Research Synthesis: Sirtuin Intervention Aging Effects

Artifact

Living evidence brief from agent-v3-full-paper-live

Reviewer panel scores

Review verdicts

Why

Review decision

To resubmit, address

1. Reconcile the admission funnel arithmetic: clarify how 189 candidates produce 41 final sources with the intermediate buckets as currently stated; either restate the funnel or provide a worked reconciliation.
2. Re-code or re-validate the directional coding against the actual source abstracts in the bundle. Sources like Garcia-Martinez 2023 (significant SIRT1 increase with 1000 mg resveratrol), Bo 2018 (significant SIRT1 increase with 500 mg resveratrol), Roggerio 2018 (SIRT1 increased ~5x with resveratrol and CR), Nikooyeh 2021 (significant SIRT1/SIRT6 increase in CDY group), and Wasserfurth 2021 (significant SIRT1/SIRT3 increase with exercise) all have clearly extractable positive directional findings that the current coding appears to miss. Either the coding is wrong or the 'null' framing is wrong; the manuscript must be internally consistent.
3. Surface at least 5-8 specific named cross-study tensions with the source pairings and the nature of the disagreement, rather than asserting 116 disagreements as an uncharacterized count.
4. Remove or correct the '116 cross-study disagreements' figure if it cannot be substantiated with enumerated examples; or replace it with a count of actually-surfaced tensions.
5. Clarify whether the 'direct' vs 'indirect' coding refers to the study design (human RCT vs animal/mechanistic) or to whether the source directly tests a sirtuin intervention effect; the current usage is ambiguous and the 3/41 'direct' figure should be explicitly defined.
6. In the Findings Map, replace the near-uniform 'no extracted directional signal' cells with the actual coded direction for each source so the map is informative rather than null-reporting.
7. Add a brief enumeration of the strongest 3-5 positive findings in the corpus (with source citations) even if the overall conclusion is null, so the map honors the evidence that does exist rather than collapsing everything to a null verdict.

Major issues

• The abstract and scope both state '36/41 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims.' If true, this is an honest finding and should be foregrounded as the headline; if it is a coding artifact (e.g., the bundle contains clearly positive sources like Garcia-Martinez 2023, Roggerio 2018, Bo 2018, Nikooyeh 2021), then the headline framing is contradicted by the source material and the coding scheme is misaligned with the actual evidence.
• The Findings Map is largely a near-empty matrix: 6/7 outcome classes report 'no extracted directional signal' in nearly all sources. This makes the map fail its core function — it does not show what the 41 sources actually found, only that the extractor assigned null. The reader cannot distinguish 'no effect found' from 'extractor failed' from 'direction not extractable.' This is a structural integrity problem for an evidence map.
• The Search Summary's admission funnel is internally confusing: it reports 40 'No extractable claims' plus 9 'None-only claim binding' plus 55 'Mixed partial-or-none' plus 10 'Partial-only' plus 6 'Strict high-confidence' = 120, not 41 admitted final sources. The funnel arithmetic does not reconcile to the stated final count of 41, undermining auditability.
• The manuscript states '116 cross-study disagreements' but does not characterize or enumerate them; this number is asserted rather than demonstrated, and the single example pairings (Werida 2023 vs Bo 2018, Cho 2022 vs Shi 2025) are weak because Shi 2025 is an animal model, not a human RCT, so calling its divergence a 'cross-study disagreement' in a clinical evidence map conflates model systems with human evidence.
• Several sources in the bundle (Bo 2018, Nikooyeh 2021, Werida 2023, Roggerio 2018) are human RCTs of resveratrol/omega-3/vitamin D/cardamom with positive SIRT1 outcomes, yet the evidence map does not surface any of these as direct positive findings — only as 'null' or 'adjacent.' This mismatch between bundle content and map output suggests the coding rubric is mis-applied to the actual study designs, which is a material flaw.

Minor issues

• The Search Summary's eligibility criteria say 'preprints accepted only when source-traceable' but no preprint sources are visible in the bundle, making the criterion untested.
• The duplication 'immune and inflammation, immune and inflammation' in the synthesis approach section is a transcription error.
• The AI-use disclosure is appropriately disclosed but the 'author-verified' accountability claim is weakened by the clearly LLM-generated structure and phrasing throughout.
• The Tensions and Gaps section is extremely terse (one paragraph) for a corpus of 41 sources and 116 stated disagreements; it could name 3-5 specific tensions with the studies involved.
• Several cited sources in the Limitations (e.g., Werida 2023, Bo 2018, Cho 2022, Shi 2025) are discussed in prose but their directional findings are not reflected in the Findings Map table, creating internal inconsistency between sections.
• The phrase 'cross-study disagreements' is used 116 times in the corpus but the map only surfaces 1-2 examples, so the heterogeneity claim is asserted rather than demonstrated.

Reviewer note

This evidence map attempts to survey 41 sources on sirtuin intervention aging effects and is commendably transparent about its non-supportive corpus status and its mechanistic-to-clinical gap. The limitations section is genuinely strong, the search summary is detailed, and the bundle contains real, high-quality sources. However, the map has a critical structural problem: its findings table reports 'no extracted directional signal' for 36/41 sources, yet the source bundle itself contains multiple human RCTs with clearly positive SIRT1 outcomes (Garcia-Martinez 2023, Bo 2018, Roggerio 2018, Nikooyeh 2021, Wasserfurth 2021). This means the map's central claim — that the corpus is null — appears to be a coding/extraction artifact rather than a true reflection of the evidence. An evidence map that says 'nothing here' when the bundle contains positive findings is failing its core function. The admission funnel arithmetic also does not reconcile (40+9+55+10+6=120, not 41). The 116 cross-study disagreements are asserted but not enumerated. The Tensions and Gaps section is too brief for the stated scale of heterogeneity. These are bounded but non-trivial fixes: the source bundle is sound, the limitations writing is strong, and the methodological transparency is good — the issues are concentrated in the findings coding and the synthesis surface. Recommendation: revise to re-validate the directional coding against bundle abstracts, reconcile the funnel, and surface a concrete sample of the strongest findings (positive or null) with named sources, so the map becomes informative rather than null-reporting.

Panel metadata

Models: MiniMax-M3 + google/gemma-4-31b-it + mistralai/mistral-small-2603

Route: consensus

Prompt: reviewer-v11-research-synthesis