TCF4 and schizophrenia: The regulation target genes of miR-137 are CUB and Sushi multiple domains 1 gene (CSMD1), WW domain binding protein 1 like gene (C10orf26), calcium voltage-gated channel subunit alpha1 C gene (CACNA1C), transcription factor 4 gene (TCF4) and zinc finger protein 804A (ZNF804A), and these genes were confirmed to be genetic risk genes for schizophrenia [22–25].