Alzheimer's disease genetics converges on microglial and neuronal dysregulation

Alzheimer's disease (AD) is the most common cause of dementia, with global case numbers projected to reach 153 million in 20501.

By Uffelmann, Wightman, Bahrami +154NatureOct 28, 2026

Score████░░░░░░4.4

VerdictWorth a reader's time today.

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Abstract

Alzheimer's disease (AD) is the most common cause of dementia, with global case numbers projected to reach 153 million in 20501. AD is highly heritable, with twin-based heritability estimates of 60-80%2. Although 1,200 causal loci are predicted to exist for AD3, approximately 80 loci have been associated with AD in two recent studies4,5. Low single-nucleotide polymorphism (SNP)-based heritability estimates have prompted the suggestion that little further common-variant risk remains to be found6. Here we analysed data from 109,479 cases, 74,141 proxy cases, 2,131,799 controls and 499,708 proxy controls from diverse ancestries, identifying 118 loci in a multi-ancestry analysis and 9 additional loci in ancestry-specific analyses, 48 of which are new. We identified new AD risk genes, prioritized potential drug targets, and found that genes upregulated in microglia and downregulated in neurons in cases compared with controls were enriched for AD-associated genetic risk. Moreover, we improved polygenic prediction and estimated a SNP heritability of 16%, nearly threefold higher than previous estimates. Together, our findings show that the common-variant contribution to AD has been substantially underestimated, and reveal new molecular and cellular mechanisms as well as specific targets for future drug development research.

Emil Uffelmann, Douglas P Wightman, Shahram Bahrami, Alexey A Shadrin, Vera Fominykh, Takafumi Ojima, Chenyang Jiang, Christian Benner, Elisa Moreno, Adrian I Campos, Jesper Q Thomassen, Emmanuel Minois-Genin, Hei Man Wu, G Bragi Walters, Richard Sherva, Tian Lin, Xuemin Wang, Julien Bryois, Kristi Krebs, Marijn Schipper, Akira Narita, Alessandro Serretti, Anja H Simonsen, Anna L van Seumeren, Anne Corbett, Anne-Brita Knapskog, Annette M Hartmann, Anouk den Braber, Argonde C van Harten, Arvid Harder, et al.

The editor's rubric

Heuristic review

Leverage3 / 5: A method or resource many groups across the field will adopt within a year.; 24% of this desk’s rubric
Magnitude3 / 5: Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.; 16% of this desk’s rubric
Evidence4 / 5: Strong: large scale, preregistered, independently replicated, or a well-powered randomized trial.; 20% of this desk’s rubric
Novelty3 / 5: A genuinely new approach to an open problem.; 20% of this desk’s rubric
Trajectory2 / 5: Some room to improve with obvious engineering.; 10% of this desk’s rubric
Stakes3 / 5: Meaningful benefit to many people within a few years.; 10% of this desk’s rubric

Dimension	Level	Weight	What that level means
Leverage	███░░3/5	24%	A method or resource many groups across the field will adopt within a year.
Magnitude	███░░3/5	16%	Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.
Evidence	████░4/5	20%	Strong: large scale, preregistered, independently replicated, or a well-powered randomized trial.
Novelty	███░░3/5	20%	A genuinely new approach to an open problem.
Trajectory	██░░░2/5	10%	Some room to improve with obvious engineering.
Stakes	███░░3/5	10%	Meaningful benefit to many people within a few years.

Editor’s rationale

Heuristic triage from title and abstract text only, not a reading of the paper. Cues found: breadth (many tasks); stakes (global scale, major disease).

How the score was computed

rank-2026-10-18

Score████░░░░░░4.4

Score = 10 × (75% × adjusted merit / 10 + 15% × attention + 10% × freshness)

Desks place stronger verdicts first, then use this score to order work within the same verdict.

Merit: 6.2 / 10; Weighted rubric, evidence-gated.
Adjusted merit: 4.8 / 10; Shrunk toward the desk prior by editor confidence (36%).
Attention: 0%; Citations, upvotes, points, mentions.
Freshness: 80%; Half-life decay since publication.

Citations0 (reference 20, via openalex, Oct 30, 2026, 05:48 UTC)

The record

Reviewed by heuristic-v10 on Oct 30, 2026, 05:48 UTC. Paper type: empirical.
Categories: Journal Article
BRIEF, No.5 in the Biology edition of October 30, 2026.