Erbb4 is a genetic susceptibility gene for schizophrenia (Mei and Xiong, 2008; Pitcher et al., 2011), with many studies reporting the crucial role of ErbB4 in the pathogenesis of schizophrenia (Chong et al., 2008; Del Pino et al., 2013; Hahn et al., 2006; Shamir et al., 2012). This evidence concerns the gene ERBB4 and schizophrenia.