Compared with healthy controls, patients with schizophrenia exhibited significantly smaller integral values of oxy-Hb changes (region 1: t = 4.177, p < 0.001; left region: t = 4.923, p < 0.001; right region 2: t = 4.027, p < 0.001). The gene discussed is GSTM1; the disease is schizophrenia.