CLAIM CARDS
Claim Cards
Atomic claims extracted from accepted Researka artifacts, with source support, contradiction state, and provenance links when available.
Filtered to publication 019d3db7-0843-4319-bdec-c34cd9eea4ce
exploratory
What does the current evidence establish about Akkermansia Muciniphila and human geroscience? This synthesis tests the thesis that evidence for Akkermansia muciniphila is context-dependent, separating outcome-specific signals from broader claims and identifying the evidence gaps that should bound interpretation. This paper synthesizes akkermansia muciniphila as an aging-related intervention across 78 included source papers and 2155 high-confidence extracted claims. The evidence profile contains 1 direct clinical source, 47 adjacent clinical sources, and 19 mechanistic or model-system sources, with 1184 cross-study disagreements across the evidence base. Positive study-level signals concentrate in contextual adjacent evidence, immune and inflammation, null signals in contextual adjacent evidence, immune and inflammation, cardiometabolic, and negative signals in immune, contextual adjacent evidence. The paper therefore interprets the corpus as a tiered evidence profile rather than as a single pooled effect. The conclusion is that akkermansia muciniphila remains a bounded geroscience case: mechanistic plausibility and selected clinical signals justify further targeted testing, while mixed and null findings limit any unqualified anti-aging claim.
Contradiction: none
Sources: 5
exploratoryThis manuscript is reported as a Thin-corpus evidence brief. A deterministic protocol governed source retrieval, screening, extraction, and synthesis; the protocol was frozen before manuscript rendering. The full audit trail is in the supplementary `methods_pack.json` and the timestamped submission directory `synthesis-akkermansia_muciniphila-v06-DAILY-2026-05-28T09-30-06Z`.
Contradiction: none
Sources: 5
exploratoryThe following fields were extracted from each included source: study design, population / cohort, intervention or exposure, comparator, outcome class, effect direction, effect size, confidence interval or credible interval, p-value, sample size, follow-up duration, risk-of-bias rating.
Contradiction: none
Sources: 5
exploratoryPer-source risk-of-bias was rated using design-appropriate Cochrane RoB-2 (RCTs), ROBINS-I (non-randomised studies), and AMSTAR-2 (systematic reviews / meta-analyses). Ratings recorded in `risk_of_bias.json`.
Contradiction: none
Sources: 5
exploratoryEvidence-tension synthesis: claims grouped by outcome class (cardiometabolic, contextual adjacent evidence, deficiency prevalence, dosing and pharmacokinetics, immune, immune and inflammation, longevity, safety and comorbidity, skeletal, fracture, and bone); within-class agreement, disagreement, and directness gaps surfaced explicitly. Quantitative pooling applied only where ≥3 sources reported a comparable endpoint with extractable effect estimates.
Contradiction: none
Sources: 5
exploratorySource retrieval, claim extraction, evidence routing, and prose drafting were assisted by large language models under a deterministic audit-trail protocol. Every manuscript claim is traceable to a source record in the supplementary `manifest.json`. Final eligibility and interpretation decisions are author-verified.
Contradiction: none
Sources: 5
exploratoryOutcome-class note:** Contextual Adjacent Evidence denotes background, boundary-condition, or adjacent-outcome sources. It is not pooled with direct outcome evidence.
Contradiction: none
Sources: 5
exploratory| Contextual Adjacent Evidence | n=47; claims=1406 | null signal in 40/47 sources | 1 direct; 31 indirect; 8 mechanistic; 7 review | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Immune and Inflammation | n=13; claims=264 | null signal in 10/13 sources | 6 indirect; 7 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Cardiometabolic | n=7; claims=268 | null signal in 4/7 sources | 3 indirect; 4 review | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Immune | n=4; claims=114 | null signal in 2/4 sources | 3 indirect; 1 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Longevity | n=2; claims=3 | null signal in 2/2 sources | 1 indirect; 1 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Deficiency Prevalence | n=1; claims=23 | null signal in 1/1 sources | 1 indirect | single-source slice; hypothesis-generating |
Contradiction: none
Sources: 5
exploratory| Safety and Comorbidity | n=1; claims=22 | null signal in 1/1 sources | 1 review | single-source slice; hypothesis-generating |
Contradiction: none
Sources: 5
exploratory| Skeletal, Fracture, and Bone | n=1; claims=1 | null signal in 1/1 sources | 1 indirect | single-source slice; hypothesis-generating |
Contradiction: none
Sources: 5
exploratoryThis evidence brief reports outcome packets as a map of retained evidence rather than as a full journal Results narrative or pooled effect estimate.
Contradiction: none
Sources: 5
exploratory47 included sources were assigned to this outcome class. Directional coding: negative=1, null=40, positive=2, unclear=4. Directness coding: direct=1, indirect=31, mechanistic=8, review=7.
Contradiction: none
Sources: 5
exploratory13 included sources were assigned to this outcome class. Directional coding: null=10, positive=2, unclear=1. Directness coding: indirect=6, mechanistic=7.
Contradiction: none
Sources: 5
exploratory7 included sources were assigned to this outcome class. Directional coding: null=4, unclear=3. Directness coding: indirect=3, review=4.
Contradiction: none
Sources: 5
exploratory4 included sources were assigned to this outcome class. Directional coding: mixed=1, negative=1, null=2. Directness coding: indirect=3, mechanistic=1.
Contradiction: none
Sources: 5
exploratory2 included sources were assigned to this outcome class. Directional coding: null=2. Directness coding: indirect=1, mechanistic=1.
Contradiction: none
Sources: 5
exploratory1 included source were assigned to this outcome class. Directional coding: null=1. Directness coding: indirect=1.
Contradiction: none
Sources: 5
exploratory1 included source were assigned to this outcome class. Directional coding: null=1. Directness coding: review=1.
Contradiction: none
Sources: 5
exploratory1 included source were assigned to this outcome class. Directional coding: null=1. Directness coding: indirect=1.
Contradiction: none
Sources: 5
exploratoryOutcome-class note:** Contextual Adjacent Evidence denotes background, boundary-condition, or adjacent-outcome sources. It is not pooled with direct outcome evidence.
Contradiction: none
Sources: 5
exploratory| Contextual Adjacent Evidence | n=47; claims=1406 | null signal in 40/47 sources | 1 direct; 31 indirect; 8 mechanistic; 7 review | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Immune and Inflammation | n=13; claims=264 | null signal in 10/13 sources | 6 indirect; 7 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Cardiometabolic | n=7; claims=268 | null signal in 4/7 sources | 3 indirect; 4 review | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Immune | n=4; claims=114 | null signal in 2/4 sources | 3 indirect; 1 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5
exploratory| Longevity | n=2; claims=3 | null signal in 2/2 sources | 1 indirect; 1 mechanistic | limited corpus depth in this outcome class |
Contradiction: none
Sources: 5