Several type 2 diabetes mellitus (T2DM) susceptibility loci have been identified in or near GLIS3, PEPD, FITM2-R3HDML-HNF4A, KCNK16, MAEA, GCC1-PAX4, PSMD6, and ZFAND [11]. Here, PAX4 is linked to type 2 diabetes mellitus.