Evidence map›Paper›PMID 35510513›Full record

ReviewThe European journal of neuroscience2022

A multi-hit hypothesis for an APOE4-dependent pathophysiological state.

Oliver George Steele, Alexander Cameron Stuart, Lucy Minkley, Kira Shaw, Orla Bonnar, Silvia Anderle, Andrew Charles Penn, Jennifer Rusted, Louise Serpell, Catherine Hall and 1 more

Open access · greenAbstract readReview
In one paragraph

Review in The European journal of neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.0field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Progressive behavioral and cognitive decline inbioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Case Report of Dual Variants inClinical case reports · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Perceptual discrimination of complex objects: Apolipoprotein E e4 gene-dose effects in mid-life.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. APOE ε4 carrier status moderates the effect of lifestyle factors on cognitive reserve.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  16. Multifaceted roles of APOE in Alzheimer disease.Nature reviews. Neurology · 2024
    Review
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

Oliver George SteeleSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0003-4789-9773
Alexander Cameron StuartSchool of Psychology, University of Sussex, Brighton, UK.ORCID 0000-0003-2309-6124
Lucy MinkleySchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0002-3432-0032
Kira ShawSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0003-3889-1171
Orla BonnarSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0002-8665-558X
Silvia AnderleSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0002-0906-3900
Andrew Charles PennSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0002-2812-8386
Jennifer RustedSchool of Psychology, University of Sussex, Brighton, UK.ORCID 0000-0002-1341-6334
Louise SerpellSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0001-9335-7751
Catherine HallSchool of Life Sciences, University of Sussex, Brighton, UK.ORCID 0000-0002-2316-7714
Sarah KingSchool of Psychology, University of Sussex, Brighton, UK.ORCID 0000-0002-7412-9558
University of Sussex · GB

Funding

Medical Research Council MC_PC_15071Medical Research Council MR/S026495/1
6 · The paper itself

Abstract

The APOE gene encoding the Apolipoprotein E protein is the single most significant genetic risk factor for late-onset Alzheimer's disease. The APOE4 genotype confers a significantly increased risk relative to the other two common genotypes APOE3 and APOE2. Intriguingly, APOE4 has been associated with neuropathological and cognitive deficits in the absence of Alzheimer's disease-related amyloid or tau pathology. Here, we review the extensive literature surrounding the impact of APOE genotype on central nervous system dysfunction, focussing on preclinical model systems and comparison of APOE3 and APOE4, given the low global prevalence of APOE2. A multi-hit hypothesis is proposed to explain how APOE4 shifts cerebral physiology towards pathophysiology through interconnected hits. These hits include the following: neurodegeneration, neurovascular dysfunction, neuroinflammation, oxidative stress, endosomal trafficking impairments, lipid and cellular metabolism disruption, impaired calcium homeostasis and altered transcriptional regulation. The hits, individually and in combination, leave the APOE4 brain in a vulnerable state where further cumulative insults will exacerbate degeneration and lead to cognitive deficits in the absence of Alzheimer's disease pathology and also a state in which such pathology may more easily take hold. We conclude that current evidence supports an APOE4 multi-hit hypothesis, which contributes to an APOE4 pathophysiological state. We highlight key areas where further study is required to elucidate the complex interplay between these individual mechanisms and downstream consequences, helping to frame the current landscape of existing APOE-centric literature.

Indexed as

Alzheimer DiseaseApolipoprotein E4Apolipoprotein E2Apolipoprotein E3Apolipoproteins EHumansApolipoprotein E2Apolipoprotein E3Apolipoprotein E4Apolipoproteins EageingAPOEmultihit hypothesispathophysiologyreview

Identifiers

PMID35510513
PMCPMC9796338
OpenAlexW4229011298

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.