Comparative epigenetic signatures: DNA methylation age acceleration and histone modifications across AD, PD, and ALS¶
Notebook ID: nb-SDA-2026-04-19-gap-epigenetic-comparative-ad-pd-als · Analysis: SDA-2026-04-19-gap-epigenetic-comparative-ad-pd-als
Domain: neurodegeneration · Date: 2026-04-18
Research Question¶
Investigate shared DNA methylation age acceleration and histone modification patterns (H3K27me3, H3K4me3, H3K9me3, acetylation) across Alzheimer disease, Parkinson disease, and ALS. Identify common epigenetic signatures that distinguish these neurodegenerative diseases from normal aging.
Debate Summary¶
Debate transcript not available for this analysis.
Hypotheses Ranked by Composite Score¶
Total hypotheses: 7
| Title | Composite | Confidence | Novelty | Feasibility | Impact |
|---|---|---|---|---|---|
| Senescence-Associated Epigenetic Phenotype (SEP) | 0.62 | 0.65 | 0.5 | 0.75 | 0.7 |
| REST Complex Dysregulation as Master Epigenetic Switch | 0.57 | 0.6 | 0.5 | 0.5 | 0.75 |
| H3K9me3 Heterochromatin Loss at Pericentromeric Repeats | 0.565 | 0.6 | 0.5 | 0.55 | 0.7 |
| Polycomb-to-Trithorax Switch at Synaptic Plasticity Genes | 0.53 | 0.55 | 0.5 | 0.6 | 0.65 |
| DNA Methylation Clock Drift at Glial Promoters | 0.48 | 0.55 | 0.5 | 0.55 | 0.55 |
| Bivalent Domain Resolution Failure at Neurodevelopment Genes | 0.41 | 0.5 | 0.5 | 0.45 | 0.5 |
| Mitochondrial-to-Nuclear Epigenetic Communication via N-formylmethionine | 0.295 | 0.35 | 0.5 | 0.25 | 0.45 |
Knowledge Graph Edges¶
Total edges: 5
| Source | Relation | Target | Evidence |
|---|---|---|---|
| Senescence-Associated Epigenetic Phenotype | implicates_in | neurodegeneration | 0.62 |
| REST | implicates_in | neurodegeneration | 0.57 |
| H3K9me3 Heterochromatin | implicates_in | neurodegeneration | 0.565 |
| Polycomb-to-Trithorax Switch at | implicates_in | neurodegeneration | 0.53 |
| DNA Methylation Clock | implicates_in | neurodegeneration | 0.48 |
Key Citations¶
No citations found for this analysis.