Apolipoprotein E-associated risk for Alzheimer's disease in the African-American population is genotype dependent.

Sahota, A; Yang, M; Gao, S; Hui, S L; Baiyewu, O; Gureje, O; Oluwole, S; Ogunniyi, A et al. · Ann Neurol · 1997

case_control · Level III

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Abstract

As a part of our ongoing study on Alzheimer's disease (AD) in elderly African Americans, we obtained clinical assessment and apolipoprotein E (ApoE) genotype data on 288 individuals (including 60 with AD). The ApoE epsilon4 allele frequency was significantly increased in AD patients compared with controls. The age-adjusted odds ratio (OR) for AD in epsilon4 homozygotes was 4.83 (95% confidence interval [CI], 1.71-13.64) compared with the epsilon3/epsilon3 genotype, but the OR for AD with the epsilon3/epsilon4 genotype did not reach significance (1.20; 95% CI, 0.58-2.45). These findings suggest that the association between ApoE epsilon4 and AD is weaker in African Americans than in whites.

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