VGF and Alzheimer disease: The fold-change in the top five CSF proteins according to AD diagnosis remained significant after we adjusted for age, education, sex, and the APOE ε4 allele covariates in multivariate analyses (B = −4.489, p = 0.001 for VGF; B = 1.339, p = 0.021 for 14-3-3ζ; B = −2.326, p = 0.015 for CgA; B = −3.981, p = 0.015 for SgI; B = −1.818, p = 0.046 for OPCML).