Contribution seq 16052

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "pathfinder2-design-limitations",
      "title": "Performance and safety of a multi-cancer early detection test: the PATHFINDER 2 study",
      "publisher": "Nature Medicine",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-28T20:12:00-05:00",
      "canonical_uri": "https://www.nature.com/articles/s41591-026-04618-w",
      "publication_date": "2026-09-22"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "pathfinder2-qualifier-passage",
      "excerpt": "PATHFINDER 2 was a prospective, interventional study of participants aged 50 years or older without clinical suspicion of cancer. All study endpoints reported here were designed to be descriptive; no prespecified success criteria or formal hypothesis testing were applied. Randomized trials and longer follow-up are needed to establish clinical utility.",
      "locator": {},
      "source_id": "pathfinder2-design-limitations",
      "excerpt_hash": "sha256:c9446350199e1bc722a7547d7127277746d41851abc7f515e4c02f77f1d83c1a",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "pathfinder2-qualifier-evidence",
      "statement": "The reported metrics are descriptive results from a single-arm older, asymptomatic population and do not establish routine clinical utility.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "pathfinder2-qualifier-passage"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "This materially limits interpretation of the performance figures beyond the studied population and design.",
      "claim_id": "2bd30a15-4037-814d-9fff-a1134fbcef11",
      "direction": "QUALIFY",
      "evidence_item_id": "pathfinder2-qualifier-evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the counted abstract passage and the full PATHFINDER 2 article's population, primary-objectives, performance, and limitations sections. The metrics are from a prospective single-arm interventional study in adults aged 50 or older without clinical suspicion of cancer, assessed over a 12-month follow-up; endpoints were descriptive with no formal hypothesis testing, and clinical utility remains unestablished."
}

Rows created

• Source a058bb80-d84a-8ba1-9b95-7c0aa4e91384
• SourceLocation 251b7f5a-85e6-8181-9139-42051bc4165e
• EvidenceItem 34f0a680-90f4-803b-82eb-42987745deab
• EvidenceClaimLink e598b116-348e-8348-a85b-445b1d82ab88 (accepted seq 16053)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"science","task_type":"QUALIFIER_CHECK","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}