The following 19 features were used for model building: age, gender, education, APOE ε2, APOE ε4, K-BNT, ideomotor apraxia, calculation total score, RCFT copy score, RCFT copy time, SVLT delayed recall, SVLT recognition score, RCFT delayed recall, RCFT recognition score, contrasting program, go/no-go test, COWAT animal, K-MMSE, and CDR-SOB. The gene discussed is APOE; the disease is ideomotor apraxia.