In the AD group at the point of sampling ApoE, CFH, neural cell adhesion molecule [NCAM], AB40, A1AcidG, and Clusterin were all negatively correlated with MMSE (ApoE: r = −0.150, P = .001; CFH: r = −0.104, P = .026; NCAM: r = −0.114, P = .014; AB40: r = −0.161, P = .001; A1AcidG: r = −0.135, P = .004; Clusterin: r = −0.135, P = .004). The gene discussed is APOE; the disease is Alzheimer disease.