{
 "slug": "metformin-geroprotection",
 "round": 2,
 "date": "2026-10-14",
 "authoring_model": "Sol 6.1",
 "adversarial_reviewer": "Claude Opus 5.5 (Anthropic)",
 "canonical_path": "consensus_consistency_audit_2026-10-09/revised/metformin-geroprotection/metformin-geroprotection.review.md",
 "level_before": "Γ",
 "level_after": "Γ",
 "confidence_before": "Moderate",
 "confidence_after": "Moderate",
 "role_before": "epiphenomenon",
 "role_after": "epiphenomenon",
 "counts": {
  "critical": 0,
  "major": 0,
  "minor": 3,
  "editorial": 0,
  "distinct_string_corrections": 3,
  "occurrences_replaced": 4
 },
 "pmids_checked": 61,
 "pmids_failed": 0,
 "retraction_flags": 0,
 "extra_records_introduced_by_revision_verified": [
  "42023167",
  "33428709",
  "36281624",
  "42620010"
 ],
 "claims_spot_checked": 12,
 "collective_author_bug_present": false,
 "validator": {
  "stored_report_v2_3_ok": true,
  "rerun_with_bundled_v5_4": "1 FAIL (v5.lay_summary, v5.4-only check on a v5.3 review), 0 warn, 31 pass",
  "output": "validator.txt"
 },
 "findings": [
  {
   "id": 1,
   "severity": "Minor",
   "class": "internal-consistency/regression",
   "location": "REVIEWER NOTES",
   "old": "No independent blind grading, Consensus, Scite or independent scientific peer review was performed.",
   "new": "No independent blind grading, Consensus, Scite or independent scientific peer review was performed for the original review; the dated 9 October 2026 Consensus consistency validation above is a later provenance supplement and is not an independent blinded adjudication.",
   "evidence": "The 2026-10-09 revision inserted a Consensus consistency validation section while the preserved REVIEWER NOTES still denied any Consensus work, contradicting the same document. The pre-audit edition had no such contradiction.",
   "is_regression": true
  },
  {
   "id": 2,
   "severity": "Minor",
   "class": "rendering",
   "location": "Source-specific evidence cards [12] (PMID 19878986) and [14] (PMID 9742977)",
   "old": "ErratumIn: PMIDnot supplied.",
   "new": "Erratum in: PMID not supplied.",
   "occurrences": 2,
   "evidence": "Known lost-space rendering defect; the erratum identifiers are not available from the PubMed metadata consulted, so the field's meaning is preserved rather than filled in."
  },
  {
   "id": 3,
   "severity": "Minor",
   "class": "rendering/empty-DOI",
   "location": "REFERENCES #14 (PMID 9742977)",
   "old": "DOI: . Access: abstract_metadata.",
   "new": "Access: abstract_metadata.",
   "evidence": "PubMed holds no DOI for this 1998 Lancet record."
  }
 ],
 "revision_block_verification": {
  "result": "accurate; no substantive regression",
  "checked": [
   "METFORAGING PMID 42023167: 40 randomised 19/21, 35 completers at 96 weeks, PhenoAge EAA -1.02 (95% CI -5.30 to 3.26, p=0.627)",
   "Parish & Swindell PMID 36281624: no significant overall lifespan effect in mice or nematodes; live-OP50 worm subgroup signal",
   "Musi medRxiv PMID 42620010: 145 randomised; year-1 Fried deterioration attributable to the weight-loss item; frailty index -0.006 +/- 0.0026 per year, p=0.0222",
   "DPP/DPPOS frailty PMID 33428709 identity and context"
  ],
  "observation": "The block omits that the same preprint reports reduced epigenetic age on two clocks - an omission of biomarker evidence the review discounts elsewhere, not a misstatement."
 },
 "rejected_findings": [
  "Aggregation primary-subclaim with SC3 named; alternatives weakest-link Γ and scope-matched Γ both correct.",
  "Causal role 'epiphenomenon' correctly derived at step 2.",
  "Momentum 'Mechanistic only' carries its artifact (PMID 39270656, PMID 37675817).",
  "Causal tally 21 matches the 21 printed inventory items and the score card.",
  "Reference titles #30 (PMID 29027899) and #42 (PMID 33953705) differ from PubMed only by dropped italics.",
  "Reference #14's absent author field reflects PubMed, which holds no author list for that record.",
  "v5.lay_summary validator FAIL is a v5.4-only check on a v5.3 review."
 ],
 "residual_limitations": [
  "Only 3 of 61 reports examined at partial-body depth (PMID 23900241, 27312235, 31557380) - exactly the ones whose load-bearing claims need full text.",
  "Could not re-derive from the consulted records: the '141 ITT' figure and the BMI-adjusted frailty-index estimate in the medRxiv preprint, and the endpoint hierarchy attributed to protocol DOI 10.1093/gerona/glz069.",
  "Erratum identifiers for PMID 19878986 and PMID 9742977 remain unresolved."
 ],
 "divergent_copies_left_untouched": [
  "hsef_v53_remaining_priority_01_05_2026-10-09/metformin-geroprotection/metformin-geroprotection.review.md"
 ],
 "propagate_to": [],
 "consensus_question": "In adults without diabetes, does metformin improve a prespecified physical-function or multimorbidity healthspan endpoint in a randomized trial, independently of weight loss and diabetes prevention?",
 "sha256_review_md_after": "3e25e64bd4f983ea61ef2ea09ff5bf9aa9ea2482bddeb83ce0786f3bca44a754",
 "bytes_review_md_after": 88326
}