T2D Blood Transcriptomics Biomarker Evidence
Tkachenko et al. 2025 reports meta-analytic blood transcriptomic signals and provides a strong warning that T2D blood transcriptomic biomarker claims are unstable when inferred from individual cohorts.
Evidence Synthesis
| Evidence Point | Source | Interpretation for This Paper |
|---|---|---|
| Individual-study DEG lists were poorly concordant across eight blood RNA-seq datasets. | [[references/tkachenko-2025-cross-study-blood-transcriptomes-t2d | Tkachenko et al. 2025]] |
| Meta-analysis recovered 2065 DEGs and 713 integration-driven discoveries. | [[references/tkachenko-2025-cross-study-blood-transcriptomes-t2d | Tkachenko et al. 2025]] |
| Enriched pathways included neutrophil degranulation, TNF-alpha signaling, oxidative phosphorylation, mTOR signaling, ERAD, oxidative stress, and RNA splicing. | [[references/tkachenko-2025-cross-study-blood-transcriptomes-t2d | Tkachenko et al. 2025]] |
| The paper includes PBMC and whole-blood datasets together. | [[references/tkachenko-2025-cross-study-blood-transcriptomes-t2d | Tkachenko et al. 2025]] |
| The paper does not test ancestry-stratified effects. | [[references/tkachenko-2025-cross-study-blood-transcriptomes-t2d | Tkachenko et al. 2025]] |
Candidate Claims For Manuscript Support
- Blood transcriptomic studies of T2D show substantial cross-study heterogeneity.
- Cross-study integration can identify pathways and genes missed in individual cohorts.
- Immune and stress-response pathways, including neutrophil effector biology, ER-stress/ERAD, mTOR, oxidative stress, and RNA splicing, appear relevant to T2D blood transcriptomic signatures; this is pathway-enrichment evidence, not diagnostic validation or PBMC-specific proof.
- PBMC ancestry claims should explicitly separate sample-type biology, cohort composition, and technical batch effects from ancestry-associated biology.
Claim Discipline
- Use this source for limitations and replication framing.
- Do not use this source as direct evidence of ancestry-associated immune differences.
- Treat neutrophil terms cautiously in PBMC-focused prose unless the project has direct evidence for granulocyte-related signal.