KCNJ18 and autoimmune pancreatitis: The most frequently mutated genes in our AIP patients were CNTNAP3, CNTNAP3B, FCGBP, FOXD4L4, FRG2C, GOLGA6L2, GPRIN2, KCNJ18, MUC12, MUC3A, NBPF26, and OR10G2.