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    Nat Genet. 1994 May;7(1):74-8.

    Apolipoprotein E4 allele in a population-based study of early-onset Alzheimer's disease.

    Source

    Department of Epidemiology & Biostatistics, Erasmus University, Medical School, Rotterdam, The Netherlands.

    Abstract

    Several studies have reported an association of the apolipoprotein E allele epsilon 4 (APOE*4) to familial and sporadic late-onset Alzheimer's disease (LOAD). Here we report on the relationship between APOE*4 and early-onset Alzheimer's disease (EOAD) in a Dutch population-based study. The frequency of the APOE*4 allele was 2.3 times higher among EOAD cases compared to controls. Among patients, the allele frequency was 1.6 times higher in those with a positive family history than in those without. A significant increase in risk of EOAD was found for subjects homozygous for APOE*4 regardless of family history of dementia, but an increase in EOAD risk for APOE*4 heterozygotes could only be shown in subjects with a positive family history. Our study demonstrates a significant association between APOE*4 and EOAD which is modified by family history of dementia.

    PMID:
    8075646
    [PubMed - indexed for MEDLINE]

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