4a. Specific Aims. In our previous work based on a Taiwanese sample, we have found that schizophrenia was significantly associated with 11 candidate genes, including GNPAT (1q42.1), DISC1 (1q42.1), MRDS1 (6p24.3), NOTCH4 (6p21.3), NRG1 (8p21-p12), DAAO (12q22), G72 (13q32), CHRNA7 (15q14), PRODH