Signal
Preprints examine biological heterogeneity in Alzheimer’s disease
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-09-08 06:15 UTCUpdated 2026-09-08 12:35 UTC
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Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
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Overview
Two preprints published within the reporting window point to a more heterogeneous view of Alzheimer’s disease. One identifies two reproducible MRI-based neuroanatomical dimensions across 1,757 participants, while the other links hippocampal/medial temporal sclerosis with clinical severity, regional TDP-43 findings, and hippocampal atrophy in autopsy data.
Entities
Alzheimer’s disease
Why now
- Both studies were posted within the latest reporting window.
- The work adds complementary neuroimaging and neuropathology evidence on Alzheimer’s disease heterogeneity.
Why it matters
- The findings support investigating Alzheimer’s disease as a set of biologically diverse profiles.
- MRI dimensions and co-pathology associations could inform future stratified research, according to the preprints.
Evidence assessment
Recurring claims
- MRI-based analysis identified two neuroanatomical dimensions of Alzheimer’s disease in a cohort of 1,757 participants.
- Hippocampal/medial temporal sclerosis was associated with greater clinical severity, regional TDP-43 findings, and hippocampal atrophy in Alzheimer’s disease cases.
How sources frame it
- MedRxiv Preprint Authors: neutral
- BioRxiv Preprint Authors: neutral
Two fresh preprints examine distinct sources of Alzheimer’s disease heterogeneity, from MRI-derived dimensions to co-pathology.
All evidence
All evidence
Hippocampal/medial temporal sclerosis is associated with clinical severity, regional TDP-43, and hippocampal atrophy in Alzheimer disease
bioRxiv · biorxiv.org · 2026-09-08 12:35 UTC
Machine learning-derived Alzheimer's disease dimensions: neuroanatomical, cognitive, clinical, functional, and genetic risk heterogeneity signatures
medRxiv · medrxiv.org · 2026-09-08 06:15 UTC
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