Biomarker for Alzheimer’s Found in Cerebral Spinal Fluid

Several studies suggest that the apolipoprotein E (APOE) ε4 allele modulates cerebrospinal fluid (CSF) levels of β-amyloid 42 (Aβ42). Whether this effect is secondary to the association of the APOE ε4 allele with cortical Aβ deposition or whether APOE ε4 directly influences CSF levels of Aβ42 independently of Aβ pathology remains unknown.

The objective of the study is to evaluate whether the APOE genotype affects the diagnostic accuracy of CSF biomarkers for Alzheimer’s disease (AD), in particular Aβ42 levels, and whether the association of APOE ε4 with CSF biomarkers depends on cortical Aβ status.

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