Human and mouse experiments have confirmed that mutations in ErbB4 lead to schizophrenia.[11] Interestingly, genetic association showed that the ErbB4 mutation in the population was closely related to both schizophrenia and diabetes,[11, 12] suggesting that ErbB4 may be the common pathogenic mechanism leading to schizophrenia and diabetes. Here, ERBB4 is linked to diabetes mellitus.