Among 146 genes, there were seven genes common to four disorders, including GLT8D1, KCNB1, GABBR1, HIST1H1B, HIST1H2BN, and HIST1H4L in SCZ, DEP, BD, and ASD, and DCC in ADHD, ASD, DEP, and SCZ. This evidence concerns the gene H2BC15 and Behcet disease.