GNPDA2 (Glucosamine-6-Phosphate Deaminase 2): GNPDA2 is a gene involved in glucose metabolism and blood sugar regulation. It plays a role in converting glucosamine-6-phosphate into fructose-6-phosphate, an essential step in glucose utilization. Variations in GNPDA2 have been associated with the risk of type 2 diabetes and the regulation of glucose balance.