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These counts and lists are worked out from the library itself each time the page loads. A score rates how much weight a study can bear — its design, journal, evidence and recency — not whether its result is good news. How we score a study. For a plain-English guide to this subject, see Genetics.

The 20 highest-scoring studies

  1. Genetic contributions to variation in general cognitive function: a meta-analysis of genome-wide association studies in the CHARGE consortium (N=53949) Molecular psychiatry · 2015-02-03 · · Peer-reviewed
  2. Prevalence of cerebral amyloid pathology in persons without dementia: a meta-analysis JAMA · 2015-05-01 · · Peer-reviewed

    This analysis of many studies found that amyloid buildup in the brain becomes more common with age and is more frequent in people with mild cognitive impairment than in those with normal thinking, and that it can appear 20 to 30 years before dementia symptoms. It helps explain when amyloid pathology starts, but it does not provide a way to treat, cure or prevent Alzheimer's disease.

  3. Polygenic scores and Mendelian randomization identify plasma proteins causally implicated in Alzheimer's disease Frontiers in neuroscience · 2024-07-23 · · Peer-reviewed
  4. Proteomic landscape of Alzheimer's Disease: novel insights into pathogenesis and biomarker discovery Molecular neurodegeneration · 2021-08-12 · · Peer-reviewed
  5. APOE Genotype and Alzheimer Disease Risk Across Age, Sex, and Population Ancestry JAMA Neurology · 2023-12-01 · · Peer-reviewed

    In 68,756 East Asian, Hispanic, Black and White individuals, links between APOE genotype and Alzheimer disease differed by ancestry: the ε2 genotypes (ε2/ε2, ε2/ε3) showed no association with AD in East Asian people (OR 0.97), and Hispanic people showed weaker APOE associations that overall ancestry could not explain. A previously reported higher risk for women with the ε3/ε4 genotype was seen again in White individuals, but at ages 60 to 70 (OR 1.48), and also in a combined analysis of Black and Hispanic individuals (OR 1.72). These are statistical associations; they do not give anyone a personal risk figure and do not point to a treatment.

  6. Common variants at MS4A4/MS4A6E, CD2AP, CD33 and EPHA1 are associated with late-onset Alzheimer's disease Nature genetics · 2011-04-03 · · Peer-reviewed

    In a three-stage genome-wide study by the Alzheimer Disease Genetics Consortium, common variants at MS4A4A, CD2AP, EPHA1 and CD33 were associated with late-onset Alzheimer's disease after checks in two further replication stages (for example, MS4A4A across all three stages: P = 8.2 × 10⁻¹²). The study also confirmed earlier links at CR1, CLU, BIN1 and PICALM, but not at EXOC3L2. The record reports how unlikely each signal is to be chance, not how much any variant changes risk, so it cannot predict an individual's risk and it tested no treatment.

  7. Whole-genome sequencing reveals novel ethnicity-specific rare variants associated with Alzheimer's disease Molecular psychiatry · 2022-03-10 · · Peer-reviewed
  8. Sex differences in the genetic predictors of Alzheimer's pathology Brain : a journal of neurology · 2019-09-01 · · Peer-reviewed
  9. Brain and Blood Transcriptome-Wide Association Studies Identify Five Novel Genes Associated with Alzheimer's Disease Journal of Alzheimer's disease : JAD · 2024-04-19 · · Peer-reviewed
  10. Consensus meta-analysis of genome-wide association studies for Alzheimer's disease and related dementias Nature Genetics · 2026-06-23 · · Peer-reviewed

    This 2026 update is an even larger follow-up to the 2022 Bellenguez GWAS, combining data from nearly 1 million people, and brought the total number of Alzheimer's-linked genetic regions to 91 (16 newly found). It showed that people in the highest tenth of a genetic risk score were roughly twice as likely to show severe tau tangle and amyloid plaque pathology when their brains were examined after death.

  11. A 1-year, randomized, placebo-controlled study of donepezil in patients with mild to moderate AD Neurology · 2001-08-01 · · Peer-reviewed
  12. Genome-wide association meta-analysis in 269,867 individuals identifies new genetic and functional links to intelligence Nature genetics · 2018-06-25 · · Peer-reviewed
  13. Case-control association mapping by proxy using family history of disease Nature genetics · 2017-01-16 · · Peer-reviewed
  14. The epigenetic clock as a predictor of disease and mortality risk: a systematic review and meta-analysis Clinical epigenetics · 2019-04-11 · · Peer-reviewed
  15. A genome-wide association meta-analysis of all-cause and vascular dementia Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024-07-24 · · Peer-reviewed
  16. No Genetic Overlap Between Circulating Iron Levels and Alzheimer's Disease Journal of Alzheimer's disease : JAD · 2017-01-01 · · Peer-reviewed
  17. Alzheimer's Disease and Rheumatoid Arthritis: A Mendelian Randomization Study Frontiers in neuroscience · 2018-09-12 · · Peer-reviewed
  18. The ApoE Gene Is Related with Exceptional Longevity: A Systematic Review and Meta-Analysis Rejuvenation Research · 2015-02-01 · · Peer-reviewed
  19. A novel Alzheimer disease locus located near the gene encoding tau protein Molecular psychiatry · 2015-03-17 · · Peer-reviewed

    Because APOE ɛ4 "may mask effects of other loci," this study looked separately at people without ɛ4 and found a new genome-wide significant signal in a region of chromosome 17 near MAPT, the gene for tau protein, where one SNP (rs2732703) accounted for the whole signal. The same variants were linked to activity of the nearby KANSL1 gene, and more weakly MAPT, in brain tissue, and an early-stage analysis suggested APOE may interact with a TMEM106B variant previously tied to frontotemporal dementia. The authors say the result needs replication in independent samples before the region's role is confirmed; it points to where to look, not to a treatment.

  20. Ginkgo biloba for preventing cognitive decline in older adults: a randomized trial JAMA · 2009-12-01 · · Peer-reviewed

    In this large randomized trial of older adults, Ginkgo biloba did not slow cognitive decline in any measured domain compared with placebo. The results give no support for taking Ginkgo biloba to prevent or delay cognitive decline.

See all 1,615 studies in Genetics, with filters →

Newest additions on this subject

All 1,615 studies in Genetics, newest first →

What the library holds on this subject

By review status

StatusStudies
Peer-reviewed1,527
Preprint — not yet peer-reviewed87
Retracted — do not rely on it1

By usefulness score

Score bandStudies
70+79
50–69577
30–49847
Under 30112

By strength of evidence

Rated in our summaryStudies
low1,134
moderate357
high103
not rated14
early4
preliminary3

Most frequent journals

JournalStudies
Neurology149
Archives of neurology47
JAMA neurology46
Alzheimer's & dementia : the journal of the Alzheimer's Association38
Alzheimer s & Dementia31
Nature communications30
Neurobiology of aging30
Neuron30
The Journal of biological chemistry30
medRxiv (preprint)28

Studies by year published

Genetics studies in the library by year published
YearStudiesBar
2026147
2025169
202485
202375
202281
202180
202080
201976
201868
201760
201651
201565
201449
201350
201243
201139
201052
200934
200831
200732
200630
200531
200427
200315
200220
200114
200023
199913
199812
199716
199611
199514
199412
19937
19911
19901
19881

Counts the 1,615 studies with a usable publication date. The library is a large sample of published work, not a complete index, so these counts describe the library, not the whole field.

Other subjects in the library

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