APOE epsilon4 allele is associated with reduced cerebrospinal fluid levels of Abeta42.

Prince, J A; Zetterberg, H; Andreasen, N; Marcusson, J; Blennow, K · Neurology · 2004

cross_sectional · Level IV

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Abstract

The epsilon4 allele of APOE is a risk factor for Alzheimer disease (AD). By analysis of a large cohort of AD patients (n = 563) and control subjects (n = 118), it is shown that the epsilon4 allele is strongly associated with reduced CSF levels of beta-amyloid (1-42) (Abeta42) in both AD (p < 10(-9)) and control (p = 0.0012) populations. As no associations of APOE variants with other indexes of AD severity were observed, this effect may reflect a fundamental involvement of ApoE in Abeta metabolism.

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