The apolipoprotein E E4 allele of the APOE gene is the strongest genetic factor for late-onset Alzheimer disease (LOAD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
32,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
The apolipoprotein E E4 allele of the APOE gene is the strongest genetic factor for late-onset Alzheimer disease (LOAD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Although we did not replicate the earlier association between the APOE 3-TOMM40 haplotypes and age at onset, we observed that the polyT polymorphism is associated with risk of LOAD in APOE 33 homozygotes in a large case-control series but in the opposite direction as in the previous study. 5 key findings →
Design: case-control study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
This study reveals an important role of astrocytic apoE3 and apoE4 on the deposition and accumulation of Aβ plaques as well as on certain Aβ-associated downstream effects. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The apolipoprotein E (APOE) gene is the strongest genetic risk factor for late-onset Alzheimer disease. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Although amyloid-beta (Aβ) peptide deposition into insoluble plaques is a pathological hallmark of Alzheimer disease; soluble oligomeric Aβ has been hypothesized to more directly underlie impaired learning and memory in dementia of the Alzheimer type. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Late-onset Alzheimer's disease (LOAD) is the most common form of dementia in the elderly. 4 key findings →
Evidence: moderate
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Although pathogenic variants in PSEN1 leading to autosomal-dominant Alzheimer disease (ADAD) are highly penetrant, substantial interindividual variability in the rates of cognitive decline and biomarker change are observed in ADAD. 3 key findings →
Design: cross-sectional Evidence: moderate
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Apolipoprotein E (apoE) alleles determine the age-adjusted relative risk (epsilon4 > epsilon3) for Alzheimer's disease (AD).
Full summary, score breakdown and related studies → Original source Free full text
Apolipoprotein E (APOE) genotype is the major genetic risk factor for Alzheimer disease (AD); the ε4 allele increases risk and the ε2 allele is protective. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
APOE genotype is a major genetic risk factor for late-onset Alzheimer disease (AD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The association of rs1990622 with AAO explains, in part, the wide range in the AAO of disease among GRN mutation carriers. 3 key findings →
Participants: 50 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
These new knock-in strains offer a novel and dynamic tool to study the role of APOE in AD pathogenesis in a spatially and temporally controlled manner. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Uptake of carbon 11-labeled Pittsburgh Compound B ([(11)C]PiB) was measured for participants assessed between August 15, 2003, and January 8, 2008, at the Washington University Alzheimer's Disease Research Center and diagnosed either as nondemented (n = 161) or with dementia of the Alzheimer type (n = 37). 1 key finding →
Participants: 161 Evidence: low
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Apolipoprotein E ( APOE ) ε4 genotype is associated with increased risk of dementia in Parkinson's disease (PD), but the mechanism is not clear, because patients often have a mixture of α-synuclein (αSyn), amyloid-β (Aβ), and tau pathologies. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The strongest risk factors for late-onset sporadic Alzheimer's disease (AD) include the ε4 allele of apolipoprotein E (APOE), the R47H variant of triggering receptor expressed on myeloid cells 2 (TREM2), and female sex. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Heterogeneity in progression to Alzheimer's disease (AD) poses challenges for both clinical prognosis and clinical trial implementation. 3 key findings →
Design: longitudinal study Evidence: moderate
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APOE4 is the greatest risk factor for Alzheimer disease (AD) and synergistic effects with amyloid-β peptide (Aβ) suggest interactions among apoE isoforms and different forms of Aβ accumulation. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease (AD) is the most common progressive neurodegenerative disorder causing dementia. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Amyloid-beta (Aβ) plays a key role in the pathogenesis of Alzheimer's disease (AD), but little is known about the proteoforms present in AD brain. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Accumulation of amyloid-beta (Abeta) within extracellular spaces of the brain is a hallmark of Alzheimer disease (AD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The TREM2-DAP12 receptor complex sustains microglia functions. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Apolipoprotein E (apoE) genotype has a major influence on the risk for Alzheimer disease (AD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
APOE4 genotype is the strongest genetic risk factor for Alzheimer's disease. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Myeloperoxidase, a heme protein expressed by professional phagocytic cells, generates an array of oxidants which are proposed to contribute to tissue damage during inflammation. 4 key findings →
Evidence: low
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Cases of early-onset Alzheimer disease (AD) with an autosomal dominant inheritance pattern (familial AD [FAD]) are rare but have greatly advanced our understanding of the molecular pathogenesis of AD. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Free full text links and the Full text may need a subscription label come from Unpaywall, Europe PMC and OpenAlex records of free copies, checked 10 Oct 2026. A study with neither is unknown, not paywalled. Show only studies that are free to read
This is alzhub's own score. It is not an official metric, not an impact factor, and no journal, publisher or ranking body endorses it. We built it so that a reader who is not a scientist can tell a landmark trial from a conference abstract without having to already know the difference. Every point comes from one of 20 components, all of them printed on the study itself, so you can disagree with our arithmetic rather than having to trust the total.
Journals are placed in ordered tiers, never given a numeric impact factor — we could not verify current impact factors from a source we control, and an invented one would be worse than none. Tier 1 is the top-tier general journals (NEJM, The Lancet, JAMA, Nature, Science, Nature Medicine); tier 2 is the leading specialty journals; tier 3 is every other peer-reviewed journal. A separate part scores how much the journal's own papers are cited, which tells the tier-3 journals apart.
Two rules we don't bend. First, we never fill in a missing value: if a record does not state a sample size or a design, that component scores zero, and if we simply have no data for a part, such as a citation count, that part is left out and the study is scored on the parts we could check. The study card says which. Second, anything that is not a peer-reviewed article is capped at 16/100 and carries a warning chip — so a conference abstract or a company press release can never outrank a peer-reviewed paper, no matter how good it looks.
We rank a rigorous null result — a good trial showing that something does not work — above an early positive finding. Someone deciding whether to buy a supplement is served by that, and the rigour is already counted by the design and journal components.
The score is computed from the published data alone and is reproducible: the same file always yields the same numbers.
See the whole rubric drawn out → — four charts covering all 32,180 studies: how the scores are spread and where the cap bites, which of the 20 components the library is strong and weak on, which subjects rest on stronger evidence, and what kinds of study each subject is actually built from.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 32,180 records, built mostly from automated pulls of Europe PMC (66.5% of the library) and OpenAlex (15.8%), plus smaller pulls from PubMed, Crossref and medRxiv. If a study, a drug, or a finding isn't here, that is not evidence it doesn't exist in the literature — it may simply not have been pulled in yet.
1,045 records (3.2% of the library) are not peer-reviewed — 966 of those are preprints posted before any journal review, and the rest are conference abstracts, regulatory notices and reports. Every study card on this page states its status plainly, and the score above is capped for anything that isn't a peer-reviewed article.
See the full, machine-readable breakdown of this library's coverage →
Newest studies, as a dated timeline → Atom feed Where this research is being discussed: events
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