Apolipoprotein(a) [Apo(a)], ApoA-I, Ceruloplasmin and Pancreatic prohormone were all nominally associated with MCI conversion to AD by logistic regression (β = -0.476, P < 0.05; β = 0.631, P < 0.05; β = -0.526, P < 0.05; β = -0.456, P < 0.05, respectively, Supplementary Table 8). This evidence concerns the gene AOPEP and Alzheimer disease.