APPL1 and MODY: To date, 14 types of MODY (MODY1 through MODY14) have been identified, each associated with mutations in a specific gene: HNF4A, GCK, HNF1A, PDX1, HNF1B, NEUROD1, KLF11, CEL, PAX4, INS, BLK, KCNJ11, ABCC8, and APPL1 [2,3,4].