SLC6A3 and schizophrenia: GABRA2 (r = 0.790, p < 0.0001), and GABRA3 (r = 0.847, p < 0.0001) mRNAs were significantly positively correlated with DAT mRNA in schizophrenia cases, but not in control cases (r = -0.030, p = 0.887; r = 0.310, p = 0.132, respectively), and these correlations were significantly different when comparing diagnostic groups (GABRA2: z = -3.65, p < 0.001 and GABRA3: z = -3.13, p = 0.017) (Table 4).