Previous exploratory studies have indicated that GRIN1 (rs11146020) is a good candidate for susceptibility to schizophrenia [24, 25, 33], and other studies have suggested that the combined effects of GRIN1 and GRIN2B gene polymorphisms, including rs1805247 and rs1805502, might be involved in the etiology of schizophrenia. The gene discussed is GRIN2B; the disease is schizophrenia.