TNF and schizophrenia: In three studies, individuals with schizophrenia were genotyped for rs1800629 (−308G/A) which is located on the promoter region of the TNF gene and regulates expression of TNF-α (Kang et al., 2009 (TD = 83/NTD = 126; conference abstract); Wang et al., 2012 (TD = 350/NTD = 410); Bošković et al., 2013 (TD = 6/NTD = 46)).