{
  "slug": "xist-smart-scaffold",
  "round": 2,
  "date": "2026-10-14",
  "authoring_model": "Sol 6.1",
  "reviewer": "Claude Opus 5.5 (Anthropic)",
  "level_before": "Γ",
  "level_after": "Γ",
  "confidence_before": "Moderate",
  "confidence_after": "Moderate",
  "role_before": "epiphenomenon",
  "role_after": "epiphenomenon",
  "pmids_checked": 65,
  "pmids_failed": 0,
  "claims_spot_checked": 10,
  "validator": "FAIL (v5.lay_summary only, pre-existing)",
  "findings": [
    {
      "id": "X-1",
      "severity": "Major",
      "location": "Evidence and causal interpretation; evidence card [61]",
      "original": "native trophoblast formaldehyde-RIP in a 2025 Airn/Xist comparison ... Different assay chemistry and lineages",
      "corrected": "formaldehyde-RIP on ectopically expressed transgenes in mouse embryonic stem cells, the same cell system as the rG4 work; separator restated as assay chemistry and construct context",
      "evidence": "PMID 40118040 (Trotman, Mol Cell 2025) used an ectopic locus in mouse embryonic stem cells (MeSH: Mouse Embryonic Stem Cells); no trophoblast system. Comparator PMID 38759625 is also mESC, so the asserted lineage difference did not exist",
      "type": "misattribution"
    },
    {
      "id": "X-2",
      "severity": "Major",
      "location": "Consensus provenance reconciliation — 9 October 2026",
      "original": "The earlier adversarial approval refers to its original edition",
      "corrected": "No earlier adversarial approval exists for this case",
      "evidence": "no approval section/banner/line in any edition incl. hsef_v53_popularity_ranks_46_50_2026-10-09 copy; regression introduced by the Oct 9 revision",
      "type": "false_approval_reference"
    },
    {
      "id": "X-3",
      "severity": "Minor",
      "location": "scorecard final_score.confidence_rationale (x3)",
      "original": "density, heterogeneous controls and incomplete access set the confidence",
      "corrected": "restated as evidence density and reproducibility; access depth explicitly excluded",
      "evidence": "hsef-framework.md confidence band; lead confidence-band policy 2026-10-14. Band re-derived: Moderate stands on platform-dependent contradictions, labelling assumptions, ectopic human systems",
      "type": "confidence_band_rationale"
    },
    {
      "id": "X-4",
      "severity": "Editorial",
      "location": "Falsification and pitfalls",
      "original": "PMIDs34813726,35301492,26195790",
      "corrected": "PMIDs 34813726, 35301492, 26195790",
      "evidence": "glued-numeral rendering defect; all three PMIDs verified",
      "type": "rendering_defect"
    }
  ],
  "rejected_findings": [
    {
      "item": "causal role 'epiphenomenon'",
      "reason": "explicitly scoped to the registered continuous dual-PRC tether (framework step 2), not to Xist or the Polycomb effector arm; defensible judgement call"
    },
    {
      "item": "headline Γ / primary-subclaim rule",
      "reason": "SC2 named primary before scoring; SC1 Η reported separately; alternatives reported"
    },
    {
      "item": "Best-supported rival renderer artifact",
      "reason": "rank 1 is a non-nominal model; the nominal smart-scaffold model ranks 5"
    },
    {
      "item": "momentum value",
      "reason": "'Mechanistic only' with compliant artifact; no 'Decisive work underway' claim"
    },
    {
      "item": "REVIEWER NOTES vs spliced Consensus section",
      "reason": "notes record a positive Consensus contribution; no 'no Consensus work' claim"
    },
    {
      "item": "Zhao RepA attribution",
      "reason": "matches PMID 18974356 exactly"
    }
  ],
  "propagate_to": [],
  "divergent_copies": [
    "hsef_v53_popularity_ranks_46_50_2026-10-09/xist-smart-scaffold/xist-smart-scaffold.review.md"
  ],
  "approval": "Approved as revised"
}