Several genes have been implicated in MODY, including HNF4A, GCK, HNF1A, PDX1, HNF1B, NEUROD1, KLF11, CEL, PAX4, INS, BLK, ABCC8, KCNJ11, APPL, and WFS1 [21, 22, 24]. The gene discussed is WFS1; the disease is MODY.