A number of genes that were found to overlap between SCZ and T2DM have already been associated with either one of these two disorders, particularly DGKZ, APRT, KCTD13, and PTGS2 for SCZ and RALY, FLNA, NAMPT, PTGS2, BCR, APRT, and DGKZ for T2DM, as reported in the DisGeNET database (https://www.disgenet.org/ on 10 January 2021). The gene discussed is APRT; the disease is type 2 diabetes mellitus.