Interestingly, fifteen genes of the DRD2 Co-Expression Network (ACR, ALDH3A1, BTN3A1, CALHM3, CES3, DRD2, EFCAB6, GALNT10, GATAD2A, GLI1, HIST1H1E, HIST1H3G, IL31, RBM6, SLC28A1) are located within schizophrenia-associated loci in the latest Psychiatric Genetic Consortium investigation36. Here, IL31 is linked to schizophrenia.