{ "$schema_version": "5.3", "review_mode": "fresh", "claim_restatement": { "index_wording": "Correcting chronic cerebrospinal venous insufficiency with venoplasty improves multiple-sclerosis disability and disease activity.", "entry_form": "claim", "gradeable_restatement": "Correcting chronic cerebrospinal venous insufficiency with venoplasty improves multiple-sclerosis disability and disease activity.", "restatement_required": true, "split_into": [], "parent_claim": null, "scope_qualifiers": [ { "qualifier": "MS phenotype, disease stage, diagnostic modality/criterion, venographic anatomy, balloon/stent technique, operator setting and follow-up are stated before outcomes; no post-treatment responder restriction.", "determinable_before_outcome": true, "determined_from": "Enrollment and experimental design, before results; no responder-defined scope.", "action": "retained" } ] }, "hypothesis": { "name": "CCSVI and Liberation Therapy for Multiple Sclerosis", "central_claim": "Correcting chronic cerebrospinal venous insufficiency with venoplasty improves multiple-sclerosis disability and disease activity.", "proposed_mechanism": "Correcting chronic cerebrospinal venous insufficiency with venoplasty improves multiple-sclerosis disability and disease activity.", "claimed_scope": "Adults with diagnosed MS and prespecified CCSVI/venographic criteria, balloon venoplasty versus sham/delayed treatment and usual therapy; diagnostic specificity and procedure-related injury are separately assessed. Pediatric/CIS and rat ligation are timing/biology comparators, not a retrospectively selected responder scope.", "claimed_level": [ "maintenance", "progression" ], "is_conjunctive": true, "conjunctive_note": "Primary SC3 is the registered clinical policy/benefit claim. Etiologic mechanisms and separately stated harms are reported at their own scope; proof of harm does not itself assign the nominal benefit level." }, "rubric_routing": { "primary_rubric": "01-neurodegeneration.md", "secondary_rubrics": [ "05-immunology-inflammation.md" ], "index_notes_applied": [ "Primary SC3 is the registered clinical policy/benefit claim. Etiologic mechanisms and separately stated harms are reported at their own scope; proof of harm does not itself assign the nominal benefit level." ], "rubric_fit_note": "MS is an inflammatory demyelinating disease, not a canonical protein-aggregation tauopathy. Rubric01 is used for disease progression and clinical intervention response; rubric05 supplies immune context. Literal genetic/mediator criteria are preserved as quoted criteria, while a direct human vascular intervention and objective mechanical injury require the explicit per-subclaim adaptations below. A positive MRI finding is not clinical disability efficacy; proven local procedural injury does not prove MS causation." }, "subclaim_matrix": { "subclaims": [ { "id": "SC1", "statement": "CCSVI is a reproducible and MS-specific venous abnormality.", "subclaim_type": "existence", "scope": "Doppler, venography and blinded diagnostic criteria distinguished", "claimed_scope": "Doppler, venography and blinded diagnostic criteria distinguished", "governing_rubric": "01-neurodegeneration.md", "key_evidence_anchor": "Blinded controls and cross-method reproducibility", "hsef_level": "Α", "confidence": "Moderate", "governing_cap_or_threshold": "Quoted boundary and upward audit below.", "rationale": "Initial associations reach at most Β, and the literal specificity/reproducibility claim is downgraded once to Α because blinded multicenter and sibling-controlled originals show common narrowing without MS specificity and unstable/operator-dependent composite diagnosis. Positive M-mode and trained-reader originals are retained; the result is about the universal composite, not the existence of real venous lesions.", "rubric_adaptation": "Reproducible blinded vascular assessment and MS/sibling/healthy disease specificity substitute for neuropathological exposure association. This diagnostic subclaim is not itself a disease-causal perturbation; trained reader agreement does not satisfy an endogenous mediator criterion." }, { "id": "SC2", "statement": "Extracranial venous obstruction causally drives MS inflammation and progression.", "subclaim_type": "mechanism", "scope": "MS phenotype, stage and vascular exposure specified before outcomes", "claimed_scope": "MS phenotype, stage and vascular exposure specified before outcomes", "governing_rubric": "01-neurodegeneration.md", "key_evidence_anchor": "Temporal and mechanistic perturbations versus reverse disease effects", "hsef_level": "Β", "confidence": "Moderate", "governing_cap_or_threshold": "Quoted boundary and upward audit below.", "rationale": "Iron/gliosis after rat ligation and human CSF/perfusion associations support a mechanistic starting ceiling Γ. Early MS/CIS without confirmed CCSVI and ligation without inflammatory demyelination challenge the necessary/sufficient initiating chain: one scoped causal-pattern downgrade gives Β. Artificial exposure, limited timing and detection prevent a universal statement that vascular biology cannot affect MS.", "rubric_adaptation": "Disease-relevant human temporal dependency, or experimentally imposed venous obstruction yielding inflammatory demyelination and progression with matched controls, would support a causal vascular contribution. Rodent iron/gliosis alone is a proxy; no selective human initiation experiment is asserted." }, { "id": "SC3", "statement": "Venoplasty correcting CCSVI improves MS disability and disease activity.", "subclaim_type": "generalization", "scope": "Sham-controlled eligible MS cases; target engagement measured without responder-only scope", "claimed_scope": "Sham-controlled eligible MS cases; target engagement measured without responder-only scope", "governing_rubric": "01-neurodegeneration.md", "key_evidence_anchor": "Clinical primary endpoints, independent trials, technical success and longitudinal MRI separated", "hsef_level": "Β", "confidence": "Moderate", "governing_cap_or_threshold": "Quoted boundary and upward audit below.", "rationale": "Flow/pressure responses and the positive expanded Brave Dreams MRI finding justify considering Γ. The same trial did not show clinical functional benefit, and independent Canadian/PREMiSe sham comparisons failed to confirm the uncontrolled subjective response. One parsimonious-alternative falsification downgrade (expectation/regression and nonspecific response observed in sham) yields Β for clinical benefit. Incomplete target engagement means a complete mechanism-blocking falsification is not claimed; the positive MRI finding remains a research lead.", "rubric_adaptation": "For the registered clinical claim, sham-controlled human balloon venoplasty with verified sustained flow correction and a clinically meaningful disability/relapse endpoint is the field-valid therapeutic equivalent explicitly allowed in the rubric upper-ladder section. Randomization alone does not qualify a null as positive causal support; incomplete flow correction limits inference to an ideal fully engaged mechanism." }, { "id": "SC4", "statement": "CCSVI endovascular treatment can cause clinically important procedural complications.", "subclaim_type": "mechanism", "scope": "Balloon versus stent, technique, operator, medications and follow-up distinguished", "claimed_scope": "Balloon versus stent, technique, operator, medications and follow-up distinguished", "governing_rubric": "01-neurodegeneration.md", "key_evidence_anchor": "Documented mechanical complications and controlled safety evidence; events after treatment not automatically caused by it", "hsef_level": "Ε", "confidence": "Moderate", "governing_cap_or_threshold": "Quoted boundary and upward audit below.", "rationale": "Objective local thrombosis after balloon treatment, thrombosed/migrated stents and procedural vessel/device injury demonstrate that this intervention can cause harm in defined clinical settings. Ε preserves mapped technique/operator and serious-event boundaries; uncontrolled delayed systemic events and selected referrals cannot supply a universal causal incidence. Clinical balloon-only RCTs reported few local complications and no procedure-related serious adverse events.", "rubric_adaptation": "The criterion is adapted to objective native human procedure-related vascular injury, such as new local jugular thrombosis, vessel rupture/dissection, stent migration or device retrieval, with anatomy and temporal/mechanical linkage. It is not the literal MS disease-onset perturbation criterion. Ε reflects demonstrated injury in bounded balloon/stent and operator contexts, with lower serious-event occurrence in supervised balloon-only trials; no universal frequency, fatality or MS-exacerbation claim." } ], "aggregation_rule": "primary-subclaim", "aggregation_preregistered": true, "aggregation_rationale": "Primary SC3 is the registered clinical policy/benefit claim. Etiologic mechanisms and separately stated harms are reported at their own scope; proof of harm does not itself assign the nominal benefit level.", "primary_subclaim_id": "SC3", "aggregation_derivation": "Preregistered primary-SC3 aggregation returns Β: meaningful flow/MRI evidence is retained, but clinical benefit is not demonstrated and sham improvement supplies a more parsimonious explanation for uncontrolled subjective response. A single Step11 downgrade from the Γ mechanistic/proxy starting point is explicit. Weakest-link aggregation would return Α because SC1 universal reproducibility/specificity fails; procedural injury Ε is separate and cannot determine a benefit score.", "aggregation_alternatives": { "weakest_link_would_return": "Α", "primary_subclaim_would_return": "Β", "scope_matched_would_return": "Β", "note": "Separate narrow successes do not replace the preregistered full-scope gate." }, "index_rule_deviation": "" }, "competing_models": { "models_evaluated": [ { "rank_in_tournament": 1, "model_id": "M4", "is_nominal": false, "name": "Expectation, regression and treatment selection", "core_claim": "Uncontrolled symptom improvement can arise from nonspecific procedural response and selective treatment seeking.", "explains_what_nominal_does_not": "Uncontrolled symptom improvement can arise from nonspecific procedural response and selective treatment seeking.", "strongest_supporting_evidence": [ "Canadian sham and venoplasty arms both improved transiently while objective endpoints did not differ; later registry benefits waned." ], "strongest_contradictory_evidence": [ "These sources do not prove every subjective response is placebo or exclude a small biological MRI effect." ], "hsef_level_for_this_model": "Ε", "rationale": "Canadian sham and venoplasty arms both improved transiently while objective endpoints did not differ; later registry benefits waned. These sources do not prove every subjective response is placebo or exclude a small biological MRI effect." }, { "rank_in_tournament": 2, "model_id": "M3", "is_nominal": false, "name": "Physiological variation and operator-dependent diagnosis", "core_claim": "Normal calibre/flow variation and acquisition or interpretation differences account for many CCSVI classifications.", "explains_what_nominal_does_not": "Normal calibre/flow variation and acquisition or interpretation differences account for many CCSVI classifications.", "strongest_supporting_evidence": [ "Sibling-controlled venography shows common narrowing; trained-reader studies and spontaneous/hydration classification changes identify context dependence." ], "strongest_contradictory_evidence": [ "Real lesions and positive blinded M-mode findings remain; no exclusive artifact account explains every measurement." ], "hsef_level_for_this_model": "Ε", "rationale": "Sibling-controlled venography shows common narrowing; trained-reader studies and spontaneous/hydration classification changes identify context dependence. Real lesions and positive blinded M-mode findings remain; no exclusive artifact account explains every measurement." }, { "rank_in_tournament": 3, "model_id": "M2", "is_nominal": false, "name": "Inflammatory MS with secondary vascular changes", "core_claim": "Inflammatory demyelination can coexist with secondary or age-related vascular changes.", "explains_what_nominal_does_not": "Inflammatory demyelination can coexist with secondary or age-related vascular changes.", "strongest_supporting_evidence": [ "Early MS without detected CCSVI, duration/age relationships and rat ligation without demyelination separate vascular proxies from the MS sequence." ], "strongest_contradictory_evidence": [ "The reviewed vascular corpus does not independently prove all immunological MS causes or establish reverse causation for every vein." ], "hsef_level_for_this_model": "Β", "rationale": "Early MS without detected CCSVI, duration/age relationships and rat ligation without demyelination separate vascular proxies from the MS sequence. The reviewed vascular corpus does not independently prove all immunological MS causes or establish reverse causation for every vein." }, { "rank_in_tournament": 4, "model_id": "M1", "is_nominal": true, "name": "CCSVI is a treatable driver of MS", "core_claim": "Venous obstruction drives inflammatory pathology and its correction improves disability and activity.", "explains_what_nominal_does_not": "Venous obstruction drives inflammatory pathology and its correction improves disability and activity.", "strongest_supporting_evidence": [ "Original open-label improvements, pressure/flow responses, positive diagnostic originals and expanded Brave Dreams MRI analysis give a substantive steelman." ], "strongest_contradictory_evidence": [ "Reproducibility/specificity and clinical sham trials contradict the broad chain; ideal sustained target correction was incomplete and positive MRI lacks prospective clinical confirmation." ], "hsef_level_for_this_model": "Β", "rationale": "Original open-label improvements, pressure/flow responses, positive diagnostic originals and expanded Brave Dreams MRI analysis give a substantive steelman. Reproducibility/specificity and clinical sham trials contradict the broad chain; ideal sustained target correction was incomplete and positive MRI lacks prospective clinical confirmation." } ], "tournament_summary": "Descriptive comparison; does not modify the nominal score. The Canadian randomized sham trial (PMID 30266886) best distinguishes intervention-specific benefit from nonspecific subjective response: both arms improve transiently but clinical endpoints do not separate. It does not establish diagnostic artifact by itself; sibling-controlled venography (PMID 24119384) supplies the separate physiological-variation contrast.", "study_separating_rank1_from_rank2": "The Canadian randomized sham trial (PMID 30266886) best distinguishes intervention-specific benefit from nonspecific subjective response: both arms improve transiently but clinical endpoints do not separate. It does not establish diagnostic artifact by itself; sibling-controlled venography (PMID 24119384) supplies the separate physiological-variation contrast.", "nominal_wins_only_by_funding_artifact": false, "level_unchanged_by_tournament": true }, "evidence_inventory": [ { "n": 1, "pmid": "24975855", "title": "Prospective randomized trial of venous angioplasty in MS (PREMiSe).", "citation": "Siddiqui AH, Zivadinov R, Benedict RH et al. Prospective randomized trial of venous angioplasty in MS (PREMiSe). Neurology. 2014.", "doi": "10.1212/WNL.0000000000000638", "pmcid": "PMC4132574", "url": "https://pubmed.ncbi.nlm.nih.gov/24975855/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24975855/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "ErratumIn: PMID not supplied in the PubMed record" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PREMiSe-NCT01450072", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Strong", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "mixed", "what_it_shows": "PREMiSe phase2 randomized 19 patients to venoplasty or sham; no clinical benefit and no sustained prespecified hemodynamic success in the randomized phase. Lesion and relapse counts trended adversely without significant between-arm differences.", "what_it_does_not_show": "Small pilot, incomplete target engagement and exploratory analyses do not establish causal disease exacerbation. Linked erratum details were not supplied in PubMed and remain unchecked.", "confounders_present": [ "Small pilot, incomplete target engagement and exploratory analyses do not establish causal disease exacerbation. Linked erratum details were not supplied in PubMed and remain unchecked." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [ "Shared or possible shared parent: PREMiSe-NCT01450072" ] }, { "n": 2, "pmid": "30266886", "title": "Safety and efficacy of venoplasty in MS: A randomized, double-blind, sham-controlled phase II trial.", "citation": "Traboulsee AL, Machan L, Girard JM et al. Safety and efficacy of venoplasty in MS: A randomized, double-blind, sham-controlled phase II trial. Neurology. 2018.", "doi": "10.1212/WNL.0000000000006423", "pmcid": "PMC6207414", "url": "https://pubmed.ncbi.nlm.nih.gov/30266886/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/30266886/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID30266886", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:Methods:paragraph0, 0:Methods:paragraph4, 0:Methods:paragraph5, 0:Methods:paragraph6, 0:Methods:paragraph8, 1:Results:paragraph3, 1:Results:paragraph6, 1:Results:paragraph8, 1:Results:paragraph9, 1:Results:paragraph10. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [ "M4" ], "evidence_class": "Strong", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "contradicts", "what_it_shows": "Canadian sham-controlled trial randomized 104 participants; primary MSQOL54 change and secondary clinical/MRI outcomes did not improve with venoplasty. Both arms had transient subjective improvement. One asymptomatic jugular dissection occurred after venoplasty.", "what_it_does_not_show": "Only 60% planned power for the primary effect size and 48-week follow-up limit small/late effects. Serious adverse events occurred in 5 of 49 venoplasty and 1 of 55 sham participants; the blinded physician judged all six unrelated to the procedure, so they are not counted as procedural injury, but the arm imbalance is recorded.", "confounders_present": [ "Only 60% planned power for the primary effect size and 48-week follow-up limit small/late effects. Serious adverse events occurred in 5 of 49 venoplasty and 1 of 55 sham participants; the blinded physician judged all six unrelated to the procedure, so they are not counted as procedural injury, but the arm imbalance is recorded." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 3, "pmid": "29150995", "title": "Efficacy and Safety of Extracranial Vein Angioplasty in Multiple Sclerosis: A Randomized Clinical Trial.", "citation": "Zamboni P, Tesio L, Galimberti S et al. Efficacy and Safety of Extracranial Vein Angioplasty in Multiple Sclerosis: A Randomized Clinical Trial. JAMA neurology. 2018.", "doi": "10.1001/jamaneurol.2017.3825", "pmcid": "PMC5833494", "url": "https://pubmed.ncbi.nlm.nih.gov/29150995/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/29150995/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "BraveDreams-NCT01371760", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph2, 1:Methods:paragraph3, 1:Methods:paragraph5, 1:Methods:paragraph8, 1:Methods:paragraph11, 1:Methods:paragraph12, 1:Methods:paragraph13, 1:Methods:paragraph14, 2:Results:paragraph0, 2:Results:paragraph3, 2:Results:paragraph14, 2:Results:paragraph20, 2:Results:paragraph21. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Strong", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "mixed", "what_it_shows": "Brave Dreams randomized 115 RRMS patients; functional improvement and full-year MRI outcomes were not significantly better after angioplasty. Restored flow was observed in 38/71 treated and 14/37 sham participants; no procedure-attributed serious event occurred.", "what_it_does_not_show": "Underrecruitment and incomplete engagement constrain an ideal-flow mechanism test. Favorable late MRI comparisons lost significance after multiplicity adjustment; clinical and MRI outcomes remain distinct.", "confounders_present": [ "Underrecruitment and incomplete engagement constrain an ideal-flow mechanism test. Favorable late MRI comparisons lost significance after multiplicity adjustment; clinical and MRI outcomes remain distinct." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [ "Shared or possible shared parent: BraveDreams-NCT01371760" ] }, { "n": 4, "pmid": "31735108", "title": "Effects of Venous Angioplasty on Cerebral Lesions in Multiple Sclerosis: Expanded Analysis of the Brave Dreams Double-Blind, Sham-Controlled Randomized Trial.", "citation": "Zamboni P, Galeotti R, Salvi F et al. Effects of Venous Angioplasty on Cerebral Lesions in Multiple Sclerosis: Expanded Analysis of the Brave Dreams Double-Blind, Sham-Controlled Randomized Trial. Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists. 2020.", "doi": "10.1177/1526602819890110", "pmcid": "PMC6970429", "url": "https://pubmed.ncbi.nlm.nih.gov/31735108/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/31735108/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "ErratumIn: PMID31896294" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "BraveDreams-NCT01371760", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Materials and Methods:paragraph0, 1:Materials and Methods:paragraph12, 1:Materials and Methods:paragraph13, 1:Materials and Methods:paragraph15, 1:Materials and Methods:paragraph16, 2:Results:paragraph0, 2:Results:paragraph1, 2:Results:paragraph3, 2:Results:paragraph4. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [ "M1" ], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "supports", "what_it_shows": "Expanded Brave Dreams analysis added 15 progressive patients; treated participants were more often free of new MRI lesions, RR 1.42, 95% CI 1.00–2.01, p = 0.032. Favorable venographic anatomy showed stronger post hoc MRI associations.", "what_it_does_not_show": "Same randomized parent as 29150995, no independent clinical efficacy replication. Correction 31896294 explicitly labels classification post hoc; discordant classifications were excluded. MRI movement does not establish disability benefit.", "confounders_present": [ "Same randomized parent as 29150995, no independent clinical efficacy replication. Correction 31896294 explicitly labels classification post hoc; discordant classifications were excluded. MRI movement does not establish disability benefit." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [ "Shared or possible shared parent: BraveDreams-NCT01371760" ] }, { "n": 5, "pmid": "21839654", "title": "Venous angioplasty in patients with multiple sclerosis: results of a pilot study.", "citation": "Zamboni P, Galeotti R, Weinstock-Guttman B et al. Venous angioplasty in patients with multiple sclerosis: results of a pilot study. European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. 2012.", "doi": "10.1016/j.ejvs.2011.03.035", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21839654/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21839654/", "tier": "A", "source_tier": "A", "kind": "observational", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21839654", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Pilot immediate-versus-delayed venoplasty study of 15 RRMS patients reported functional improvement against baseline and nonsignificant relapse/MRI trends, with 27% restenosis at one year.", "what_it_does_not_show": "Small nonsham comparison and baseline contrasts cannot separate expectation, natural fluctuation and treatment effect. Abstract design is case-control despite PubMed RCT label; no complete body audit.", "confounders_present": [ "Small nonsham comparison and baseline contrasts cannot separate expectation, natural fluctuation and treatment effect. Abstract design is case-control despite PubMed RCT label; no complete body audit." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 6, "pmid": "31445091", "title": "Percutaneous Venous Angioplasty in Patients with Multiple Sclerosis and Chronic Cerebrospinal Venous Insufficiency: A Randomized Wait List Control Study.", "citation": "Napoli V, Berchiolli R, Carboncini MC et al. Percutaneous Venous Angioplasty in Patients with Multiple Sclerosis and Chronic Cerebrospinal Venous Insufficiency: A Randomized Wait List Control Study. Annals of vascular surgery. 2020.", "doi": "10.1016/j.avsg.2019.05.018", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/31445091/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/31445091/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID31445091", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "mixed", "what_it_shows": "Randomized wait-list study of 66 participants found no objective evoked-potential or upper-limb kinematic improvement, while selected composite/QOL measures favored immediate treatment.", "what_it_does_not_show": "No sham blinding; reported odds-ratio confidence interval is internally inconsistent in the abstract and is not treated as a verified quantitative effect.", "confounders_present": [ "No sham blinding; reported odds-ratio confidence interval is internally inconsistent in the abstract and is not treated as a verified quantitative effect." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 7, "pmid": "19958985", "title": "A prospective open-label study of endovascular treatment of chronic cerebrospinal venous insufficiency.", "citation": "Zamboni P, Galeotti R, Menegatti E et al. A prospective open-label study of endovascular treatment of chronic cerebrospinal venous insufficiency. Journal of vascular surgery. 2009.", "doi": "10.1016/j.jvs.2009.07.096", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/19958985/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/19958985/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "ErratumIn: PMID not supplied in the PubMed record" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "FIRST65-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [ "M1" ], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Open-label treatment of 65 MS patients lowered venous pressure and reported improved RRMS functional, relapse-free and MRI measures against baseline. Jugular patency was 53% versus 96% for the azygos vein.", "what_it_does_not_show": "Uncontrolled treatment with high restenosis and subtype differences does not establish clinical causality; presumed first-series overlap is grouped conservatively. Linked erratum details remain unavailable.", "confounders_present": [ "Uncontrolled treatment with high restenosis and subtype differences does not establish clinical causality; presumed first-series overlap is grouped conservatively. Linked erratum details remain unavailable." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: FIRST65-possible-overlap" ] }, { "n": 8, "pmid": "23354606", "title": "Endovascular treatment of CCSVI in patients with multiple sclerosis: clinical outcome of 462 cases.", "citation": "Ghezzi A, Annovazzi P, Cocco E et al. Endovascular treatment of CCSVI in patients with multiple sclerosis: clinical outcome of 462 cases. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. 2013.", "doi": "10.1007/s10072-013-1300-5", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23354606/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23354606/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "ITALIAN462", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Italian multicenter retrospective series of 462 treated patients found no significant disability improvement, relapses in 98 patients and 15 severe adverse events after treatment.", "what_it_does_not_show": "No sham comparator and heterogeneous treatment; same parent as 23380649. Events occurring after treatment are not all established consequences of the procedure.", "confounders_present": [ "No sham comparator and heterogeneous treatment; same parent as 23380649. Events occurring after treatment are not all established consequences of the procedure." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: ITALIAN462" ] }, { "n": 9, "pmid": "28270250", "title": "Patient-Reported Benefits of Extracranial Venous Therapy: British Columbia CCSVI Registry.", "citation": "Sadovnick AD, Yee IM, Attwell-Pope K et al. Patient-Reported Benefits of Extracranial Venous Therapy: British Columbia CCSVI Registry. The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques. 2017.", "doi": "10.1017/cjn.2017.27", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/28270250/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/28270250/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID28270250", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "British Columbia registry participants initially reported improvements after treatment, but these were not maintained at 24 months; self-reported complications were common enough to document a safety concern.", "what_it_does_not_show": "Selection, recall, changing therapy and lack of blinded untreated controls prevent causal benefit/risk estimates.", "confounders_present": [ "Selection, recall, changing therapy and lack of blinded untreated controls prevent causal benefit/risk estimates." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 10, "pmid": "26891024", "title": "Medical Tourism for CCSVI Procedures in People with Multiple Sclerosis: An Observational Study.", "citation": "Metz LM, Greenfield J, Marrie RA et al. Medical Tourism for CCSVI Procedures in People with Multiple Sclerosis: An Observational Study. The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques. 2016.", "doi": "10.1017/cjn.2015.350", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/26891024/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/26891024/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID26891024", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Alberta cohort found disability, disease duration and progressive course associated with seeking out-of-country CCSVI procedures, directly identifying treatment-selection differences.", "what_it_does_not_show": "A study of treatment-seeking selection does not estimate efficacy or procedural injury; it informs confounding rather than positive intervention tally.", "confounders_present": [ "A study of treatment-seeking selection does not estimate efficacy or procedural injury; it informs confounding rather than positive intervention tally." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 11, "pmid": "23301864", "title": "Endovascular treatment of chronic cerebrospinal venous insufficiency in multiple sclerosis: a retrospective study.", "citation": "Alroughani R, Lamdhade S, Thussu A. Endovascular treatment of chronic cerebrospinal venous insufficiency in multiple sclerosis: a retrospective study. The International journal of neuroscience. 2013.", "doi": "10.3109/00207454.2012.759569", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23301864/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23301864/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23301864", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Retrospective follow-up of 45 RRMS patients found worse EDSS and more active MRI after venoplasty; 35.6% stopped disease-modifying treatment.", "what_it_does_not_show": "Uncontrolled worsening, therapy discontinuation and indication confounding do not show angioplasty caused MS deterioration.", "confounders_present": [ "Uncontrolled worsening, therapy discontinuation and indication confounding do not show angioplasty caused MS deterioration." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 12, "pmid": "21876515", "title": "An endovascular treatment of Chronic Cerebro-Spinal Venous Insufficiency in multiple sclerosis patients - 6 month follow-up results.", "citation": "Kostecki J, Zaniewski M, Ziaja K et al. An endovascular treatment of Chronic Cerebro-Spinal Venous Insufficiency in multiple sclerosis patients - 6 month follow-up results. Neuro endocrinology letters. 2011.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21876515/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21876515/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21876515", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "mixed", "what_it_shows": "Small treatment cohort found no EDSS/ESS benefit, only transient QOL improvement and some fatigue/heat changes; restenosis and partial in-stent thrombosis occurred.", "what_it_does_not_show": "Unblinded outcomes and selective subjective improvement do not establish disability efficacy. Balloon and stent risks are not interchangeable.", "confounders_present": [ "Unblinded outcomes and selective subjective improvement do not establish disability efficacy. Balloon and stent risks are not interchangeable." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 13, "pmid": "22155803", "title": "Endovascular treatment of patients with chronic cerebrospinal venous insufficiency and multiple sclerosis.", "citation": "Kipshidze N, Rukhadze I, Archvadze A et al. Endovascular treatment of patients with chronic cerebrospinal venous insufficiency and multiple sclerosis. Georgian medical news. 2011.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22155803/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22155803/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22155803", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3", "SC4" ], "favors_models": [], "evidence_class": "Weak", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Four treated cases reported early symptomatic and venographic improvement with no observed adverse events.", "what_it_does_not_show": "Tiny uncontrolled case series cannot identify causal clinical benefit, durable patency or rare-event safety.", "confounders_present": [ "Tiny uncontrolled case series cannot identify causal clinical benefit, durable patency or rare-event safety." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 14, "pmid": "23660636", "title": "Percutaneous transluminal angioplasty for chronic cerebrospinal venous insufficiency in multiple sclerosis: dichotomy between subjective and objective outcome scores.", "citation": "Zagaglia S, Balestrini S, Perticaroli E et al. Percutaneous transluminal angioplasty for chronic cerebrospinal venous insufficiency in multiple sclerosis: dichotomy between subjective and objective outcome scores. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. 2013.", "doi": "10.1007/s10072-013-1450-5", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23660636/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23660636/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23660636", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Self-selected cohort of 44 patients reported improved QOL despite no relapse-rate benefit, worse EDSS and new MRI activity in some participants.", "what_it_does_not_show": "Subjective/objective discordance is informative, but uncontrolled worsening cannot be attributed solely to venoplasty.", "confounders_present": [ "Subjective/objective discordance is informative, but uncontrolled worsening cannot be attributed solely to venoplasty." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 15, "pmid": "24531803", "title": "Venous Hemodynamic Insufficiency Severity Score variation after endovascular treatment of chronic cerebrospinal venous insufficiency.", "citation": "Scalise F, Novelli E, Farina M et al. Venous Hemodynamic Insufficiency Severity Score variation after endovascular treatment of chronic cerebrospinal venous insufficiency. Phlebology. 2015.", "doi": "10.1177/0268355514524193", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24531803/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24531803/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24531803", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC3" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "mixed", "what_it_shows": "Follow-up of 45 treated patients found lower venous hemodynamic severity and modest baseline EDSS improvement; EDSS change did not differ between flow-responder groups.", "what_it_does_not_show": "Post-treatment median-defined responders are not a prespecified causal subgroup; no sham comparator and p.746 responder contrast cannot validate mechanism mediation.", "confounders_present": [ "Post-treatment median-defined responders are not a prespecified causal subgroup; no sham comparator and p.746 responder contrast cannot validate mechanism mediation." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 16, "pmid": "21679067", "title": "Safety profile of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis.", "citation": "Petrov I, Grozdinski L, Kaninski G et al. Safety profile of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis. Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists. 2011.", "doi": "10.1583/11-3440.1", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21679067/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21679067/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21679067", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Series of 495 procedures in 461 MS patients documented venous rupture, dissection and eight stent or treated-segment thromboses, alongside no short-term death or major bleeding.", "what_it_does_not_show": "Rates are procedure-denominated and setting-specific, mixing stents and balloons. Direct vascular injury supports possible procedural harm but not universal fatality.", "confounders_present": [ "Rates are procedure-denominated and setting-specific, mixing stents and balloons. Direct vascular injury supports possible procedural harm but not universal fatality." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 17, "pmid": "22088659", "title": "Safety of endovascular treatment of chronic cerebrospinal venous insufficiency: a report of 240 patients with multiple sclerosis.", "citation": "Mandato KD, Hegener PF, Siskin GP et al. Safety of endovascular treatment of chronic cerebrospinal venous insufficiency: a report of 240 patients with multiple sclerosis. Journal of vascular and interventional radiology : JVIR. 2012.", "doi": "10.1016/j.jvir.2011.09.019", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22088659/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22088659/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22088659", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Thirty-day series of 257 procedures in 240 patients documented venous thromboses, prolonged arrhythmias and two hospitalizations, including stress cardiomyopathy during retreatment.", "what_it_does_not_show": "Short follow-up and mixed techniques limit general incidence; reported temporal arrhythmia does not by itself prove every systemic event is catheter-caused.", "confounders_present": [ "Short follow-up and mixed techniques limit general incidence; reported temporal arrhythmia does not by itself prove every systemic event is catheter-caused." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 18, "pmid": "23948669", "title": "Feasibility and safety of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis.", "citation": "Lupattelli T, Bellagamba G, Righi E et al. Feasibility and safety of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis. Journal of vascular surgery. 2013.", "doi": "10.1016/j.jvs.2013.05.108", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23948669/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23948669/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23948669", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Large procedural series recorded rupture requiring transfusion, groin bleeding requiring surgery, balloon-fragment retrieval and jugular thrombosis; complications clustered during earlier operator experience.", "what_it_does_not_show": "Abstract has inconsistent patient denominators, so its exact incidence is not treated as verified. Mostly balloon treatment without jugular stenting maps a technique and learning-context boundary.", "confounders_present": [ "Abstract has inconsistent patient denominators, so its exact incidence is not treated as verified. Mostly balloon treatment without jugular stenting maps a technique and learning-context boundary." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 19, "pmid": "23701076", "title": "Endovascular diagnosis and management of chronic cerebrospinal venous insufficiency: retrospective analysis of 30-day morbidity and mortality in 95 consecutive patients.", "citation": "Ferra H, Behrens G, Tumer Y et al. Endovascular diagnosis and management of chronic cerebrospinal venous insufficiency: retrospective analysis of 30-day morbidity and mortality in 95 consecutive patients. AJR. American journal of roentgenology. 2013.", "doi": "10.2214/AJR.12.8938", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23701076/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23701076/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "ErratumIn: PMID not supplied in the PubMed record" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23701076", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Series of 107 procedures in 95 patients reported high technical success and three jugular thromboses, with no deaths within 30 days.", "what_it_does_not_show": "Technical dilation success is not MS efficacy; short-term surveillance cannot exclude late injury. Linked correction concerns author spelling in the indexed notice.", "confounders_present": [ "Technical dilation success is not MS efficacy; short-term surveillance cannot exclude late injury. Linked correction concerns author spelling in the indexed notice." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 20, "pmid": "23380649", "title": "Adverse events after endovascular treatment of chronic cerebro-spinal venous insufficiency (CCSVI) in patients with multiple sclerosis.", "citation": "Ghezzi A, Annovazzi P, Amato MP et al. Adverse events after endovascular treatment of chronic cerebro-spinal venous insufficiency (CCSVI) in patients with multiple sclerosis. Multiple sclerosis (Houndmills, Basingstoke, England). 2013.", "doi": "10.1177/1352458513475491", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23380649/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23380649/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "ErratumIn: PMID28072565" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "ITALIAN462", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Italian series reported 15 serious events among 462 treated patients at variable intervals, including seven jugular thromboses and a myocardial-infarction death ten weeks later.", "what_it_does_not_show": "Same parent as 23354606. Temporal events including pneumonia or myocardial infarction are not all causally attributed; correction 28072565 was linked but blocked to body access, so corrected numerical details remain unverified.", "confounders_present": [ "Same parent as 23354606. Temporal events including pneumonia or myocardial infarction are not all causally attributed; correction 28072565 was linked but blocked to body access, so corrected numerical details remain unverified." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: ITALIAN462" ] }, { "n": 21, "pmid": "21803799", "title": "Internal jugular thrombosis post venoplasty for chronic cerebrospinal venous insufficiency.", "citation": "Imperial College CCSVI Investigation Group, Thapar A, Lane TR et al. Internal jugular thrombosis post venoplasty for chronic cerebrospinal venous insufficiency. Phlebology. 2011.", "doi": "10.1258/phleb.2011.011052", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21803799/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21803799/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21803799", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "supports", "what_it_shows": "A patient developed jugular thrombosis after balloon venoplasty without a stent despite anticoagulation, requiring surgical thrombectomy.", "what_it_does_not_show": "Objective local mechanical complication supports a can-cause claim, not the frequency of injury or a causal MS-worsening estimate.", "confounders_present": [ "Objective local mechanical complication supports a can-cause claim, not the frequency of injury or a causal MS-worsening estimate." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 22, "pmid": "21107001", "title": "Endovascular treatment for chronic cerebrospinal venous insufficiency: is the procedure safe?", "citation": "Ludyga T, Kazibudzki M, Simka M et al. Endovascular treatment for chronic cerebrospinal venous insufficiency: is the procedure safe? Phlebology. 2010.", "doi": "10.1258/phleb.2010.010053", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21107001/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21107001/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21107001", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": true, "endogenous": true, "direction": "supports", "what_it_shows": "Procedural series documented two thrombotic stent occlusions and surgical femoral venotomy to retrieve an angioplasty balloon.", "what_it_does_not_show": "Mixed balloon/stent exposure and short observation do not yield one universal liberation-therapy risk; mechanical failures can be causally linked within their settings.", "confounders_present": [ "Mixed balloon/stent exposure and short observation do not yield one universal liberation-therapy risk; mechanical failures can be causally linked within their settings." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 23, "pmid": "21856578", "title": "Complications in MS patients after CCSVI procedures abroad (Calgary, AB).", "citation": "Burton JM, Alikhani K, Goyal M et al. Complications in MS patients after CCSVI procedures abroad (Calgary, AB). The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques. 2011.", "doi": "10.1017/s0317167100054123", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21856578/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21856578/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21856578", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Five referred patients after treatment abroad had complications including stent thrombosis, migration and catheter-related injury.", "what_it_does_not_show": "Referral selection lacks a treated-population denominator; establishes examples of injury, not incidence across all providers.", "confounders_present": [ "Referral selection lacks a treated-population denominator; establishes examples of injury, not incidence across all providers." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 24, "pmid": "23249660", "title": "Serious complication of percutaneous angioplasty with stent implantation in so called \"chronic cerebrospinal venous insufficiency\" in multiple sclerosis patient.", "citation": "Doležal O, Horáková D, Gdovinová Z et al. Serious complication of percutaneous angioplasty with stent implantation in so called \"chronic cerebrospinal venous insufficiency\" in multiple sclerosis patient. Prague medical report. 2012.", "doi": "10.14712/23362936.2015.12", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23249660/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23249660/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23249660", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Case report documents stent displacement and thrombosis by imaging after repeated venous stenting, with subsequent worsening of disability.", "what_it_does_not_show": "The paper discusses potential fatal embolism, not an observed fatal pulmonary embolus; disability deterioration has additional possible causes.", "confounders_present": [ "The paper discusses potential fatal embolism, not an observed fatal pulmonary embolus; disability deterioration has additional possible causes." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 25, "pmid": "23809937", "title": "Spiral vein graft for internal jugular bypass in a patient with multiple sclerosis and suspected chronic cerebrospinal venous insufficiency.", "citation": "Fankhauser GT, Stone WM, Fu R et al. Spiral vein graft for internal jugular bypass in a patient with multiple sclerosis and suspected chronic cerebrospinal venous insufficiency. Annals of vascular surgery. 2013.", "doi": "10.1016/j.avsg.2012.05.033", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23809937/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23809937/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23809937", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC4" ], "favors_models": [], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "supports", "what_it_shows": "Case report describes jugular stent thrombosis despite antithrombotic therapy, failed repeat intervention and later bypass graft occlusion.", "what_it_does_not_show": "Specific device failure is observable; subjective symptom response does not establish MS disease modification or a general complication rate.", "confounders_present": [ "Specific device failure is observable; subjective symptom response does not establish MS disease modification or a general complication rate." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 26, "pmid": "19060024", "title": "Chronic cerebrospinal venous insufficiency in patients with multiple sclerosis.", "citation": "Zamboni P, Galeotti R, Menegatti E et al. Chronic cerebrospinal venous insufficiency in patients with multiple sclerosis. Journal of neurology, neurosurgery, and psychiatry. 2009.", "doi": "10.1136/jnnp.2008.157164", "pmcid": "PMC2647682", "url": "https://pubmed.ncbi.nlm.nih.gov/19060024/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/19060024/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "FIRST65-possible-overlap", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:METHODS:paragraph0, 0:METHODS:paragraph3, 0:METHODS:paragraph4, 0:METHODS:paragraph6, 0:METHODS:paragraph9, 0:METHODS:paragraph22, 0:METHODS:paragraph23, 0:METHODS:paragraph24, 1:SELECTIVE VENOGRAPHY:paragraph0. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": true, "endogenous": false, "direction": "supports", "what_it_shows": "Foundational study found abnormal Doppler patterns in all 65 MS patients and none of selected controls, with venographic stenoses in screen-positive patients.", "what_it_does_not_show": "Ultrasound was blinded, but invasive venography knew diagnosis and used ultrasound-positive selection plus controls undergoing venography for other illnesses; this is association, not temporal or causal proof.", "confounders_present": [ "Ultrasound was blinded, but invasive venography knew diagnosis and used ultrasound-positive selection plus controls undergoing venography for other illnesses; this is association, not temporal or causal proof." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [ "Shared or possible shared parent: FIRST65-possible-overlap" ] }, { "n": 27, "pmid": "20018140", "title": "The severity of chronic cerebrospinal venous insufficiency in patients with multiple sclerosis is related to altered cerebrospinal fluid dynamics.", "citation": "Zamboni P, Menegatti E, Weinstock-Guttman B et al. The severity of chronic cerebrospinal venous insufficiency in patients with multiple sclerosis is related to altered cerebrospinal fluid dynamics. Functional neurology. 2009.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20018140/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20018140/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "RRMS16-HC8-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Small 16-RRMS/8-control study associated venous severity with lower CSF flow.", "what_it_does_not_show": "Cross-sectional physiology does not establish onset or treatment dependency; likely shared sample with 20351672, not independent mechanistic replication.", "confounders_present": [ "Cross-sectional physiology does not establish onset or treatment dependency; likely shared sample with 20351672, not independent mechanistic replication." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: RRMS16-HC8-possible-overlap" ] }, { "n": 28, "pmid": "20351674", "title": "Hemodynamic patterns of chronic cerebrospinal venous insufficiency in multiple sclerosis. Correlation with symptoms at onset and clinical course.", "citation": "Bartolomei I, Salvi F, Galeotti R et al. Hemodynamic patterns of chronic cerebrospinal venous insufficiency in multiple sclerosis. Correlation with symptoms at onset and clinical course. International angiology : a journal of the International Union of Angiology. 2010.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20351674/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20351674/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "FIRST65-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Venographic patterns in 65 CCSVI-positive MS patients were related to disease onset and course categories.", "what_it_does_not_show": "Selected cases without a comparable healthy denominator cannot show MS specificity or prospective temporal order; conservatively grouped with first 65-patient series.", "confounders_present": [ "Selected cases without a comparable healthy denominator cannot show MS specificity or prospective temporal order; conservatively grouped with first 65-patient series." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: FIRST65-possible-overlap" ] }, { "n": 29, "pmid": "21490322", "title": "Prevalence, sensitivity, and specificity of chronic cerebrospinal venous insufficiency in MS.", "citation": "Zivadinov R, Marr K, Cutter G et al. Prevalence, sensitivity, and specificity of chronic cerebrospinal venous insufficiency in MS. Neurology. 2011.", "doi": "10.1212/WNL.0b013e318212a901", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21490322/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21490322/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CTEVD-RESOURCE-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "CTEVD found CCSVI more frequently in MS than healthy controls, but substantial control positivity and higher progressive-course frequency.", "what_it_does_not_show": "Partial association with poor specificity does not establish primary causation; clinical subset and related imaging reports share recruitment resources.", "confounders_present": [ "Partial association with poor specificity does not establish primary causation; clinical subset and related imaging reports share recruitment resources." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CTEVD-RESOURCE-possible-overlap" ] }, { "n": 30, "pmid": "24014572", "title": "Observational case-control study of the prevalence of chronic cerebrospinal venous insufficiency in multiple sclerosis: results from the CoSMo study.", "citation": "Comi G, Battaglia MA, Bertolotto A et al. Observational case-control study of the prevalence of chronic cerebrospinal venous insufficiency in multiple sclerosis: results from the CoSMo study. Multiple sclerosis (Houndmills, Basingstoke, England). 2013.", "doi": "10.1177/1352458513501231", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24014572/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24014572/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24014572", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Strong", "system": "human observational", "decisive_perturbation": true, "endogenous": false, "direction": "contradicts", "what_it_shows": "CoSMo multicenter blinded local/central reading found similar low CCSVI prevalence in MS, other neurodegenerative diseases and healthy controls, with low positive agreement.", "what_it_does_not_show": "Diagnostic negative result concerns specified criteria and adjudication, not every vascular abnormality. Rare positives and operator disagreement bound sensitivity claims.", "confounders_present": [ "Diagnostic negative result concerns specified criteria and adjudication, not every vascular abnormality. Rare positives and operator disagreement bound sensitivity claims." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 31, "pmid": "23370468", "title": "Mystery of chronic cerebrospinal venous insufficiency: identical venographic and ultrasound findings in patients with MS and controls.", "citation": "McAuliffe W, Kermode AG. Mystery of chronic cerebrospinal venous insufficiency: identical venographic and ultrasound findings in patients with MS and controls. AJNR. American journal of neuroradiology. 2013.", "doi": "10.3174/ajnr.A3390", "pmcid": "PMC8051509", "url": "https://pubmed.ncbi.nlm.nih.gov/23370468/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23370468/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23370468", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "MS and controls showed similar ultrasound/venographic features; most venographed controls had at least 50% narrowing.", "what_it_does_not_show": "Controls had other indications for venography and the MS cohort was small; common narrowing challenges specificity but does not by itself establish general-population prevalence.", "confounders_present": [ "Controls had other indications for venography and the MS cohort was small; common narrowing challenges specificity but does not by itself establish general-population prevalence." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 32, "pmid": "23828872", "title": "Chronic cerebrospinal venous insufficiency: masked multimodal imaging assessment.", "citation": "Brod SA, Kramer LA, Cohen AM et al. Chronic cerebrospinal venous insufficiency: masked multimodal imaging assessment. Multiple sclerosis (Houndmills, Basingstoke, England). 2013.", "doi": "10.1177/1352458513494493", "pmcid": "PMC3783583", "url": "https://pubmed.ncbi.nlm.nih.gov/23828872/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23828872/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "HOUSTON276", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Subjects and methods:paragraph4, 1:Subjects and methods:paragraph5, 2:Results:paragraph4. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Masked multimodal Houston study found discordant ultrasound/MRV findings and no clinically meaningful venographic pressure gradients in the examined subset.", "what_it_does_not_show": "Same parent as 23418024; selective invasive subset and supine pressure measurements limit broader physiology. Anatomical narrowing alone is not functionally important obstruction.", "confounders_present": [ "Same parent as 23418024; selective invasive subset and supine pressure measurements limit broader physiology. Anatomical narrowing alone is not functionally important obstruction." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: HOUSTON276" ] }, { "n": 33, "pmid": "23418024", "title": "Chronic cerebrospinal venous insufficiency: case-control neurosonography results.", "citation": "Barreto AD, Brod SA, Bui TT et al. Chronic cerebrospinal venous insufficiency: case-control neurosonography results. Annals of neurology. 2013.", "doi": "10.1002/ana.23839", "pmcid": "PMC3657573", "url": "https://pubmed.ncbi.nlm.nih.gov/23418024/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23418024/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "HOUSTON276", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:Subjects and Methods:paragraph0, 0:Subjects and Methods:paragraph6, 1:Results:paragraph3, 1:Results:paragraph8, 1:Results:paragraph9. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded Houston assessment of 206 MS and 70 non-MS subjects found no excess CCSVI or venous-velocity abnormality in MS.", "what_it_does_not_show": "Single-center recruitment and fixed criteria restrict generalization; companion multimodal report is the same study unit.", "confounders_present": [ "Single-center recruitment and fixed criteria restrict generalization; companion multimodal report is the same study unit." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: HOUSTON276" ] }, { "n": 34, "pmid": "23920002", "title": "Doppler ultrasound examination of multiple sclerosis patients and control participants: inter-observer agreement and association with disease.", "citation": "Laukontaus SJ, Kagayama T, Lepäntalo M et al. Doppler ultrasound examination of multiple sclerosis patients and control participants: inter-observer agreement and association with disease. European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. 2013.", "doi": "10.1016/j.ejvs.2013.07.003", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23920002/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23920002/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23920002", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Blinded Finnish study found poor observer agreement and small jugular calibre more often in longstanding MS than controls, with weaker differences in recent MS.", "what_it_does_not_show": "Cross-sectional duration differences permit secondary change or ageing; calibre association is not MS-specific flow causality.", "confounders_present": [ "Cross-sectional duration differences permit secondary change or ageing; calibre association is not MS-specific flow causality." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 35, "pmid": "23384545", "title": "Chronic cerebrospinal venous insufficiency in multiple sclerosis: a sonographer-blinded case-control study.", "citation": "Imperiale D, Melis F, Giaccone C et al. Chronic cerebrospinal venous insufficiency in multiple sclerosis: a sonographer-blinded case-control study. Clinical neurology and neurosurgery. 2013.", "doi": "10.1016/j.clineuro.2013.01.003", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/23384545/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23384545/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23384545", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Blinded study found no significant CCSVI case-control association while particular stenosis findings were more frequent in MS.", "what_it_does_not_show": "Retains a positive anatomical result, but selective criterion differences and multiplicity do not validate the composite or causal mechanism.", "confounders_present": [ "Retains a positive anatomical result, but selective criterion differences and multiplicity do not validate the composite or causal mechanism." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 36, "pmid": "23418501", "title": "Chronic cerebrospinal venous insufficiency is not associated with multiple sclerosis and its severity: a blind-verified study.", "citation": "Leone MA, Raymkulova O, Naldi P et al. Chronic cerebrospinal venous insufficiency is not associated with multiple sclerosis and its severity: a blind-verified study. PloS one. 2013.", "doi": "10.1371/journal.pone.0056031", "pmcid": "PMC3572163", "url": "https://pubmed.ncbi.nlm.nih.gov/23418501/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23418501/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23418501", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph0, 1:Methods:paragraph2, 1:Methods:paragraph10, 1:Methods:paragraph11, 2:Results:paragraph3, 2:Results:paragraph8, 2:Results:paragraph9. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": true, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blind-verified study found CCSVI in 30.9% of MS patients and 33.8% of controls; experienced, specifically trained operators showed variable estimates.", "what_it_does_not_show": "Blinding was successful in cases but imperfect in controls; single-study null does not show no vascular pathology, while training alone does not restore MS specificity.", "confounders_present": [ "Blinding was successful in cases but imperfect in controls; single-study null does not show no vascular pathology, while training alone does not restore MS specificity." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 37, "pmid": "22513520", "title": "No association between chronic cerebrospinal venous insufficiency and pediatric-onset multiple sclerosis.", "citation": "Amato MP, Saia V, Hakiki B et al. No association between chronic cerebrospinal venous insufficiency and pediatric-onset multiple sclerosis. Multiple sclerosis (Houndmills, Basingstoke, England). 2012.", "doi": "10.1177/1352458512445943", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22513520/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22513520/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22513520", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded pediatric-onset MS study found no significant excess of CCSVI over controls.", "what_it_does_not_show": "Small early-onset sample limits precision; nevertheless early disease can occur without detected composite abnormalities.", "confounders_present": [ "Small early-onset sample limits precision; nevertheless early disease can occur without detected composite abnormalities." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 38, "pmid": "24411179", "title": "MR venography in children and adolescents with multiple sclerosis does not show increased prevalence of extracranial veins anomalies.", "citation": "Jurkiewicz E, Kotulska K, Nowak K et al. MR venography in children and adolescents with multiple sclerosis does not show increased prevalence of extracranial veins anomalies. European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society. 2014.", "doi": "10.1016/j.ejpn.2013.11.013", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24411179/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24411179/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24411179", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Pediatric MR venography found venous anomalies at least as common in controls as childhood MS.", "what_it_does_not_show": "Modest sample and imaging modality limit exclusion of subtle physiology; no proof of a necessary initiating venous lesion.", "confounders_present": [ "Modest sample and imaging modality limit exclusion of subtle physiology; no proof of a necessary initiating venous lesion." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 39, "pmid": "21849656", "title": "Progressive multiple sclerosis is not associated with chronic cerebrospinal venous insufficiency.", "citation": "Baracchini C, Perini P, Causin F et al. Progressive multiple sclerosis is not associated with chronic cerebrospinal venous insufficiency. Neurology. 2011.", "doi": "10.1212/WNL.0b013e31822c6208", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21849656/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21849656/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21849656", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Progressive MS case-control study found very few Doppler-positive cases and no relationship with disability; only one selected venographic participant had bilateral stenosis.", "what_it_does_not_show": "Selective invasive confirmation and small positives limit sensitivity; absence of a detected abnormality is not exclusion of every vascular contribution.", "confounders_present": [ "Selective invasive confirmation and small positives limit sensitivity; absence of a detected abnormality is not exclusion of every vascular contribution." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 40, "pmid": "22961213", "title": "Chronic cerebrospinal venous insufficiency is not more prevalent in patients with mild multiple sclerosis: a sonographer-blinded, case-control ultrasound study.", "citation": "Chambers B, Chambers J, Cameron H et al. Chronic cerebrospinal venous insufficiency is not more prevalent in patients with mild multiple sclerosis: a sonographer-blinded, case-control ultrasound study. Multiple sclerosis (Houndmills, Basingstoke, England). 2013.", "doi": "10.1177/1352458512459986", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22961213/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22961213/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "MILD-CIS-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded study of mild MS/CIS matched pairs found the CCSVI composite in only one control; anatomical jugular differences depended on stenosis definition.", "what_it_does_not_show": "Definition sensitivity and low-disability selection constrain general scope; grouped conservatively with related mild/CIS flow study 24065289.", "confounders_present": [ "Definition sensitivity and low-disability selection constrain general scope; grouped conservatively with related mild/CIS flow study 24065289." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: MILD-CIS-possible-overlap" ] }, { "n": 41, "pmid": "24243930", "title": "Prevalence of chronic cerebrospinal venous insufficiency in multiple sclerosis: a blinded sonographic evaluation.", "citation": "Tromba L, Blasi S, Vestri A et al. Prevalence of chronic cerebrospinal venous insufficiency in multiple sclerosis: a blinded sonographic evaluation. Phlebology. 2015.", "doi": "10.1177/0268355513512823", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24243930/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24243930/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24243930", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [ "M1" ], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": true, "endogenous": false, "direction": "supports", "what_it_shows": "Blinded M-mode-enhanced Doppler study found CCSVI in 59.8% of 112 MS patients and none of 67 controls.", "what_it_does_not_show": "Important positive original remains contrary to other blinded studies; modality/protocol dependence and no prospective causal manipulation block universal specificity.", "confounders_present": [ "Important positive original remains contrary to other blinded studies; modality/protocol dependence and no prospective causal manipulation block universal specificity." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 42, "pmid": "24890104", "title": "Validity of the diagnostic criteria for chronic cerebrospinal venous insufficiency and association with multiple sclerosis.", "citation": "Costello F, Modi J, Lautner D et al. Validity of the diagnostic criteria for chronic cerebrospinal venous insufficiency and association with multiple sclerosis. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne. 2014.", "doi": "10.1503/cmaj.131431", "pmcid": "PMC4119167", "url": "https://pubmed.ncbi.nlm.nih.gov/24890104/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24890104/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24890104", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded ultrasound/MRV assessment found no significant composite CCSVI or patency difference between MS and controls.", "what_it_does_not_show": "Composite criteria and modalities differed; a nonsignificant two-criterion frequency contrast is not proof of exact equivalence.", "confounders_present": [ "Composite criteria and modalities differed; a nonsignificant two-criterion frequency contrast is not proof of exact equivalence." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 43, "pmid": "27384420", "title": "Extracranial Venous Drainage Pattern in Multiple Sclerosis and Healthy Controls: Application of the 2011 Diagnostic Criteria for Chronic Cerebrospinal Venous Insufficiency.", "citation": "Cardaioli G, Di Filippo M, Bianchi A et al. Extracranial Venous Drainage Pattern in Multiple Sclerosis and Healthy Controls: Application of the 2011 Diagnostic Criteria for Chronic Cerebrospinal Venous Insufficiency. European neurology. 2016.", "doi": "10.1159/000445540", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/27384420/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/27384420/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID27384420", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded revised-criteria Doppler study found no significant MS/control frequency difference.", "what_it_does_not_show": "Small sample and alternative criteria limit sensitivity and equivalence inference.", "confounders_present": [ "Small sample and alternative criteria limit sensitivity and equivalence inference." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 44, "pmid": "21280079", "title": "No evidence of chronic cerebrospinal venous insufficiency at multiple sclerosis onset.", "citation": "Baracchini C, Perini P, Calabrese M et al. No evidence of chronic cerebrospinal venous insufficiency at multiple sclerosis onset. Annals of neurology. 2011.", "doi": "10.1002/ana.22228", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21280079/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21280079/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21280079", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "CIS study found some ultrasound positives but no venographic abnormalities in the seven positive patients who underwent confirmation.", "what_it_does_not_show": "Verification restricted to screen positives and small numbers; challenges necessity at early disease, not all possible venous physiology.", "confounders_present": [ "Verification restricted to screen positives and small numbers; challenges necessity at early disease, not all possible venous physiology." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 45, "pmid": "21786298", "title": "Proposed chronic cerebrospinal venous insufficiency criteria do not predict multiple sclerosis risk or severity.", "citation": "Centonze D, Floris R, Stefanini M et al. Proposed chronic cerebrospinal venous insufficiency criteria do not predict multiple sclerosis risk or severity. Annals of neurology. 2011.", "doi": "10.1002/ana.22436", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21786298/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/21786298/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21786298", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "MS/healthy-control study found no significant CCSVI frequency difference or association with disability, course or progression.", "what_it_does_not_show": "Modest cross-sectional sample cannot prove exact equivalence or establish a direction of causality.", "confounders_present": [ "Modest cross-sectional sample cannot prove exact equivalence or establish a direction of causality." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 46, "pmid": "22870210", "title": "Multiple sclerosis and CCSVI: a population-based case control study.", "citation": "Patti F, Nicoletti A, Leone C et al. Multiple sclerosis and CCSVI: a population-based case control study. PloS one. 2012.", "doi": "10.1371/journal.pone.0041227", "pmcid": "PMC3411668", "url": "https://pubmed.ncbi.nlm.nih.gov/22870210/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22870210/", "tier": "A", "source_tier": "A", "kind": "observational", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22870210", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Sicilian population case-control study found higher CCSVI frequency in MS, particularly progressive and longer-duration disease; CIS was not significantly different.", "what_it_does_not_show": "Observational case-control design, despite RCT metadata label. Duration and progression associations permit consequence/ageing and do not establish temporal initiation.", "confounders_present": [ "Observational case-control design, despite RCT metadata label. Duration and progression associations permit consequence/ageing and do not establish temporal initiation." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 47, "pmid": "24260106", "title": "The fluctuating natural course of CCSVI in MS patients and controls, a prospective follow-up.", "citation": "Van den Berg PJ, Visser LH. The fluctuating natural course of CCSVI in MS patients and controls, a prospective follow-up. PloS one. 2013.", "doi": "10.1371/journal.pone.0078166", "pmcid": "PMC3833990", "url": "https://pubmed.ncbi.nlm.nih.gov/24260106/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24260106/", "tier": "A", "source_tier": "A", "kind": "observational", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24260106", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Prospective repeat assessment found some baseline CCSVI positives becoming negative and new positives without intervention.", "what_it_does_not_show": "Fluctuating detection challenges a fixed diagnostic target; follow-up observational study is not a randomized treatment trial despite indexing.", "confounders_present": [ "Fluctuating detection challenges a fixed diagnostic target; follow-up observational study is not a randomized treatment trial despite indexing." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 48, "pmid": "28721810", "title": "Centralized and Local Color Doppler Ultrasound Reading Agreement for Diagnosis of the Chronic Cerebrospinal Venous Insufficiency in Patients with Multiple Sclerosis.", "citation": "Caprio MG, Marr K, Gandhi S et al. Centralized and Local Color Doppler Ultrasound Reading Agreement for Diagnosis of the Chronic Cerebrospinal Venous Insufficiency in Patients with Multiple Sclerosis. Current neurovascular research. 2017.", "doi": "10.2174/1567202614666170718095203", "pmcid": "PMC5684782", "url": "https://pubmed.ncbi.nlm.nih.gov/28721810/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/28721810/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID28721810", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph0, 1:Methods:paragraph7, 1:Methods:paragraph11, 2:Results:paragraph3, 2:Results:paragraph4, 2:Results:paragraph5. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Expert local and central blinded Doppler readings showed substantial overall agreement and high agreement for particular criteria.", "what_it_does_not_show": "Both readers used shared acquired data; positive reader reproducibility is not independent acquisition reliability or proof of MS-specific causal obstruction.", "confounders_present": [ "Both readers used shared acquired data; positive reader reproducibility is not independent acquisition reliability or proof of MS-specific causal obstruction." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 49, "pmid": "24139135", "title": "Multimodal noninvasive and invasive imaging of extracranial venous abnormalities indicative of CCSVI: results of the PREMiSe pilot study.", "citation": "Zivadinov R, Karmon Y, Dolic K et al. Multimodal noninvasive and invasive imaging of extracranial venous abnormalities indicative of CCSVI: results of the PREMiSe pilot study. BMC neurology. 2013.", "doi": "10.1186/1471-2377-13-151", "pmcid": "PMC4015359", "url": "https://pubmed.ncbi.nlm.nih.gov/24139135/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24139135/", "tier": "A", "source_tier": "A", "kind": "observational", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PREMiSe-NCT01450072", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "PREMiSe diagnostic pilot found structural anomalies by venography/IVUS in selected ultrasound-positive candidates.", "what_it_does_not_show": "Same trial parent as 24975855; screen-negative patients lacked invasive testing and no healthy-control denominator. Differential verification prevents specificity inference.", "confounders_present": [ "Same trial parent as 24975855; screen-negative patients lacked invasive testing and no healthy-control denominator. Differential verification prevents specificity inference." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: PREMiSe-NCT01450072" ] }, { "n": 50, "pmid": "24065289", "title": "Internal jugular and vertebral vein volume flow in patients with clinically isolated syndrome or mild multiple sclerosis and healthy controls: results from a prospective sonographer-blinded study.", "citation": "Chambers B, Chambers J, Churilov L et al. Internal jugular and vertebral vein volume flow in patients with clinically isolated syndrome or mild multiple sclerosis and healthy controls: results from a prospective sonographer-blinded study. Phlebology. 2014.", "doi": "10.1177/0268355513505505", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24065289/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24065289/", "tier": "A", "source_tier": "A", "kind": "rct", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "MILD-CIS-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded mild/CIS jugular-flow study found no significant adjusted flow differences by diagnosis in supine/sitting measurements.", "what_it_does_not_show": "Related recruitment to 22961213 grouped conservatively; measured flow does not exhaust every vascular mechanism.", "confounders_present": [ "Related recruitment to 22961213 grouped conservatively; measured flow does not exhaust every vascular mechanism." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: MILD-CIS-possible-overlap" ] }, { "n": 51, "pmid": "20351669", "title": "Use of neck magnetic resonance venography, Doppler sonography and selective venography for diagnosis of chronic cerebrospinal venous insufficiency: a pilot study in multiple sclerosis patients and healthy controls.", "citation": "Hojnacki D, Zamboni P, Lopez-Soriano A et al. Use of neck magnetic resonance venography, Doppler sonography and selective venography for diagnosis of chronic cerebrospinal venous insufficiency: a pilot study in multiple sclerosis patients and healthy controls. International angiology : a journal of the International Union of Angiology. 2010.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20351669/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20351669/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID20351669", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Small multimodal pilot found all ten MS participants Doppler-positive and seven controls negative, with lower MRV sensitivity.", "what_it_does_not_show": "Only MS participants had venographic confirmation; tiny sample and differential verification prevent robust general specificity.", "confounders_present": [ "Only MS participants had venographic confirmation; tiny sample and differential verification prevent robust general specificity." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 52, "pmid": "22530753", "title": "Chronic cerebrospinal venous insufficiency and venous stenoses in multiple sclerosis.", "citation": "Blinkenberg M, Akeson P, Sillesen H et al. Chronic cerebrospinal venous insufficiency and venous stenoses in multiple sclerosis. Acta neurologica Scandinavica. 2012.", "doi": "10.1111/j.1600-0404.2012.01671.x", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22530753/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22530753/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22530753", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Doppler/MRV/phase-contrast assessment found no participant meeting two CCSVI criteria and no significant MS/control flow difference.", "what_it_does_not_show": "Small study supports diagnostic challenge, not exact exclusion of subtle flow differences.", "confounders_present": [ "Small study supports diagnostic challenge, not exact exclusion of subtle flow differences." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 53, "pmid": "20351666", "title": "Extracranial Doppler sonographic criteria of chronic cerebrospinal venous insufficiency in the patients with multiple sclerosis.", "citation": "Simka M, Kostecki J, Zaniewski M et al. Extracranial Doppler sonographic criteria of chronic cerebrospinal venous insufficiency in the patients with multiple sclerosis. International angiology : a journal of the International Union of Angiology. 2010.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20351666/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20351666/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID20351666", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Open-label series of 70 MS patients reported frequent extracranial ultrasound criteria.", "what_it_does_not_show": "No healthy comparator or blinded discrimination; high prevalence alone cannot establish MS specificity.", "confounders_present": [ "No healthy comparator or blinded discrimination; high prevalence alone cannot establish MS specificity." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 54, "pmid": "20351668", "title": "The reproducibility of colour Doppler in chronic cerebrospinal venous insufficiency associated with multiple sclerosis.", "citation": "Menegatti E, Genova V, Tessari M et al. The reproducibility of colour Doppler in chronic cerebrospinal venous insufficiency associated with multiple sclerosis. International angiology : a journal of the International Union of Angiology. 2010.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20351668/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20351668/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID20351668", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Training/retest study showed better operator agreement after CCSVI training and high same-operator repeat agreement.", "what_it_does_not_show": "Small study with shared scanning system does not establish universal cross-center specificity; abstract confidence limits above one are not repeated as verified interval estimates.", "confounders_present": [ "Small study with shared scanning system does not establish universal cross-center specificity; abstract confidence limits above one are not repeated as verified interval estimates." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 55, "pmid": "22364941", "title": "Sensitivity and specificity for screening of chronic cerebrospinal venous insufficiency using a multimodal non-invasive imaging approach in patients with multiple sclerosis.", "citation": "Dolic K, Marr K, Valnarov V et al. Sensitivity and specificity for screening of chronic cerebrospinal venous insufficiency using a multimodal non-invasive imaging approach in patients with multiple sclerosis. Functional neurology. 2011.", "doi": "", "pmcid": "PMC3814559", "url": "https://pubmed.ncbi.nlm.nih.gov/22364941/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22364941/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CTEVD-RESOURCE-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Multimodal Doppler/MRV combinations improved specificity for selected CCSVI definitions in MS/control samples.", "what_it_does_not_show": "Substantial control positivity, shared recruitment resources and criterion selection limit out-of-sample generalization; not causal MS evidence.", "confounders_present": [ "Substantial control positivity, shared recruitment resources and criterion selection limit out-of-sample generalization; not causal MS evidence." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CTEVD-RESOURCE-possible-overlap" ] }, { "n": 56, "pmid": "22124776", "title": "Chronic cerebrospinal venous insufficiency: does ultrasound really distinguish multiple sclerosis subjects from healthy controls?", "citation": "Kantarci F, Albayram S, Demirci NO et al. Chronic cerebrospinal venous insufficiency: does ultrasound really distinguish multiple sclerosis subjects from healthy controls? European radiology. 2012.", "doi": "10.1007/s00330-011-2338-5", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22124776/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22124776/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22124776", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Case-control Doppler study found substantial overlap of venous criteria and mostly similar flow.", "what_it_does_not_show": "Criterion-specific calibre differences are not a coherent causal obstruction or proof of no vascular role.", "confounders_present": [ "Criterion-specific calibre differences are not a coherent causal obstruction or proof of no vascular role." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 57, "pmid": "24175155", "title": "Hydration status substantially affects chronic cerebrospinal venous insufficiency assessments.", "citation": "Diaconu CI, Fox RJ, Grattan A et al. Hydration status substantially affects chronic cerebrospinal venous insufficiency assessments. Neurology. Clinical practice. 2013.", "doi": "10.1212/CPJ.0b013e3182a78f15", "pmcid": "PMC3806929", "url": "https://pubmed.ncbi.nlm.nih.gov/24175155/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24175155/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24175155", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [ "M3" ], "evidence_class": "Moderate", "system": "human interventional", "decisive_perturbation": false, "endogenous": true, "direction": "contradicts", "what_it_shows": "Hydration challenge in 16 people changed CCSVI diagnostic classification, with most dehydrated positives losing status after fluid intake.", "what_it_does_not_show": "Direct physiological sensitivity of measurement does not prove every positive diagnosis artifactual or test MS disease modification.", "confounders_present": [ "Direct physiological sensitivity of measurement does not prove every positive diagnosis artifactual or test MS disease modification." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [] }, { "n": 58, "pmid": "23301144", "title": "Multiple sclerosis, an unlikely cause of chronic cerebrospinal venous insufficiency: retrospective analysis of catheter venography.", "citation": "Simka M, Ludyga T, Kazibudzki M et al. Multiple sclerosis, an unlikely cause of chronic cerebrospinal venous insufficiency: retrospective analysis of catheter venography. JRSM short reports. 2012.", "doi": "10.1258/shorts.2011.010146", "pmcid": "PMC3434428", "url": "https://pubmed.ncbi.nlm.nih.gov/23301144/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23301144/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23301144", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Retrospective venography in 353 patients found venous severity uncorrelated with disease duration.", "what_it_does_not_show": "A lack of duration correlation does not prove congenital causation; selected treated/detected cases do not establish temporal precedence.", "confounders_present": [ "A lack of duration correlation does not prove congenital causation; selected treated/detected cases do not establish temporal precedence." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 59, "pmid": "23406210", "title": "Chronic cerebrospinal venous insufficiency in multiple sclerosis: a highly prevalent age-dependent phenomenon.", "citation": "Lanzillo R, Mancini M, Liuzzi R et al. Chronic cerebrospinal venous insufficiency in multiple sclerosis: a highly prevalent age-dependent phenomenon. BMC neurology. 2013.", "doi": "10.1186/1471-2377-13-20", "pmcid": "PMC3577443", "url": "https://pubmed.ncbi.nlm.nih.gov/23406210/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/23406210/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23406210", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "MS/control Doppler study reported high CCSVI prevalence associated strongly with age and poorly with clinical variables.", "what_it_does_not_show": "Age-dependent association and diagnostic heterogeneity permit vascular ageing rather than primary MS causality.", "confounders_present": [ "Age-dependent association and diagnostic heterogeneity permit vascular ageing rather than primary MS causality." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 60, "pmid": "25081746", "title": "Chronic cerebrospinal venous insufficiency is not associated with chronic venous disorders: A case-control study.", "citation": "Leone MA, Raymkulova O, Lochner P et al. Chronic cerebrospinal venous insufficiency is not associated with chronic venous disorders: A case-control study. Phlebology. 2015.", "doi": "10.1177/0268355514544782", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/25081746/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/25081746/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID25081746", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded study found no association between CCSVI classification and other chronic venous disease.", "what_it_does_not_show": "Phenotype-specific negative association does not test MS therapeutic benefit or directly disprove brain venous effects.", "confounders_present": [ "Phenotype-specific negative association does not test MS therapeutic benefit or directly disprove brain venous effects." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 61, "pmid": "22587224", "title": "Clinical correlates of chronic cerebrospinal venous insufficiency in multiple sclerosis.", "citation": "Weinstock-Guttman B, Ramanathan M, Marr K et al. Clinical correlates of chronic cerebrospinal venous insufficiency in multiple sclerosis. BMC neurology. 2012.", "doi": "10.1186/1471-2377-12-26", "pmcid": "PMC3462121", "url": "https://pubmed.ncbi.nlm.nih.gov/22587224/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22587224/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CTEVD-RESOURCE-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "CTEVD clinical analysis associated CCSVI with progressive status but not broadly with disability or course severity.", "what_it_does_not_show": "Same parent as 21490322; selected nominal associations and shared measures are not independent causal lines.", "confounders_present": [ "Same parent as 21490322; selected nominal associations and shared measures are not independent causal lines." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CTEVD-RESOURCE-possible-overlap" ] }, { "n": 62, "pmid": "22029656", "title": "Chronic cerebrospinal venous insufficiency in multiple sclerosis: clinical correlates from a multicentre study.", "citation": "Bastianello S, Romani A, Viselner G et al. Chronic cerebrospinal venous insufficiency in multiple sclerosis: clinical correlates from a multicentre study. BMC neurology. 2011.", "doi": "10.1186/1471-2377-11-132", "pmcid": "PMC3221625", "url": "https://pubmed.ncbi.nlm.nih.gov/22029656/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22029656/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22029656", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1", "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Six-center series reported high CCSVI prevalence and associations with progressive course and disability, with large center variation.", "what_it_does_not_show": "No healthy-control denominator; site variation, age and duration confounding prevent specificity and primary-driver inference.", "confounders_present": [ "No healthy-control denominator; site variation, age and duration confounding prevent specificity and primary-driver inference." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 63, "pmid": "22915599", "title": "Brain hemodynamic changes associated with chronic cerebrospinal venous insufficiency are not specific to multiple sclerosis and do not increase its severity.", "citation": "Garaci FG, Marziali S, Meschini A et al. Brain hemodynamic changes associated with chronic cerebrospinal venous insufficiency are not specific to multiple sclerosis and do not increase its severity. Radiology. 2012.", "doi": "10.1148/radiol.12112245", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22915599/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22915599/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22915599", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "mixed", "what_it_shows": "Perfusion study found reduced cerebral blood volume/flow with CCSVI in MS and non-MS groups, while disability related to a different transit-time measure.", "what_it_does_not_show": "Cross-sectional perfusion and nonspecific vascular effects do not establish MS-specific inflammation/progression causality.", "confounders_present": [ "Cross-sectional perfusion and nonspecific vascular effects do not establish MS-specific inflammation/progression causality." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [] }, { "n": 64, "pmid": "22576891", "title": "No association between conventional brain MR imaging and chronic cerebrospinal venous insufficiency in multiple sclerosis.", "citation": "Zivadinov R, Cutter G, Marr K et al. No association between conventional brain MR imaging and chronic cerebrospinal venous insufficiency in multiple sclerosis. AJNR. American journal of neuroradiology. 2012.", "doi": "10.3174/ajnr.A3112", "pmcid": "PMC7964624", "url": "https://pubmed.ncbi.nlm.nih.gov/22576891/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22576891/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CTEVD-RESOURCE-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "Brain MRI analysis found no convincing CCSVI association with conventional lesion or atrophy measures.", "what_it_does_not_show": "Cross-sectional analysis cannot exclude a small longitudinal mechanism; related cohort resources do not form wholly independent evidence.", "confounders_present": [ "Cross-sectional analysis cannot exclude a small longitudinal mechanism; related cohort resources do not form wholly independent evidence." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CTEVD-RESOURCE-possible-overlap" ] }, { "n": 65, "pmid": "20351672", "title": "Chronic cerebrospinal venous insufficiency and iron deposition on susceptibility-weighted imaging in patients with multiple sclerosis: a pilot case-control study.", "citation": "Zivadinov R, Schirda C, Dwyer MG et al. Chronic cerebrospinal venous insufficiency and iron deposition on susceptibility-weighted imaging in patients with multiple sclerosis: a pilot case-control study. International angiology : a journal of the International Union of Angiology. 2010.", "doi": "", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/20351672/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/20351672/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "RRMS16-HC8-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Small 16-RRMS/8-control susceptibility MRI study associated iron measures with venous hemodynamic severity.", "what_it_does_not_show": "Iron-sensitive imaging is a proxy and cross-sectional association cannot predict progression causally; grouped with 20018140.", "confounders_present": [ "Iron-sensitive imaging is a proxy and cross-sectional association cannot predict progression causally; grouped with 20018140." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: RRMS16-HC8-possible-overlap" ] }, { "n": 66, "pmid": "22011402", "title": "Decreased brain venous vasculature visibility on susceptibility-weighted imaging venography in patients with multiple sclerosis is related to chronic cerebrospinal venous insufficiency.", "citation": "Zivadinov R, Poloni GU, Marr K et al. Decreased brain venous vasculature visibility on susceptibility-weighted imaging venography in patients with multiple sclerosis is related to chronic cerebrospinal venous insufficiency. BMC neurology. 2011.", "doi": "10.1186/1471-2377-11-128", "pmcid": "PMC3210082", "url": "https://pubmed.ncbi.nlm.nih.gov/22011402/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/22011402/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CTEVD-RESOURCE-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [], "evidence_class": "Weak", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "supports", "what_it_shows": "Susceptibility venography associated reduced vessel visibility with CCSVI in MS.", "what_it_does_not_show": "Visibility depends on metabolism, blood oxygenation and imaging; does not directly demonstrate pressure obstruction or cause of MS.", "confounders_present": [ "Visibility depends on metabolism, blood oxygenation and imaging; does not directly demonstrate pressure obstruction or cause of MS." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": false, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CTEVD-RESOURCE-possible-overlap" ] }, { "n": 67, "pmid": "28430292", "title": "Failure of the vascular hypothesis of multiple sclerosis in a rat model of chronic cerebrospinal venous insufficiency.", "citation": "Zakaria MMA, Mikhael SY, Hussein AKA et al. Failure of the vascular hypothesis of multiple sclerosis in a rat model of chronic cerebrospinal venous insufficiency. Folia neuropathologica. 2017.", "doi": "10.5114/fn.2017.66713", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/28430292/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/28430292/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID28430292", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC2" ], "favors_models": [ "M2" ], "evidence_class": "Moderate", "system": "animal in vivo", "decisive_perturbation": true, "endogenous": false, "direction": "mixed", "what_it_shows": "Chronic jugular ligation in rats produced iron deposition and reactive gliosis, but no demyelination, axonal loss, inflammation or neurological weakness after eight months.", "what_it_does_not_show": "Positive vascular tissue effects remain real. Severe artificial ligation and collateral anatomy differ from human CCSVI; this is a scoped sufficiency challenge, not proof that all vascular roles in MS are absent.", "confounders_present": [ "Positive vascular tissue effects remain real. Severe artificial ligation and collateral anatomy differ from human CCSVI; this is a scoped sufficiency challenge, not proof that all vascular roles in MS are absent." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [] }, { "n": 68, "pmid": "24119384", "title": "Prevalence of extracranial venous narrowing on catheter venography in people with multiple sclerosis, their siblings, and unrelated healthy controls: a blinded, case-control study.", "citation": "Traboulsee AL, Knox KB, Machan L et al. Prevalence of extracranial venous narrowing on catheter venography in people with multiple sclerosis, their siblings, and unrelated healthy controls: a blinded, case-control study. Lancet (London, England). 2014.", "doi": "10.1016/S0140-6736(13)61747-X", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/24119384/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/24119384/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CANADIAN-DIAGNOSTIC", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [ "M3" ], "evidence_class": "Strong", "system": "human observational", "decisive_perturbation": true, "endogenous": false, "direction": "contradicts", "what_it_shows": "Blinded Canadian catheter-venography study found greater-than-50% narrowing similarly common in MS, unaffected siblings and unrelated controls; ultrasound poorly identified such narrowing.", "what_it_does_not_show": "Anatomical narrowing is not validated pathological obstruction; incomplete invasive observations and fixed definitions bound generalization.", "confounders_present": [ "Anatomical narrowing is not validated pathological obstruction; incomplete invasive observations and fixed definitions bound generalization." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "Pivotal test, including null or negative results and restricted contexts; this flag is not a positive threshold crossing.", "shared_components": [ "Shared or possible shared parent: CANADIAN-DIAGNOSTIC" ] }, { "n": 69, "pmid": "27887935", "title": "Prevalence of Extracranial Venous Narrowing on Magnetic Resonance Venography Is Similar in People With Multiple Sclerosis, Their Siblings, and Unrelated Healthy Controls: A Blinded, Case-Control Study.", "citation": "Martin N, Traboulsee AL, Machan L et al. Prevalence of Extracranial Venous Narrowing on Magnetic Resonance Venography Is Similar in People With Multiple Sclerosis, Their Siblings, and Unrelated Healthy Controls: A Blinded, Case-Control Study. Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes. 2017.", "doi": "10.1016/j.carj.2016.07.002", "pmcid": "", "url": "https://pubmed.ncbi.nlm.nih.gov/27887935/", "source_pointer": "https://pubmed.ncbi.nlm.nih.gov/27887935/", "tier": "A", "source_tier": "A", "kind": "primary", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "CANADIAN-DIAGNOSTIC", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "relates_to_subclaims": [ "SC1" ], "favors_models": [], "evidence_class": "Moderate", "system": "human observational", "decisive_perturbation": false, "endogenous": false, "direction": "contradicts", "what_it_shows": "MRI companion study found extracranial narrowing common across MS, sibling and unrelated-control groups, with poor interreader and MRV/venography agreement.", "what_it_does_not_show": "Same diagnostic parent as 24119384; different imaging readout adds assay information rather than independent population replication.", "confounders_present": [ "Same diagnostic parent as 24119384; different imaging readout adds assay information rather than independent population replication." ], "verification": "verified", "verification_note": "Bounded source attribution; not proof of the nominal mechanism.", "citation_context": { "retrieved": false, "supporting_count": 0, "mentioning_count": 0, "contrasting_count": 0, "notable_contrasting_statements": [] }, "discriminating_contrast": true, "decisive_test_note": "", "shared_components": [ "Shared or possible shared parent: CANADIAN-DIAGNOSTIC" ] } ], "verification_summary": { "load_bearing_claims_checked": 74, "verified": 74, "unverified": 0, "contradicted": 0, "note": "Verified attribution is distinct from mechanism truth or complete body access." }, "factual_issues_found": [], "cap_rules_applied": [], "cap_precedence_resolutions": [ { "collision": "Perturbation in a defined setting versus broader inference", "subclaim_scope_cap_binds_on": "Correcting chronic cerebrospinal venous insufficiency with venoplasty improves multiple-sclerosis disability and disease activity.", "subclaim_scope_threshold_binds_on": "The precise experimentally tested subclaim scope", "resolution": "Positive physical dilation/flow/pressure and MRI results retain their tested scope. The universal biomarker-only cap limits the inference to disability benefit. Native mechanical procedural injury is scored separately with an explicit adapted field-valid criterion, not recapped as pure association merely because randomized exposure to a complication is unethical. No negative RCT is counted as a positive clinical threshold crossing.", "note": "Convergent lines are assessed as a set; one weak leg is not re-capped over the assembled case." } ], "boundary_check_BGD": [ { "subclaim_id": "SC1", "field_valid_perturbation_quote": "\n- Endogenous genetic deletion, suppression, or degron depletion of the proposed mediator in vivo\n- Selective pathway inhibition that changes onset/progression while preserving broader viability\n- Vagotomy-type natural experiment, only if confounding is rigorously controlled AND effect is disease-initiation relevant rather than merely associated", "qualifying_evidence_present": "no", "qualifying_evidence_citation": "", "gamma_hard_rules_triggered": [ "Venous pressure/flow restoration is target engagement rather than a positive disability endpoint.", "MRI lesions, iron deposition and gliosis do not substitute for clinical benefit or inflammatory demyelination.", "The rubric aggregation/seeding/organoid hard rules do not literally apply to venoplasty; the pertinent boundary is positive disease-relevant intervention and specific vascular causation." ], "disease_phenotype_relevance": "yes", "perturbation_result_positive": "no", "perturbation_result_note": "Initial associations reach at most Β, and the literal specificity/reproducibility claim is downgraded once to Α because blinded multicenter and sibling-controlled originals show common narrowing without MS specificity and unstable/operator-dependent composite diagnosis. Positive M-mode and trained-reader originals are retained; the result is about the universal composite, not the existence of real venous lesions.", "ceiling_from_boundary_check": "Γ" }, { "subclaim_id": "SC2", "field_valid_perturbation_quote": "\n- Endogenous genetic deletion, suppression, or degron depletion of the proposed mediator in vivo\n- Selective pathway inhibition that changes onset/progression while preserving broader viability\n- Vagotomy-type natural experiment, only if confounding is rigorously controlled AND effect is disease-initiation relevant rather than merely associated", "qualifying_evidence_present": "no", "qualifying_evidence_citation": "", "gamma_hard_rules_triggered": [ "Venous pressure/flow restoration is target engagement rather than a positive disability endpoint.", "MRI lesions, iron deposition and gliosis do not substitute for clinical benefit or inflammatory demyelination.", "The rubric aggregation/seeding/organoid hard rules do not literally apply to venoplasty; the pertinent boundary is positive disease-relevant intervention and specific vascular causation." ], "disease_phenotype_relevance": "yes", "perturbation_result_positive": "no", "perturbation_result_note": "Iron/gliosis after rat ligation and human CSF/perfusion associations support a mechanistic starting ceiling Γ. Early MS/CIS without confirmed CCSVI and ligation without inflammatory demyelination challenge the necessary/sufficient initiating chain: one scoped causal-pattern downgrade gives Β. Artificial exposure, limited timing and detection prevent a universal statement that vascular biology cannot affect MS.", "ceiling_from_boundary_check": "Γ" }, { "subclaim_id": "SC3", "field_valid_perturbation_quote": "\n- Endogenous genetic deletion, suppression, or degron depletion of the proposed mediator in vivo\n- Selective pathway inhibition that changes onset/progression while preserving broader viability\n- Vagotomy-type natural experiment, only if confounding is rigorously controlled AND effect is disease-initiation relevant rather than merely associated", "qualifying_evidence_present": "no", "qualifying_evidence_citation": "", "gamma_hard_rules_triggered": [ "Venous pressure/flow restoration is target engagement rather than a positive disability endpoint.", "MRI lesions, iron deposition and gliosis do not substitute for clinical benefit or inflammatory demyelination.", "The rubric aggregation/seeding/organoid hard rules do not literally apply to venoplasty; the pertinent boundary is positive disease-relevant intervention and specific vascular causation." ], "disease_phenotype_relevance": "yes", "perturbation_result_positive": "no", "perturbation_result_note": "Flow/pressure responses and the positive expanded Brave Dreams MRI finding justify considering Γ. The same trial did not show clinical functional benefit, and independent Canadian/PREMiSe sham comparisons failed to confirm the uncontrolled subjective response. One parsimonious-alternative falsification downgrade (expectation/regression and nonspecific response observed in sham) yields Β for clinical benefit. Incomplete target engagement means a complete mechanism-blocking falsification is not claimed; the positive MRI finding remains a research lead.", "ceiling_from_boundary_check": "Γ" }, { "subclaim_id": "SC4", "field_valid_perturbation_quote": "\n- Endogenous genetic deletion, suppression, or degron depletion of the proposed mediator in vivo\n- Selective pathway inhibition that changes onset/progression while preserving broader viability\n- Vagotomy-type natural experiment, only if confounding is rigorously controlled AND effect is disease-initiation relevant rather than merely associated", "qualifying_evidence_present": "yes", "qualifying_evidence_citation": "PMID30266886, PMID21679067, PMID21803799, PMID21107001", "gamma_hard_rules_triggered": [ "Venous pressure/flow restoration is target engagement rather than a positive disability endpoint.", "MRI lesions, iron deposition and gliosis do not substitute for clinical benefit or inflammatory demyelination.", "The rubric aggregation/seeding/organoid hard rules do not literally apply to venoplasty; the pertinent boundary is positive disease-relevant intervention and specific vascular causation." ], "disease_phenotype_relevance": "yes", "perturbation_result_positive": "yes", "perturbation_result_note": "Objective local thrombosis after balloon treatment, thrombosed/migrated stents and procedural vessel/device injury demonstrate that this intervention can cause harm in defined clinical settings. Ε preserves mapped technique/operator and serious-event boundaries; uncontrolled delayed systemic events and selected referrals cannot supply a universal causal incidence. Clinical balloon-only RCTs reported few local complications and no procedure-related serious adverse events.", "ceiling_from_boundary_check": "Δ or higher" } ], "thresholds_tested": [ { "subclaim_id": "SC1", "threshold": "Δ", "requirement_quoted": "Requires at least one genuine causal perturbation in a disease-relevant in vivo system, or equivalent human natural experiment that materially supports the mechanism.", "satisfied": "no", "supporting_evidence": [], "what_would_cross_it": "An independently acquired, prospectively fixed imaging/pressure classifier must replicate across blinded centers and distinguish MS from siblings/healthy/other-neurological controls, at stable physiological conditions and without case-dependent verification." }, { "subclaim_id": "SC2", "threshold": "Δ", "requirement_quoted": "Requires at least one genuine causal perturbation in a disease-relevant in vivo system, or equivalent human natural experiment that materially supports the mechanism.", "satisfied": "no", "supporting_evidence": [], "what_would_cross_it": "Show early MS-relevant inflammation/demyelination follows independently verified venous obstruction, and selective correction alters the clinical trajectory, with collateral/pressure, immune and sham controls and a prospective scope." }, { "subclaim_id": "SC3", "threshold": "Δ", "requirement_quoted": "Requires at least one genuine causal perturbation in a disease-relevant in vivo system, or equivalent human natural experiment that materially supports the mechanism.", "satisfied": "no", "supporting_evidence": [], "what_would_cross_it": "A prospectively registered blinded comparison must show meaningful clinical benefit with confirmed sustained flow correction, stable usual therapy, adequate power, and intention-to-treat results; prespecified anatomy may be tested but post hoc responders cannot rescue the broad claim." }, { "subclaim_id": "SC4", "threshold": "Δ", "requirement_quoted": "Requires at least one genuine causal perturbation in a disease-relevant in vivo system, or equivalent human natural experiment that materially supports the mechanism.", "satisfied": "yes", "supporting_evidence": [ "[2] Canadian sham-controlled trial randomized 104 participants; primary MSQOL54 change and secondary clinical/MRI outcomes did not improve with venoplasty. Both arms had transient subjective improvement. One asymptomatic jugular dissection occurred after venoplasty.", "[16] Series of 495 procedures in 461 MS patients documented venous rupture, dissection and eight stent or treated-segment thromboses, alongside no short-term death or major bleeding.", "[21] A patient developed jugular thrombosis after balloon venoplasty without a stent despite anticoagulation, requiring surgical thrombectomy.", "[22] Procedural series documented two thrombotic stent occlusions and surgical femoral venotomy to retrieve an angioplasty balloon." ], "what_would_cross_it": "" }, { "subclaim_id": "SC4", "threshold": "Ε", "requirement_quoted": "Requires causal support in a defined context, but with clear restriction by subtype, disease stage, model, or tissue.\n\nUse Ε when there is a real causal contribution, but generalization to the entire disease class fails.", "satisfied": "yes", "supporting_evidence": [ "[2] Canadian sham-controlled trial randomized 104 participants; primary MSQOL54 change and secondary clinical/MRI outcomes did not improve with venoplasty. Both arms had transient subjective improvement. One asymptomatic jugular dissection occurred after venoplasty.", "[16] Series of 495 procedures in 461 MS patients documented venous rupture, dissection and eight stent or treated-segment thromboses, alongside no short-term death or major bleeding.", "[21] A patient developed jugular thrombosis after balloon venoplasty without a stent despite anticoagulation, requiring surgical thrombectomy.", "[22] Procedural series documented two thrombotic stent occlusions and surgical femoral venotomy to retrieve an angioplasty balloon." ], "what_would_cross_it": "" }, { "subclaim_id": "SC4", "threshold": "Ζ", "requirement_quoted": "Requires:\n- Multiple independent causal lines in vivo\n- Replication across at least two relevant systems\n- Narrowing of major alternative models", "satisfied": "no", "supporting_evidence": [ "[2] Canadian sham-controlled trial randomized 104 participants; primary MSQOL54 change and secondary clinical/MRI outcomes did not improve with venoplasty. Both arms had transient subjective improvement. One asymptomatic jugular dissection occurred after venoplasty.", "[16] Series of 495 procedures in 461 MS patients documented venous rupture, dissection and eight stent or treated-segment thromboses, alongside no short-term death or major bleeding.", "[21] A patient developed jugular thrombosis after balloon venoplasty without a stent despite anticoagulation, requiring surgical thrombectomy.", "[22] Procedural series documented two thrombotic stent occlusions and surgical femoral venotomy to retrieve an angioplasty balloon." ], "what_would_cross_it": "Further upper support requires prospectively ascertained objective causal complications with complete procedure denominators, harmonized attribution and longer surveillance across balloon/stent/operator settings; delayed systemic events require alternative-cause adjudication." } ], "generalization_check": { "generalization_tested": "yes", "context_boundary_mapped": "yes", "internal_negative_controls": [ "Canadian sham reproduces transient subjective improvement; stable/matched DMT and blinded physician outcome attribution narrow expectation and event misclassification.", "Brave Dreams blinded clinical/MRI outcomes and sham restored-flow positives distinguish offered treatment from verified target engagement.", "Sibling/unrelated/other-neurological controls reveal common narrowing; trained-reader positives are retained alongside independent acquisition variation.", "Rat ligation sham controls show iron/gliosis without inflammation/demyelination; this maps phenotype limits rather than zero vascular effect.", "Balloon-only supervised trials versus observational stenting and learning-curve series map harm settings without assigning every later systemic event to the procedure." ], "note": "Trial disease stages, low-EDSS diagnostic cohorts, pediatric/CIS timing, balloon versus stent, anatomical subtype, collateral physiology and operator experience are explicit boundaries. Favorable anatomy is a post hoc finding to prospectively test, not a retrospectively adopted responder-only scope. No blanket rejection of all vascular contributions to MS follows." }, "falsification_patterns_met": [ { "pattern": "SC1: Alternative models explain the same findings more parsimoniously", "evidence": "Common narrowing in siblings/healthy controls plus criterion/operator/state dependence contradict universal MS specificity. Apply one downgrade from the initial Β association ceiling to Α, retaining contrary positive originals.", "downgrade_applied": true }, { "pattern": "SC2: Pathology still initiates in its absence", "evidence": "Early CIS/MS without confirmed CCSVI challenges necessary initiation; ligation without demyelination adds a related sufficiency boundary. Apply one scoped downgrade Γ to Β, not a separate double penalty for each report. Detection and model-exposure limitations are explicit.", "downgrade_applied": true }, { "pattern": "SC3: Alternative models explain the same findings more parsimoniously", "evidence": "Sham reproduces transient subjective gains and clinical randomized endpoints do not separate, explaining uncontrolled benefits without intervention-specific MS efficacy. Apply one downgrade Γ to Β. Repeated trial nulls are not multiple patterns; complete mechanism blockade is not claimed with incomplete target engagement.", "downgrade_applied": true }, { "pattern": "SC4: No triggered falsification of the bounded can-cause mechanical injury claim", "evidence": "Low serious-event occurrence in supervised balloon protocols limits rate/generalization; it does not contradict objectively documented thrombosis/device injury elsewhere.", "downgrade_applied": false } ], "pitfalls_flagged": [ { "pitfall": "Flow/MRI substituted for clinical causality", "where": "Target engagement and lesion-free MRI findings cannot establish disability benefit." }, { "pitfall": "Same-trial reanalysis counted as independent replication", "where": "Brave Dreams expanded population and anatomical post hoc analysis share the parent trial." }, { "pitfall": "Failure to engage the target treated as complete mechanism blockade", "where": "PREMiSe and Brave Dreams incomplete flow correction limit causal null interpretation." }, { "pitfall": "All events after treatment assigned to the procedure", "where": "Mechanical local injury differs from delayed systemic illness; RCT attribution and referral selection matter." }, { "pitfall": "Successful readers equated with independent physiological reproducibility", "where": "Shared-clip central/local agreement does not settle independent acquisition or disease specificity." } ], "causal_tally_audit": { "tally_claimed_by_document": 3, "tally_after_audit": 3, "tally_unit": "Positive qualifying study units across scoped subclaims, not independent causal lines or full-claim necessity/sufficiency.", "screened_discriminating_contrasts": 32, "items_rejected": [ "Null and negative contrasts are discriminators, not positive threshold crossings. Reports and replications are not independent causal lines.", "Reports sharing participants, models or instruments are not independent causal lines.", "Pivotal nulls do not earn positive threshold crossings." ] }, "steelman": { "case_one_rung_higher": "One rung above, Γ: pressure and flow correction, original RRMS improvements and positive expanded Brave Dreams MRI effects support a biologically credible intervention. Only 54% of treated participants had restored flow in Brave Dreams, PREMiSe missed randomized hemodynamic success, and trials were underpowered for some small effects. Those are substantial reasons to avoid claiming an ideal fully engaged mechanism is disproven. The blocker is the registered clinical-benefit claim: independent blinded clinical results fail to separate from sham and transient improvement occurs in sham, triggering one parsimonious-alternative downgrade.", "case_one_rung_lower": "One rung below, Α: poor specificity and repeated clinical nulls could make the whole chain conceptual or artifactual. However, actual target responses, positive blinded diagnostic originals and a positive expanded MRI endpoint mean the benefit hypothesis is not devoid of mechanistic empirical content. Incomplete engagement prevents counting every null as complete mechanism ablation. No second independent falsification pattern is imposed merely by repeating the same clinical comparator failure.", "which_rejected": "Retain Β for the registered benefit scope, Α for the universal diagnostic claim and Ε for bounded objective procedural injury. The positive MRI reanalysis and genuine vascular effects remain visible; no subgroup redefinition or procedural-harm finding rescues/condemns the benefit score by substitution.", "blocking_cap_threshold_or_missing_experiment": "Missing experiment: If a scientifically and ethically justified study is contemplated, prospectively fix anatomical/pressure entry criteria and MS stage, verify sustained flow correction, randomize balloon venoplasty versus convincing sham with stable usual therapy and adequate clinical power, and test prespecified functional/relapse outcomes alongside MRI without conditioning on post-treatment responders." }, "final_score": { "hsef_level": "Β", "hsef_descriptor": "Associational", "confidence": "Moderate", "confidence_rationale": "Moderate reflects evidence density and reproducibility, not the reviewer's access depth and not any belief about correctness: three independent sham-controlled trials and several blinded diagnostic programmes replicate the clinical null, but every trial was small or under-recruited with incomplete target engagement, and the diagnostic literature remains operator- and protocol-dependent. High was considered and declined on that heterogeneity; Low was declined because the work is peer reviewed and replicated across centres.", "rests_on_non_peer_reviewed_work": false, "rationale": "Preregistered primary-SC3 aggregation returns Β: meaningful flow/MRI evidence is retained, but clinical benefit is not demonstrated and sham improvement supplies a more parsimonious explanation for uncontrolled subjective response. A single Step11 downgrade from the Γ mechanistic/proxy starting point is explicit. Weakest-link aggregation would return Α because SC1 universal reproducibility/specificity fails; procedural injury Ε is separate and cannot determine a benefit score." }, "role_of_mechanism": { "classification": "epiphenomenon", "derivation_step_matched": 2, "derivation": "For CCSVI as a driver of MS, no demonstrated causal dependency in either direction is established by this corpus, so step2 returns epiphenomenon as the framework category for the proposed MS-driver relationship. This label does not mean veins are physiologically inert. The role procedure separately demonstrates a causal initiating role for some local iatrogenic injuries; fitting that safety mechanism into the nominal MS-role label would conflate two claims.", "tournament_used_as_tiebreaker": false, "note": "Derived from causal direction, not tournament rank." }, "extended_scoring_MSD": { "momentum": { "value": "Little new work", "artifact": "The bounded registered searches through 12 October 2026 retrieved the completed PREMiSe, Canadian, Brave Dreams and wait-list trials plus the expanded 2019-online/2020-issue MRI report, without a verified newer decisive sham clinical result in this selected corpus. This is a search-bounded trajectory judgment, not proof that randomized work ceased globally or no trial is ongoing.", "justification": "The bounded registered searches through 12 October 2026 retrieved the completed PREMiSe, Canadian, Brave Dreams and wait-list trials plus the expanded 2019-online/2020-issue MRI report, without a verified newer decisive sham clinical result in this selected corpus. This is a search-bounded trajectory judgment, not proof that randomized work ceased globally or no trial is ongoing." }, "stability": { "value": "Stable", "trigger": "No named verified pending result determining the clinical-benefit level was identified. Prospective sustained-target anatomy-stratified clinical replication could raise it, but the proposed experiment is not a verified underway program.", "justification": "No named verified pending result determining the clinical-benefit level was identified. Prospective sustained-target anatomy-stratified clinical replication could raise it, but the proposed experiment is not a verified underway program." }, "divergence": { "implied_level": null, "implied_level_basis": "No single field-implied level is defensible from conflicting framings.", "assessed_level": "Β", "gap_in_rungs": null, "value": "Contested", "justification": "No manufactured field consensus or arithmetic gap." }, "calibration_note": "M/S/D never modify HSEF level or confidence." }, "change_record": { "applies": false, "prior_level": "none assigned", "prior_confidence": null, "prior_source": null, "derived_before_consulting_prior": true, "new_level": "Β", "direction": "newly assigned", "what_moved_it": "Fresh primary evidence appraisal; not blinded.", "divergence_from_other_reviewers": null }, "proposed_decisive_experiments": [ { "name": "Registered boundary experiment", "experiment": "If a scientifically and ethically justified study is contemplated, prospectively fix anatomical/pressure entry criteria and MS stage, verify sustained flow correction, randomize balloon venoplasty versus convincing sham with stable usual therapy and adequate clinical power, and test prespecified functional/relapse outcomes alongside MRI without conditioning on post-treatment responders.", "readout": "Sustained blinded target flow/pressure, disability function, relapses, MRI lesions and separately attributed vascular/device complications", "critical_control": "Sham blinding assessment, stable disease-modifying therapy, independent venographic/flow adjudication, intention-to-treat analysis, prespecified anatomy interaction, collateral physiology and procedure-denominator safety follow-up", "supporting_result": "Meaningful clinical advantage over sham with sustained engagement, prospective anatomical effect modification and independent replication", "falsifying_result": "No clinical separation despite reliable target correction, or only exploratory MRI/subjective changes without functional benefit" } ], "knowledge_gaps": [ { "name": "Gap 1", "statement": "Validate a stable pathological-obstruction definition using independent blinded acquisition, pressure/flow and sibling/healthy controls.", "relevance": "Limits mechanism identification or scope." }, { "name": "Gap 2", "statement": "Separate procedural success, sustained target engagement and clinical mediation; low engagement is a limitation rather than a responder-defined rescue.", "relevance": "Limits mechanism identification or scope." }, { "name": "Gap 3", "statement": "Prospectively test the favorable-anatomy MRI lead against clinical outcomes and multiplicity control in an independent cohort.", "relevance": "Limits mechanism identification or scope." }, { "name": "Gap 4", "statement": "Clarify stage, collateral and inflammatory mechanisms without generalizing rat iron/gliosis to human demyelination.", "relevance": "Limits mechanism identification or scope." }, { "name": "Gap 5", "statement": "Establish objective long-term complication denominators by balloon/stent and operator setting with independent causal adjudication.", "relevance": "Limits mechanism identification or scope." }, { "name": "Gap 6", "statement": "Audit supplements and correction bodies unavailable in this bounded source examination; do not convert access failures to negative findings.", "relevance": "Limits mechanism identification or scope." } ], "review_metadata": { "review_date": "2026-10-12", "reviewer": "Codex", "evidence_base_note": "69 primary reports; literature cutoff 2026-10-12; source examination UTC date 2026-10-12; bounded critical review, not exhaustive systematic review.", "literature_tools_available": true, "literature_tools_note": "Life Sciences Literature PubMed/Entrez, separately logged public original-body retrieval, and Consensus Pro browser searches. Provider output retained as observed browser text with citation-link mappings, or as previously exported connector documents where present. AI synthesis is not primary full-text verification. Consensus retrieved/included counts are not examined-primary counts. Scite monthly limit was reached earlier in this session; no new Scite query or incoming citation-context audit is claimed for these cases. Tool receipts record actual use. Supplementary discovery outputs do not earn primary-count credit. No independent blinded review.", "skill_version": "5.3", "validator_run": "PASS: exact archived HSEF v5.3 validator rerun after final sealing.", "validator_warnings_addressed": "No warnings.", "limits": "Bounded source-based critical review; no complete-paper/supplement audit, independent scientific peer review or blinded calibration. Revision cases retain original prose outside the three framework output blocks and have explicit correction logs." }, "is_calibration_entry": { "value": false, "entry_role": "not_calibration", "blind_graded": null, "completed_blinded_calibration": false, "expected_band_sealed_at": "", "target_sha256": "", "target_authorship": "not applicable", "target_author_saw_review": null, "future_run_status": "not prepared", "unblinded_reason": "The cases were selected because the user asked for historically promoted claims challenged by evidence. This selection context was visible; no blind calibration is claimed and no negative score was preregistered." }, "upper_ladder_check": { "final_level_below_zeta": true, "equivalents_considered": [ { "kind": "mendelian_randomization", "available": false, "why_not_sufficient": "Human sham-controlled therapeutic perturbations are feasible and present. Their clinical nulls do not support upward positive thresholds. Independent genetic instruments, robust early natural experiments or a selective sustained-target human clinical benefit were not verified. Local procedural injury has causal mechanical evidence, but broad risk frequency and universal clinical harm are not established by selected case reports." }, { "kind": "natural_experiment", "available": true, "why_not_sufficient": "Human sham-controlled therapeutic perturbations are feasible and present. Their clinical nulls do not support upward positive thresholds. Independent genetic instruments, robust early natural experiments or a selective sustained-target human clinical benefit were not verified. Local procedural injury has causal mechanical evidence, but broad risk frequency and universal clinical harm are not established by selected case reports." }, { "kind": "dose_response_across_populations", "available": false, "why_not_sufficient": "Human sham-controlled therapeutic perturbations are feasible and present. Their clinical nulls do not support upward positive thresholds. Independent genetic instruments, robust early natural experiments or a selective sustained-target human clinical benefit were not verified. Local procedural injury has causal mechanical evidence, but broad risk frequency and universal clinical harm are not established by selected case reports." }, { "kind": "withdrawal_rechallenge", "available": false, "why_not_sufficient": "Human sham-controlled therapeutic perturbations are feasible and present. Their clinical nulls do not support upward positive thresholds. Independent genetic instruments, robust early natural experiments or a selective sustained-target human clinical benefit were not verified. Local procedural injury has causal mechanical evidence, but broad risk frequency and universal clinical harm are not established by selected case reports." }, { "kind": "therapeutic_perturbation_hard_endpoint", "available": false, "why_not_sufficient": "Human sham-controlled therapeutic perturbations are feasible and present. Their clinical nulls do not support upward positive thresholds. Independent genetic instruments, robust early natural experiments or a selective sustained-target human clinical benefit were not verified. Local procedural injury has causal mechanical evidence, but broad risk frequency and universal clinical harm are not established by selected case reports." } ], "convergence_present": false, "cap_reapplied_to_convergent_set": false }, "provenance_header": { "sources_total": 69, "claims_total": 74, "claims_verified": 74, "claims_unverified": 0, "claims_contradicted": 0, "tier_a_sources": 69, "generated_by": "Codex; HSEF v5.3", "gate_passed": true }, "claims": [ { "id": "C1", "text": "PREMiSe phase2 randomized 19 patients to venoplasty or sham; no clinical benefit and no sustained prespecified hemodynamic success in the randomized phase. Lesion and relapse counts trended adversely without significant between-arm differences. Small pilot, incomplete target engagement and exploratory analyses do not establish causal disease exacerbation. Linked erratum details were not supplied in PubMed and remain unchecked.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 1 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C2", "text": "Canadian sham-controlled trial randomized 104 participants; primary MSQOL54 change and secondary clinical/MRI outcomes did not improve with venoplasty. Both arms had transient subjective improvement. One asymptomatic jugular dissection occurred after venoplasty. Only 60% planned power for the primary effect size and 48-week follow-up limit small/late effects. Serious adverse events occurred in 5 of 49 venoplasty and 1 of 55 sham participants; the blinded physician judged all six unrelated to the procedure, so they are not counted as procedural injury, but the arm imbalance is recorded.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 2 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:Methods:paragraph0, 0:Methods:paragraph4, 0:Methods:paragraph5, 0:Methods:paragraph6, 0:Methods:paragraph8, 1:Results:paragraph3, 1:Results:paragraph6, 1:Results:paragraph8, 1:Results:paragraph9, 1:Results:paragraph10. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C3", "text": "Brave Dreams randomized 115 RRMS patients; functional improvement and full-year MRI outcomes were not significantly better after angioplasty. Restored flow was observed in 38/71 treated and 14/37 sham participants; no procedure-attributed serious event occurred. Underrecruitment and incomplete engagement constrain an ideal-flow mechanism test. Favorable late MRI comparisons lost significance after multiplicity adjustment; clinical and MRI outcomes remain distinct.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 3 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph2, 1:Methods:paragraph3, 1:Methods:paragraph5, 1:Methods:paragraph8, 1:Methods:paragraph11, 1:Methods:paragraph12, 1:Methods:paragraph13, 1:Methods:paragraph14, 2:Results:paragraph0, 2:Results:paragraph3, 2:Results:paragraph14, 2:Results:paragraph20, 2:Results:paragraph21. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C4", "text": "Expanded Brave Dreams analysis added 15 progressive patients; treated participants were more often free of new MRI lesions, RR 1.42, 95% CI 1.00–2.01, p = 0.032. Favorable venographic anatomy showed stronger post hoc MRI associations. Same randomized parent as 29150995, no independent clinical efficacy replication. Correction 31896294 explicitly labels classification post hoc; discordant classifications were excluded. MRI movement does not establish disability benefit.", "carries_number": true, "load_bearing_for": [ "SC3" ], "source_ns": [ 4 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Materials and Methods:paragraph0, 1:Materials and Methods:paragraph12, 1:Materials and Methods:paragraph13, 1:Materials and Methods:paragraph15, 1:Materials and Methods:paragraph16, 2:Results:paragraph0, 2:Results:paragraph1, 2:Results:paragraph3, 2:Results:paragraph4. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C5", "text": "Pilot immediate-versus-delayed venoplasty study of 15 RRMS patients reported functional improvement against baseline and nonsignificant relapse/MRI trends, with 27% restenosis at one year. Small nonsham comparison and baseline contrasts cannot separate expectation, natural fluctuation and treatment effect. Abstract design is case-control despite PubMed RCT label; no complete body audit.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 5 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C6", "text": "Randomized wait-list study of 66 participants found no objective evoked-potential or upper-limb kinematic improvement, while selected composite/QOL measures favored immediate treatment. No sham blinding; reported odds-ratio confidence interval is internally inconsistent in the abstract and is not treated as a verified quantitative effect.", "carries_number": true, "load_bearing_for": [ "SC3" ], "source_ns": [ 6 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C7", "text": "Open-label treatment of 65 MS patients lowered venous pressure and reported improved RRMS functional, relapse-free and MRI measures against baseline. Jugular patency was 53% versus 96% for the azygos vein. Uncontrolled treatment with high restenosis and subtype differences does not establish clinical causality; presumed first-series overlap is grouped conservatively. Linked erratum details remain unavailable.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 7 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C8", "text": "Italian multicenter retrospective series of 462 treated patients found no significant disability improvement, relapses in 98 patients and 15 severe adverse events after treatment. No sham comparator and heterogeneous treatment; same parent as 23380649. Events occurring after treatment are not all established consequences of the procedure.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 8 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C9", "text": "British Columbia registry participants initially reported improvements after treatment, but these were not maintained at 24 months; self-reported complications were common enough to document a safety concern. Selection, recall, changing therapy and lack of blinded untreated controls prevent causal benefit/risk estimates.", "carries_number": true, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 9 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C10", "text": "Alberta cohort found disability, disease duration and progressive course associated with seeking out-of-country CCSVI procedures, directly identifying treatment-selection differences. A study of treatment-seeking selection does not estimate efficacy or procedural injury; it informs confounding rather than positive intervention tally.", "carries_number": false, "load_bearing_for": [ "SC3" ], "source_ns": [ 10 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C11", "text": "Retrospective follow-up of 45 RRMS patients found worse EDSS and more active MRI after venoplasty; 35.6% stopped disease-modifying treatment. Uncontrolled worsening, therapy discontinuation and indication confounding do not show angioplasty caused MS deterioration.", "carries_number": true, "load_bearing_for": [ "SC3" ], "source_ns": [ 11 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C12", "text": "Small treatment cohort found no EDSS/ESS benefit, only transient QOL improvement and some fatigue/heat changes; restenosis and partial in-stent thrombosis occurred. Unblinded outcomes and selective subjective improvement do not establish disability efficacy. Balloon and stent risks are not interchangeable.", "carries_number": false, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 12 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C13", "text": "Four treated cases reported early symptomatic and venographic improvement with no observed adverse events. Tiny uncontrolled case series cannot identify causal clinical benefit, durable patency or rare-event safety.", "carries_number": false, "load_bearing_for": [ "SC3", "SC4" ], "source_ns": [ 13 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C14", "text": "Self-selected cohort of 44 patients reported improved QOL despite no relapse-rate benefit, worse EDSS and new MRI activity in some participants. Subjective/objective discordance is informative, but uncontrolled worsening cannot be attributed solely to venoplasty.", "carries_number": true, "load_bearing_for": [ "SC3" ], "source_ns": [ 14 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C15", "text": "Follow-up of 45 treated patients found lower venous hemodynamic severity and modest baseline EDSS improvement; EDSS change did not differ between flow-responder groups. Post-treatment median-defined responders are not a prespecified causal subgroup; no sham comparator and p.746 responder contrast cannot validate mechanism mediation.", "carries_number": true, "load_bearing_for": [ "SC3" ], "source_ns": [ 15 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C16", "text": "Series of 495 procedures in 461 MS patients documented venous rupture, dissection and eight stent or treated-segment thromboses, alongside no short-term death or major bleeding. Rates are procedure-denominated and setting-specific, mixing stents and balloons. Direct vascular injury supports possible procedural harm but not universal fatality.", "carries_number": true, "load_bearing_for": [ "SC4" ], "source_ns": [ 16 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C17", "text": "Thirty-day series of 257 procedures in 240 patients documented venous thromboses, prolonged arrhythmias and two hospitalizations, including stress cardiomyopathy during retreatment. Short follow-up and mixed techniques limit general incidence; reported temporal arrhythmia does not by itself prove every systemic event is catheter-caused.", "carries_number": true, "load_bearing_for": [ "SC4" ], "source_ns": [ 17 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C18", "text": "Large procedural series recorded rupture requiring transfusion, groin bleeding requiring surgery, balloon-fragment retrieval and jugular thrombosis; complications clustered during earlier operator experience. Abstract has inconsistent patient denominators, so its exact incidence is not treated as verified. Mostly balloon treatment without jugular stenting maps a technique and learning-context boundary.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 18 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C19", "text": "Series of 107 procedures in 95 patients reported high technical success and three jugular thromboses, with no deaths within 30 days. Technical dilation success is not MS efficacy; short-term surveillance cannot exclude late injury. Linked correction concerns author spelling in the indexed notice.", "carries_number": true, "load_bearing_for": [ "SC4" ], "source_ns": [ 19 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C20", "text": "Italian series reported 15 serious events among 462 treated patients at variable intervals, including seven jugular thromboses and a myocardial-infarction death ten weeks later. Same parent as 23354606. Temporal events including pneumonia or myocardial infarction are not all causally attributed; correction 28072565 was linked but blocked to body access, so corrected numerical details remain unverified.", "carries_number": true, "load_bearing_for": [ "SC4" ], "source_ns": [ 20 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C21", "text": "A patient developed jugular thrombosis after balloon venoplasty without a stent despite anticoagulation, requiring surgical thrombectomy. Objective local mechanical complication supports a can-cause claim, not the frequency of injury or a causal MS-worsening estimate.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 21 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C22", "text": "Procedural series documented two thrombotic stent occlusions and surgical femoral venotomy to retrieve an angioplasty balloon. Mixed balloon/stent exposure and short observation do not yield one universal liberation-therapy risk; mechanical failures can be causally linked within their settings.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 22 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C23", "text": "Five referred patients after treatment abroad had complications including stent thrombosis, migration and catheter-related injury. Referral selection lacks a treated-population denominator; establishes examples of injury, not incidence across all providers.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 23 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C24", "text": "Case report documents stent displacement and thrombosis by imaging after repeated venous stenting, with subsequent worsening of disability. The paper discusses potential fatal embolism, not an observed fatal pulmonary embolus; disability deterioration has additional possible causes.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 24 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C25", "text": "Case report describes jugular stent thrombosis despite antithrombotic therapy, failed repeat intervention and later bypass graft occlusion. Specific device failure is observable; subjective symptom response does not establish MS disease modification or a general complication rate.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 25 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C26", "text": "Foundational study found abnormal Doppler patterns in all 65 MS patients and none of selected controls, with venographic stenoses in screen-positive patients. Ultrasound was blinded, but invasive venography knew diagnosis and used ultrasound-positive selection plus controls undergoing venography for other illnesses; this is association, not temporal or causal proof.", "carries_number": true, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 26 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:METHODS:paragraph0, 0:METHODS:paragraph3, 0:METHODS:paragraph4, 0:METHODS:paragraph6, 0:METHODS:paragraph9, 0:METHODS:paragraph22, 0:METHODS:paragraph23, 0:METHODS:paragraph24, 1:SELECTIVE VENOGRAPHY:paragraph0. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C27", "text": "Small 16-RRMS/8-control study associated venous severity with lower CSF flow. Cross-sectional physiology does not establish onset or treatment dependency; likely shared sample with 20351672, not independent mechanistic replication.", "carries_number": true, "load_bearing_for": [ "SC2" ], "source_ns": [ 27 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C28", "text": "Venographic patterns in 65 CCSVI-positive MS patients were related to disease onset and course categories. Selected cases without a comparable healthy denominator cannot show MS specificity or prospective temporal order; conservatively grouped with first 65-patient series.", "carries_number": true, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 28 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C29", "text": "CTEVD found CCSVI more frequently in MS than healthy controls, but substantial control positivity and higher progressive-course frequency. Partial association with poor specificity does not establish primary causation; clinical subset and related imaging reports share recruitment resources.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 29 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C30", "text": "CoSMo multicenter blinded local/central reading found similar low CCSVI prevalence in MS, other neurodegenerative diseases and healthy controls, with low positive agreement. Diagnostic negative result concerns specified criteria and adjudication, not every vascular abnormality. Rare positives and operator disagreement bound sensitivity claims.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 30 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C31", "text": "MS and controls showed similar ultrasound/venographic features; most venographed controls had at least 50% narrowing. Controls had other indications for venography and the MS cohort was small; common narrowing challenges specificity but does not by itself establish general-population prevalence.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 31 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C32", "text": "Masked multimodal Houston study found discordant ultrasound/MRV findings and no clinically meaningful venographic pressure gradients in the examined subset. Same parent as 23418024; selective invasive subset and supine pressure measurements limit broader physiology. Anatomical narrowing alone is not functionally important obstruction.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 32 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Subjects and methods:paragraph4, 1:Subjects and methods:paragraph5, 2:Results:paragraph4. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C33", "text": "Blinded Houston assessment of 206 MS and 70 non-MS subjects found no excess CCSVI or venous-velocity abnormality in MS. Single-center recruitment and fixed criteria restrict generalization; companion multimodal report is the same study unit.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 33 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 0:Subjects and Methods:paragraph0, 0:Subjects and Methods:paragraph6, 1:Results:paragraph3, 1:Results:paragraph8, 1:Results:paragraph9. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C34", "text": "Blinded Finnish study found poor observer agreement and small jugular calibre more often in longstanding MS than controls, with weaker differences in recent MS. Cross-sectional duration differences permit secondary change or ageing; calibre association is not MS-specific flow causality.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 34 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C35", "text": "Blinded study found no significant CCSVI case-control association while particular stenosis findings were more frequent in MS. Retains a positive anatomical result, but selective criterion differences and multiplicity do not validate the composite or causal mechanism.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 35 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C36", "text": "Blind-verified study found CCSVI in 30.9% of MS patients and 33.8% of controls; experienced, specifically trained operators showed variable estimates. Blinding was successful in cases but imperfect in controls; single-study null does not show no vascular pathology, while training alone does not restore MS specificity.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 36 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph0, 1:Methods:paragraph2, 1:Methods:paragraph10, 1:Methods:paragraph11, 2:Results:paragraph3, 2:Results:paragraph8, 2:Results:paragraph9. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C37", "text": "Blinded pediatric-onset MS study found no significant excess of CCSVI over controls. Small early-onset sample limits precision; nevertheless early disease can occur without detected composite abnormalities.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 37 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C38", "text": "Pediatric MR venography found venous anomalies at least as common in controls as childhood MS. Modest sample and imaging modality limit exclusion of subtle physiology; no proof of a necessary initiating venous lesion.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 38 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C39", "text": "Progressive MS case-control study found very few Doppler-positive cases and no relationship with disability; only one selected venographic participant had bilateral stenosis. Selective invasive confirmation and small positives limit sensitivity; absence of a detected abnormality is not exclusion of every vascular contribution.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 39 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C40", "text": "Blinded study of mild MS/CIS matched pairs found the CCSVI composite in only one control; anatomical jugular differences depended on stenosis definition. Definition sensitivity and low-disability selection constrain general scope; grouped conservatively with related mild/CIS flow study 24065289.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 40 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C41", "text": "Blinded M-mode-enhanced Doppler study found CCSVI in 59.8% of 112 MS patients and none of 67 controls. Important positive original remains contrary to other blinded studies; modality/protocol dependence and no prospective causal manipulation block universal specificity.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 41 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C42", "text": "Blinded ultrasound/MRV assessment found no significant composite CCSVI or patency difference between MS and controls. Composite criteria and modalities differed; a nonsignificant two-criterion frequency contrast is not proof of exact equivalence.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 42 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C43", "text": "Blinded revised-criteria Doppler study found no significant MS/control frequency difference. Small sample and alternative criteria limit sensitivity and equivalence inference.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 43 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C44", "text": "CIS study found some ultrasound positives but no venographic abnormalities in the seven positive patients who underwent confirmation. Verification restricted to screen positives and small numbers; challenges necessity at early disease, not all possible venous physiology.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 44 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C45", "text": "MS/healthy-control study found no significant CCSVI frequency difference or association with disability, course or progression. Modest cross-sectional sample cannot prove exact equivalence or establish a direction of causality.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 45 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C46", "text": "Sicilian population case-control study found higher CCSVI frequency in MS, particularly progressive and longer-duration disease; CIS was not significantly different. Observational case-control design, despite RCT metadata label. Duration and progression associations permit consequence/ageing and do not establish temporal initiation.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 46 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C47", "text": "Prospective repeat assessment found some baseline CCSVI positives becoming negative and new positives without intervention. Fluctuating detection challenges a fixed diagnostic target; follow-up observational study is not a randomized treatment trial despite indexing.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 47 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C48", "text": "Expert local and central blinded Doppler readings showed substantial overall agreement and high agreement for particular criteria. Both readers used shared acquired data; positive reader reproducibility is not independent acquisition reliability or proof of MS-specific causal obstruction.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 48 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph0, 1:Methods:paragraph7, 1:Methods:paragraph11, 2:Results:paragraph3, 2:Results:paragraph4, 2:Results:paragraph5. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C49", "text": "PREMiSe diagnostic pilot found structural anomalies by venography/IVUS in selected ultrasound-positive candidates. Same trial parent as 24975855; screen-negative patients lacked invasive testing and no healthy-control denominator. Differential verification prevents specificity inference.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 49 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C50", "text": "Blinded mild/CIS jugular-flow study found no significant adjusted flow differences by diagnosis in supine/sitting measurements. Related recruitment to 22961213 grouped conservatively; measured flow does not exhaust every vascular mechanism.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 50 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C51", "text": "Small multimodal pilot found all ten MS participants Doppler-positive and seven controls negative, with lower MRV sensitivity. Only MS participants had venographic confirmation; tiny sample and differential verification prevent robust general specificity.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 51 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C52", "text": "Doppler/MRV/phase-contrast assessment found no participant meeting two CCSVI criteria and no significant MS/control flow difference. Small study supports diagnostic challenge, not exact exclusion of subtle flow differences.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 52 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C53", "text": "Open-label series of 70 MS patients reported frequent extracranial ultrasound criteria. No healthy comparator or blinded discrimination; high prevalence alone cannot establish MS specificity.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 53 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C54", "text": "Training/retest study showed better operator agreement after CCSVI training and high same-operator repeat agreement. Small study with shared scanning system does not establish universal cross-center specificity; abstract confidence limits above one are not repeated as verified interval estimates.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 54 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C55", "text": "Multimodal Doppler/MRV combinations improved specificity for selected CCSVI definitions in MS/control samples. Substantial control positivity, shared recruitment resources and criterion selection limit out-of-sample generalization; not causal MS evidence.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 55 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C56", "text": "Case-control Doppler study found substantial overlap of venous criteria and mostly similar flow. Criterion-specific calibre differences are not a coherent causal obstruction or proof of no vascular role.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 56 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C57", "text": "Hydration challenge in 16 people changed CCSVI diagnostic classification, with most dehydrated positives losing status after fluid intake. Direct physiological sensitivity of measurement does not prove every positive diagnosis artifactual or test MS disease modification.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 57 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C58", "text": "Retrospective venography in 353 patients found venous severity uncorrelated with disease duration. A lack of duration correlation does not prove congenital causation; selected treated/detected cases do not establish temporal precedence.", "carries_number": true, "load_bearing_for": [ "SC2" ], "source_ns": [ 58 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C59", "text": "MS/control Doppler study reported high CCSVI prevalence associated strongly with age and poorly with clinical variables. Age-dependent association and diagnostic heterogeneity permit vascular ageing rather than primary MS causality.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 59 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C60", "text": "Blinded study found no association between CCSVI classification and other chronic venous disease. Phenotype-specific negative association does not test MS therapeutic benefit or directly disprove brain venous effects.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 60 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C61", "text": "CTEVD clinical analysis associated CCSVI with progressive status but not broadly with disability or course severity. Same parent as 21490322; selected nominal associations and shared measures are not independent causal lines.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 61 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C62", "text": "Six-center series reported high CCSVI prevalence and associations with progressive course and disability, with large center variation. No healthy-control denominator; site variation, age and duration confounding prevent specificity and primary-driver inference.", "carries_number": false, "load_bearing_for": [ "SC1", "SC2" ], "source_ns": [ 62 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C63", "text": "Perfusion study found reduced cerebral blood volume/flow with CCSVI in MS and non-MS groups, while disability related to a different transit-time measure. Cross-sectional perfusion and nonspecific vascular effects do not establish MS-specific inflammation/progression causality.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 63 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C64", "text": "Brain MRI analysis found no convincing CCSVI association with conventional lesion or atrophy measures. Cross-sectional analysis cannot exclude a small longitudinal mechanism; related cohort resources do not form wholly independent evidence.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 64 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C65", "text": "Small 16-RRMS/8-control susceptibility MRI study associated iron measures with venous hemodynamic severity. Iron-sensitive imaging is a proxy and cross-sectional association cannot predict progression causally; grouped with 20018140.", "carries_number": true, "load_bearing_for": [ "SC2" ], "source_ns": [ 65 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C66", "text": "Susceptibility venography associated reduced vessel visibility with CCSVI in MS. Visibility depends on metabolism, blood oxygenation and imaging; does not directly demonstrate pressure obstruction or cause of MS.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 66 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C67", "text": "Chronic jugular ligation in rats produced iron deposition and reactive gliosis, but no demyelination, axonal loss, inflammation or neurological weakness after eight months. Positive vascular tissue effects remain real. Severe artificial ligation and collateral anatomy differ from human CCSVI; this is a scoped sufficiency challenge, not proof that all vascular roles in MS are absent.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 67 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C68", "text": "Blinded Canadian catheter-venography study found greater-than-50% narrowing similarly common in MS, unaffected siblings and unrelated controls; ultrasound poorly identified such narrowing. Anatomical narrowing is not validated pathological obstruction; incomplete invasive observations and fixed definitions bound generalization.", "carries_number": true, "load_bearing_for": [ "SC1" ], "source_ns": [ 68 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "C69", "text": "MRI companion study found extracranial narrowing common across MS, sibling and unrelated-control groups, with poor interreader and MRV/venography agreement. Same diagnostic parent as 24119384; different imaging readout adds assay information rather than independent population replication.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 69 ], "verification": "verified", "verified_against": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "verified_on": "2026-10-12", "note": "" }, { "id": "CSC1", "text": "Initial associations reach at most Β, and the literal specificity/reproducibility claim is downgraded once to Α because blinded multicenter and sibling-controlled originals show common narrowing without MS specificity and unstable/operator-dependent composite diagnosis. Positive M-mode and trained-reader originals are retained; the result is about the universal composite, not the existence of real venous lesions.", "carries_number": false, "load_bearing_for": [ "SC1" ], "source_ns": [ 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 62, 68, 69 ], "verification": "verified", "verified_against": "Synthesis of examined primary result/limit cards; framework level is adjudication.", "verified_on": "2026-10-12", "note": "" }, { "id": "CSC2", "text": "Iron/gliosis after rat ligation and human CSF/perfusion associations support a mechanistic starting ceiling Γ. Early MS/CIS without confirmed CCSVI and ligation without inflammatory demyelination challenge the necessary/sufficient initiating chain: one scoped causal-pattern downgrade gives Β. Artificial exposure, limited timing and detection prevent a universal statement that vascular biology cannot affect MS.", "carries_number": false, "load_bearing_for": [ "SC2" ], "source_ns": [ 26, 27, 28, 29, 32, 34, 37, 38, 39, 40, 44, 45, 46, 49, 50, 58, 59, 61, 62, 63, 64, 65, 66, 67 ], "verification": "verified", "verified_against": "Synthesis of examined primary result/limit cards; framework level is adjudication.", "verified_on": "2026-10-12", "note": "" }, { "id": "CSC3", "text": "Flow/pressure responses and the positive expanded Brave Dreams MRI finding justify considering Γ. The same trial did not show clinical functional benefit, and independent Canadian/PREMiSe sham comparisons failed to confirm the uncontrolled subjective response. One parsimonious-alternative falsification downgrade (expectation/regression and nonspecific response observed in sham) yields Β for clinical benefit. Incomplete target engagement means a complete mechanism-blocking falsification is not claimed; the positive MRI finding remains a research lead.", "carries_number": false, "load_bearing_for": [ "SC3" ], "source_ns": [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ], "verification": "verified", "verified_against": "Synthesis of examined primary result/limit cards; framework level is adjudication.", "verified_on": "2026-10-12", "note": "" }, { "id": "CSC4", "text": "Objective local thrombosis after balloon treatment, thrombosed/migrated stents and procedural vessel/device injury demonstrate that this intervention can cause harm in defined clinical settings. Ε preserves mapped technique/operator and serious-event boundaries; uncontrolled delayed systemic events and selected referrals cannot supply a universal causal incidence. Clinical balloon-only RCTs reported few local complications and no procedure-related serious adverse events.", "carries_number": false, "load_bearing_for": [ "SC4" ], "source_ns": [ 1, 2, 3, 5, 7, 8, 9, 12, 13, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 ], "verification": "verified", "verified_against": "Synthesis of examined primary result/limit cards; framework level is adjudication.", "verified_on": "2026-10-12", "note": "" }, { "id": "CH", "text": "Sham-controlled venoplasty has not demonstrated MS disability benefit; a positive MRI reanalysis remains a bounded lead, while objective vascular and device complications establish that treatment can cause harm.", "carries_number": false, "load_bearing_for": [ "SC3" ], "source_ns": [ 2, 3, 4, 21, 22 ], "verification": "verified", "verified_against": "Bounded synthesis of examined sources; score is adjudication.", "verified_on": "2026-10-12", "note": "" } ], "citation_ledger": [ { "n": 1, "citation": "Siddiqui AH, Zivadinov R, Benedict RH et al. Prospective randomized trial of venous angioplasty in MS (PREMiSe). Neurology. 2014.", "tier": "A", "kind": "rct", "pmid": "24975855", "doi": "10.1212/WNL.0000000000000638", "url": "https://pubmed.ncbi.nlm.nih.gov/24975855/", "status_flags": [ "ErratumIn: PMID not supplied in the PubMed record" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PREMiSe-NCT01450072", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C1", "CSC3", "CSC4" ] }, { "n": 2, "citation": "Traboulsee AL, Machan L, Girard JM et al. Safety and efficacy of venoplasty in MS: A randomized, double-blind, sham-controlled phase II trial. 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Efficacy and Safety of Extracranial Vein Angioplasty in Multiple Sclerosis: A Randomized Clinical Trial. JAMA neurology. 2018.", "tier": "A", "kind": "rct", "pmid": "29150995", "doi": "10.1001/jamaneurol.2017.3825", "url": "https://pubmed.ncbi.nlm.nih.gov/29150995/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "BraveDreams-NCT01371760", "access_depth": "full_text_partial", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. Selected body sections: 1:Methods:paragraph2, 1:Methods:paragraph3, 1:Methods:paragraph5, 1:Methods:paragraph8, 1:Methods:paragraph11, 1:Methods:paragraph12, 1:Methods:paragraph13, 1:Methods:paragraph14, 2:Results:paragraph0, 2:Results:paragraph3, 2:Results:paragraph14, 2:Results:paragraph20, 2:Results:paragraph21. 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European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. 2012.", "tier": "A", "kind": "observational", "pmid": "21839654", "doi": "10.1016/j.ejvs.2011.03.035", "url": "https://pubmed.ncbi.nlm.nih.gov/21839654/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21839654", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C5", "CSC3", "CSC4" ] }, { "n": 6, "citation": "Napoli V, Berchiolli R, Carboncini MC et al. Percutaneous Venous Angioplasty in Patients with Multiple Sclerosis and Chronic Cerebrospinal Venous Insufficiency: A Randomized Wait List Control Study. Annals of vascular surgery. 2020.", "tier": "A", "kind": "rct", "pmid": "31445091", "doi": "10.1016/j.avsg.2019.05.018", "url": "https://pubmed.ncbi.nlm.nih.gov/31445091/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID31445091", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C6", "CSC3" ] }, { "n": 7, "citation": "Zamboni P, Galeotti R, Menegatti E et al. A prospective open-label study of endovascular treatment of chronic cerebrospinal venous insufficiency. Journal of vascular surgery. 2009.", "tier": "A", "kind": "primary", "pmid": "19958985", "doi": "10.1016/j.jvs.2009.07.096", "url": "https://pubmed.ncbi.nlm.nih.gov/19958985/", "status_flags": [ "ErratumIn: PMID not supplied in the PubMed record" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "FIRST65-possible-overlap", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C7", "CSC3", "CSC4" ] }, { "n": 8, "citation": "Ghezzi A, Annovazzi P, Cocco E et al. Endovascular treatment of CCSVI in patients with multiple sclerosis: clinical outcome of 462 cases. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. 2013.", "tier": "A", "kind": "primary", "pmid": "23354606", "doi": "10.1007/s10072-013-1300-5", "url": "https://pubmed.ncbi.nlm.nih.gov/23354606/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "ITALIAN462", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C8", "CSC3", "CSC4" ] }, { "n": 9, "citation": "Sadovnick AD, Yee IM, Attwell-Pope K et al. Patient-Reported Benefits of Extracranial Venous Therapy: British Columbia CCSVI Registry. The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques. 2017.", "tier": "A", "kind": "primary", "pmid": "28270250", "doi": "10.1017/cjn.2017.27", "url": "https://pubmed.ncbi.nlm.nih.gov/28270250/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID28270250", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C9", "CSC3", "CSC4" ] }, { "n": 10, "citation": "Metz LM, Greenfield J, Marrie RA et al. Medical Tourism for CCSVI Procedures in People with Multiple Sclerosis: An Observational Study. The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques. 2016.", "tier": "A", "kind": "primary", "pmid": "26891024", "doi": "10.1017/cjn.2015.350", "url": "https://pubmed.ncbi.nlm.nih.gov/26891024/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID26891024", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C10", "CSC3" ] }, { "n": 11, "citation": "Alroughani R, Lamdhade S, Thussu A. Endovascular treatment of chronic cerebrospinal venous insufficiency in multiple sclerosis: a retrospective study. The International journal of neuroscience. 2013.", "tier": "A", "kind": "primary", "pmid": "23301864", "doi": "10.3109/00207454.2012.759569", "url": "https://pubmed.ncbi.nlm.nih.gov/23301864/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23301864", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C11", "CSC3" ] }, { "n": 12, "citation": "Kostecki J, Zaniewski M, Ziaja K et al. An endovascular treatment of Chronic Cerebro-Spinal Venous Insufficiency in multiple sclerosis patients - 6 month follow-up results. Neuro endocrinology letters. 2011.", "tier": "A", "kind": "primary", "pmid": "21876515", "doi": "", "url": "https://pubmed.ncbi.nlm.nih.gov/21876515/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21876515", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C12", "CSC3", "CSC4" ] }, { "n": 13, "citation": "Kipshidze N, Rukhadze I, Archvadze A et al. Endovascular treatment of patients with chronic cerebrospinal venous insufficiency and multiple sclerosis. Georgian medical news. 2011.", "tier": "A", "kind": "primary", "pmid": "22155803", "doi": "", "url": "https://pubmed.ncbi.nlm.nih.gov/22155803/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22155803", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C13", "CSC3", "CSC4" ] }, { "n": 14, "citation": "Zagaglia S, Balestrini S, Perticaroli E et al. Percutaneous transluminal angioplasty for chronic cerebrospinal venous insufficiency in multiple sclerosis: dichotomy between subjective and objective outcome scores. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. 2013.", "tier": "A", "kind": "primary", "pmid": "23660636", "doi": "10.1007/s10072-013-1450-5", "url": "https://pubmed.ncbi.nlm.nih.gov/23660636/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23660636", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C14", "CSC3" ] }, { "n": 15, "citation": "Scalise F, Novelli E, Farina M et al. Venous Hemodynamic Insufficiency Severity Score variation after endovascular treatment of chronic cerebrospinal venous insufficiency. Phlebology. 2015.", "tier": "A", "kind": "primary", "pmid": "24531803", "doi": "10.1177/0268355514524193", "url": "https://pubmed.ncbi.nlm.nih.gov/24531803/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID24531803", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C15", "CSC3" ] }, { "n": 16, "citation": "Petrov I, Grozdinski L, Kaninski G et al. Safety profile of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis. Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists. 2011.", "tier": "A", "kind": "primary", "pmid": "21679067", "doi": "10.1583/11-3440.1", "url": "https://pubmed.ncbi.nlm.nih.gov/21679067/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID21679067", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C16", "CSC4" ] }, { "n": 17, "citation": "Mandato KD, Hegener PF, Siskin GP et al. Safety of endovascular treatment of chronic cerebrospinal venous insufficiency: a report of 240 patients with multiple sclerosis. Journal of vascular and interventional radiology : JVIR. 2012.", "tier": "A", "kind": "primary", "pmid": "22088659", "doi": "10.1016/j.jvir.2011.09.019", "url": "https://pubmed.ncbi.nlm.nih.gov/22088659/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID22088659", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C17", "CSC4" ] }, { "n": 18, "citation": "Lupattelli T, Bellagamba G, Righi E et al. Feasibility and safety of endovascular treatment for chronic cerebrospinal venous insufficiency in patients with multiple sclerosis. Journal of vascular surgery. 2013.", "tier": "A", "kind": "primary", "pmid": "23948669", "doi": "10.1016/j.jvs.2013.05.108", "url": "https://pubmed.ncbi.nlm.nih.gov/23948669/", "status_flags": [ "none_found" ], "opened": true, "opened_on": "2026-10-12", "status_checked_on": "2026-10-12", "study_id": "PMID23948669", "access_depth": "abstract_metadata", "access_note": "Bounded original primary abstract Results/Findings/conclusion passages and linked-status metadata examined; no complete-abstract audit asserted. No complete-paper or supplement audit claimed.", "carries_claims": [ "C18", "CSC4" ] }, { "n": 19, "citation": "Ferra H, Behrens G, Tumer Y et al. Endovascular diagnosis and management of chronic cerebrospinal venous insufficiency: retrospective analysis of 30-day morbidity and mortality in 95 consecutive patients. AJR. 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The original body was unavailable this run: abstract-only attribution is explicit, and neither ideal mechanism ablation nor established worsening is claimed.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/24975855/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-17-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-6-6500.json" ], "body_receipts": [] }, { "pmid": "30266886", "doi": "10.1212/WNL.0000000000006423", "source_type": "primary study report", "study_group": "PMID30266886", "access_depth": "full_text_partial", "consensus_aspect": "Missing Canadian original and primary clinical endpoint", "result_comparison": "Consensus omitted this requested original and substituted a pooled review. Original Methods/Results were examined: 104 randomized participants, primary MSQOL54 change, secondary disability/relapse/MRI, independent assignment and blinded assessors. Both groups transiently improved; no clinical benefit separated. The planned primary-effect power was only 60%, so small or delayed effects remain bounded rather than excluded.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/30266886/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-17-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-6-6500.json" ], "body_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\30266886-s0-p0-4-5-6-8.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\30266886-s1-p3-6-8-9-10.json" ] }, { "pmid": "29150995", "doi": "10.1001/jamaneurol.2017.3825", "source_type": "primary study report", "study_group": "BraveDreams-NCT01371760", "access_depth": "full_text_partial", "consensus_aspect": "Clinical/MRI hierarchy and actual incomplete engagement", "result_comparison": "Consensus correctly retained 115 RRMS participants and 38/71 restored-flow treated patients. Original Methods show co-primary functional and MRI endpoints, early trial closure at 115 versus amended target of 300, intention-to-treat and multiplicity adjustment. Original Results include restored flow in 14/37 sham participants and favorable late nominal MRI comparisons that lost adjusted significance. These details limit a complete-blockade interpretation while preserving the negative clinical finding.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/29150995/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-17-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-6-6500.json" ], "body_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\29150995-s1-p2-3-5-8-11-12-13-14.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\29150995-s2-p0-3-14-20-21.json" ] }, { "pmid": "31735108", "doi": "10.1177/1526602819890110", "source_type": "primary study report", "study_group": "BraveDreams-NCT01371760", "access_depth": "full_text_partial", "consensus_aspect": "A genuine positive MRI lead from the same parent", "result_comparison": "Consensus correctly identified the expanded 130-patient analysis and positive lesion-free result, but the evidence is one Brave Dreams parent, not clinical replication. Examined original Methods/Results show added progressive patients, post hoc anatomy grading, exclusion of discordant classifications and positive MRI comparisons. The examined 2020 correction explicitly changes secondary-analysis terminology to post hoc. No numerical-effect change is stated in that correction. Prospective independent clinical validation remains the relevant gap.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/31735108/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-17-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-6-6500.json" ], "body_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\31735108-s1-p0-12-13-15-16.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\31735108-s2-p0-1-3-4.json" ] }, { "pmid": "24119384", "doi": "10.1016/S0140-6736(13)61747-X", "source_type": "primary study report", "study_group": "CANADIAN-DIAGNOSTIC", "access_depth": "abstract_metadata", "consensus_aspect": "Diagnostic-control originals extend the provider coverage", "result_comparison": "Consensus used initial diagnostic papers and an early CIS original, omitting the key sibling-controlled venography study. Its bounded original abstract shows greater-than-50% narrowing similarly common in MS, unaffected siblings and unrelated controls; ultrasound poorly identified catheter narrowing. The companion MRV report is grouped with this parent rather than counted as independent population replication. Anatomical narrowing alone does not establish pathological obstruction.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/24119384/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-67-69-6500.json" ], "body_receipts": [] }, { "pmid": "28721810", "doi": "10.2174/1567202614666170718095203", "source_type": "primary study report", "study_group": "PMID28721810", "access_depth": "full_text_partial", "consensus_aspect": "Reader reproducibility is a retained positive, with its unit stated", "result_comparison": "Consensus summarized diagnostic reproducibility mainly negatively. The examined original Methods/Results retain substantial agreement between expert local and central readers, particularly for selected criteria. Shared acquired recordings differ from independently reproduced acquisition/physiology; positive reader agreement therefore survives alongside the cross-center specificity challenge.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/28721810/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-34-51-6500.json" ], "body_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\28721810-s1-p0-7-11.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\body-presentation-receipts\\28721810-s2-p3-4-5.json" ] }, { "pmid": "21803799", "doi": "10.1258/phleb.2011.011052", "source_type": "primary study report", "study_group": "PMID21803799", "access_depth": "abstract_metadata", "consensus_aspect": "Balloon-only objective harm without a population-rate claim", "result_comparison": "Consensus appropriately found the jugular-thrombosis case. Its bounded original abstract supports local thrombosis after balloon venoplasty without stenting despite anticoagulation, requiring surgery. This shows possible mechanical injury; it supplies neither a general incidence nor proof that every postprocedure clinical deterioration was caused by treatment.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/21803799/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-25-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-34-6500.json" ], "body_receipts": [] }, { "pmid": "23249660", "doi": "10.14712/23362936.2015.12", "source_type": "primary study report", "study_group": "PMID23249660", "access_depth": "abstract_metadata", "consensus_aspect": "Potential fatal embolism is not an observed death", "result_comparison": "Consensus listed fatal pulmonary-embolus hazards among catastrophically attributed stent outcomes. The examined original case reports imaging-confirmed displacement/thrombosis and discusses a potential future fatal embolic event; no fatal pulmonary embolus was observed in this case. Device harm remains real, but speculative hazards are distinguished from observed fatalities.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/23249660/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-25-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-34-6500.json" ], "body_receipts": [] }, { "pmid": "23380649", "doi": "10.1177/1352458513475491", "source_type": "primary study report", "study_group": "ITALIAN462", "access_depth": "abstract_metadata", "consensus_aspect": "Events after treatment require attribution and correction bounds", "result_comparison": "Consensus safety wording overgeneralized causal systemic harms. This original reports serious events at variable post-treatment intervals in the same 462-person parent as the clinical report; seven jugular thromboses are mechanically plausible, while a myocardial-infarction death ten weeks later and other systemic events are not all established procedure-caused. The linked harm correction body was blocked (HTTP 403), so corrected numerical details remain unverified. Canadian original-body adjudication separately found its six serious events unrelated, while retaining one local jugular dissection.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/23380649/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-25-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-17-34-6500.json" ], "body_receipts": [] }, { "pmid": "31445091", "doi": "10.1016/j.avsg.2019.05.018", "source_type": "primary study report", "study_group": "PMID31445091", "access_depth": "abstract_metadata", "consensus_aspect": "A selected timeline cannot establish a global 2026 research hiatus", "result_comparison": "Consensus claimed randomized tests ceased entirely and a complete hiatus through late 2026 based on 2019/2020 sources. The selected original wait-list trial provides a completed objective-null/subjective-mixed milestone, not proof of global absence of later trials. Our search-bounded momentum judgment names completed original programs and explicitly makes no universal current registry or regulatory-status claim.", "original_source": "https://pubmed.ncbi.nlm.nih.gov/31445091/", "source_examination_receipts": [ "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-17-6500.json", "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\examinations\\original-0-6-6500.json" ], "body_receipts": [] } ], "grade_changed": false, "grade_change_note": "Source-based adjudication; no independent blinded regrade claimed.", "raw_receipts": [ { "path": "deliverables\\hsef_v53_remaining_priority_20_22_2026-10-12\\ccsvi-ms-liberation\\consensus-browser-2026-10-12.json", "sha256": "155bfff3ee064b754271bbd00c3983d71f52bb4fb52cea07872a66684493e409" } ], "independent_blinded_audit": false, "cutoff": "2026-10-12", "completed_utc": "2026-10-12T21:01:19.129057+00:00", "conclusion": "Endpoint hierarchy, experimental scope and original-source limits determine the evidence cards; provider wording does not override them." } }