Cited by 67Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchGenetic Associations and Epidemiology

Evidence that the APOE locus influences rate of disease progression in late onset familial Alzheimer's Disease but is not causative

Bennett, Craig, Crawford, Fiona, Osborne, Aaron, Diaz, Patricia, Hoyne, Jonathan, Lopez, Robert, Roques, Penelope, Duara, Ranjan +2 more·1995·American Journal of Medical Genetics

Abstract

An association has been observed in several independent data sets between late onset Alzheimer's Disease (AD) and the APOE locus on chromosome 19. We have examined the genotype in family history positive (FHP) and family history negative (FHN) cases and find a distortion of the APOE allele frequencies in accord with previous studies. However, when we examined the allele distribution of the at‐risk siblings of the FHP group we found an excess of the ϵ4 allele which also differs significantly from historic controls but not from the affected siblings. The age distribution of the affected and unaffected siblings was similar, suggesting that the allelic frequency distortion in the unaffected siblings was not due to their being below the mean age of onset. Lod score linkage analysis, with age dependent onset and non‐stringent specification of the genetic parameters, did not suggest linkage to the APOE locus. Furthermore, an analysis of variance of the age of disease free survival suggested that APOE genotype contributes a small fraction of the total variance indicating that the APOE locus is a poor predictor of disease free survival age within late onset families. One explanation for the age dependent association reported by other groups, and our results, is that the APOE locus enhances the rate of progression of the disease process in otherwise predisposed individuals and that variation at this locus is not able in and of itself to cause the disease. We suggest this hypothesis is compatible with the current literature regarding APOE and AD. © 1995 Wiley‐Liss, Inc.

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Crossref · 10.1002/ajmg.1320600102

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  • APOE remains the only locus repeatedly associated with AAO, but PICALM and BIN1 have also been reported to affect AAO.

    “To date, APOE remains the only locus repeatedly associated with AAO8,9, but PICALM and BIN1 have also been reported to affect AAO6,10,11.”
  • Genes linked to early-onset AD risk that are expressed primarily in microglia include TREM2, MS4A, ABCA7, ApoE4, CD33, PU.1, and BIN1.

    “Genetic studies show that a number of genes that have been linked to early-onset AD risk are expressed primarily in microglia.”

    From Microglial signatures and their role in health and disease (2018) · cites this paper as [129]

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Authors
Bennett, C., Crawford, F., Osborne, A., Diaz, P., Hoyne, J., Lopez, R., Roques, P., Duara, R., Rossor, M., & Mullan, M.
Affiliations
  • University of South Florida (US)
  • Mount Sinai Medical Center (US)
  • St Mary's Hospital (GB)
Corresponding author
Mullan, Mike
Venue
American Journal of Medical Genetics
Publisher
Wiley
Published
1995-02-27
Volume
60
Issue
1
Pages
1-6
ISSN
  • 0148-7299 (ISSN-L)
  • 1096-8628
OpenAlex
W2151359455
Cited by
67
References
21
Citations by year
2021: 2 · 2018: 1 · 2017: 3 · 2016: 2 · 2014: 1 · 2013: 2
FWCI
4.99
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Medical Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
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 › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
late-onset Alzheimer's disease, familial Alzheimer's disease, APOE ε4, disease progression, age of onset, family history (medicine), genetic linkage, disease-free survival, genetic susceptibility
MeSH terms
Age Factors, Aged, Aged, 80 and over, Alleles, Alzheimer Disease, Apolipoproteins E, Base Sequence, Chromosomes, Human, Pair 19, Female, Genotype, Humans, Genetic Linkage, Male, Models, Genetic, Molecular Sequence Data, Case-Control Studies, Age of Onset, DNA Primers, Apolipoprotein E4

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