SLC2A2 and diabetes mellitus: In group (A), the complex Complex-2 consisted of many genes that are associated with multiple diabetic phenotypes each and are well-established in the context of diabetes, including the transcription factor NEUROD1, which is required for normal beta-cell development, and SLC2A2, which encodes GLUT2—the main glucose sensor in rodent beta-cells (but not human; McCulloch et al., 2011).