Cited by 1,425Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Apolipoprotein E and Alzheimer disease: pathobiology and targeting strategies

Open access
Yamazaki, Yu, Zhao, Na, Caulfield, Thomas R., Liu, Chia-Chen, Bu, Guojun·2019·Nature Reviews Neurology

Abstract

Polymorphism in the apolipoprotein E (APOE) gene is a major genetic risk determinant of late-onset Alzheimer disease (AD), with the APOE*ε4 allele conferring an increased risk and the APOE*ε2 allele conferring a decreased risk relative to the common APOE*ε3 allele. Strong evidence from clinical and basic research suggests that a major pathway by which APOE4 increases the risk of AD is by driving earlier and more abundant amyloid pathology in the brains of APOE*ε4 carriers. The number of amyloid-β (Aβ)-dependent and Aβ-independent pathways that are known to be differentially modulated by APOE isoforms is increasing. For example, evidence is accumulating that APOE influences tau pathology, tau-mediated neurodegeneration and microglial responses to AD-related pathologies. In addition, APOE4 is either pathogenic or shows reduced efficiency in multiple brain homeostatic pathways, including lipid transport, synaptic integrity and plasticity, glucose metabolism and cerebrovascular function. Here, we review the recent progress in clinical and basic research into the role of APOE in AD pathogenesis. We also discuss how APOE can be targeted for AD therapy using a precision medicine approach.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/s41582-019-0228-7

Cites

318 of 318 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • These APOE4 pathway effects are consistent with reported roles of APOE4 in inflammation, synaptic impairment, MAPK1 signaling and downstream APP transcription, and early endosomes.

    “All these effects are consistent with reported roles of APOE4 in inflammation, synaptic impairment, MAPK1 signaling and downstream APP transcription, and early endosomes7,18.”

    From APOE4 impairs myelination via cholesterol dysregulation in oligodendrocytes (2022) · cites this paper as [7]

    The Neuroinflammation and Synaptic function sections report APOE4-associated inflammatory activation and synaptic impairment. The Aβ production section reports greater APP transcription in human stem-cell-derived neurons exposed to APOE4, while noting conflicting mouse findings. The paper discusses intracellular endosomal compartments but does not identify early endosomes specifically, and the searched passages do not establish MAPK1 signaling as the pathway to APP transcription (pages unavailable in our copy). (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • APOE4 is associated with increased amyloid-β deposition, hyperphosphorylation and aggregation of tau, and accelerated cognitive decline.

    “APOE4 is associated with increased amyloid-β deposition, hyperphosphorylation and aggregation of tau, and accelerated cognitive decline4–7.”

    From APOE4 impairs myelination via cholesterol dysregulation in oligodendrocytes (2022) · cites this paper as [7]

    The ‘APOE4 and Aβ pathology’ section (page unavailable) reports greater Aβ deposition in APOE4 carriers. The ‘Tau, α-synuclein and TDP43 proteinopathies’ section (page unavailable) reports increased tau phosphorylation in experimental models and more tau aggregates in people with two APOE4 alleles when Aβ pathology is present. The copy links APOE4 to earlier symptom onset, but the passages found do not establish accelerated cognitive decline; the claim also omits the condition on the human tau-aggregation finding. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The APOE4 polymorphism alters the accessibility of the lipid-binding region, interfering with APOE's cholesterol and lipid transport capacity.

    “The APOE4 polymorphism alters the accessibility of the lipid-binding region, which interferes with its cholesterol and lipid transport capacity7.”

    From APOE4 impairs myelination via cholesterol dysregulation in oligodendrocytes (2022) · cites this paper as [7]

    The Biology of APOE section says APOE polymorphisms alter structure and lipid binding, and the Lipid transport section says APOE4 is less efficient at transporting lipids to neurons and reports impaired cholesterol efflux in APOE*ε4 homozygotes. But the paper does not say APOE4 alters access to the lipid-binding region or that this causes the transport impairment. Its Biology of APOE section instead describes lipid binding as increasing access to the receptor-binding region in a model of APOE3; page numbers are unavailable in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • APOE4 is the strongest genetic determinant of late-onset AD, increasing risk in a gene dose-dependent manner, whereas APOE2 confers substantial protection.

    “APOE4 is the strongest genetic determinant of late-onset AD, increasing risk in a gene dose-dependent manner, whereas APOE2 confers substantial protection 1 -5 .”

    From APOE2 attenuates APOE4-associated amyloid pathology and related toxicity in a mouse model of Alzheimer’s disease (2026) · cites this paper as [3]

    The Introduction (page unavailable) reports that one APOE ε4 allele raises late-onset AD risk 3–4-fold and two raise it 9–15-fold, supporting the gene-dose claim. It also says ε2 is associated with decreased risk, but does not quantify that protection; it calls APOE a major risk determinant rather than establishing ε4 as the strongest genetic determinant. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Having the APOE ε4 coding mutation(s) increases Alzheimer's disease risk 3-15 fold.

    “having the APOE ɛ4 coding mutation(s) increases AD risk 3–15 fold [3]”

    From Association of SPI1 haplotypes with altered SPI1 gene expression and Alzheimer’s disease risk (2022) · cites this paper as [3]

    The Introduction reports a 3–4-fold increase in late-onset Alzheimer’s disease risk with one APOE ε4 allele and a 9–15-fold increase with two. The cited 3–15-fold range matches, but the sentence omits the source’s late-onset qualifier. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Yamazaki, Y., Zhao, N., Caulfield, T. R., Liu, C.-C., & Bu, G.
Affiliations
Mayo Clinic in Florida (US)
Corresponding author
Bu, Guojun
Venue
Nature Reviews Neurology
Published
2019-07-31
Volume
15
Issue
9
Pages
501-518
ISSN
  • 1759-4758 (ISSN-L)
  • 1759-4766
OpenAlex
W2965401191
Cited by
1,425
References
318
Citations by year
2026: 191 · 2025: 259 · 2024: 233 · 2023: 242 · 2022: 200 · 2021: 172 · 2020: 124 · 2019: 4
FWCI
14.75
Type
journal article
Language
en
Open access
Locations
  • Nature Reviews Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • National Institute on Aging (RF1AG051504, R01AG027924, R37AG027924, RF1AG057181, RF1AG046205, R01AG035355)
  • National Institute of Neurological Disorders and Stroke (P01NS074969)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
apolipoprotein E, APOE ε4, Alzheimer's disease, APOE polymorphism, amyloid-beta, tau pathology, neurodegeneration, microglial activation, lipid transport, synaptic plasticity, glucose metabolism, cerebrovascular function, precision medicine
MeSH terms
Alzheimer Disease, Apolipoproteins E, Brain, Humans, Polymorphism, Genetic, Amyloid beta-Peptides, Genetic Predisposition to Disease, Plaque, Amyloid

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review