Different types of enzymes are involved in regulating hyperglycaemia, such as α-glucosidase, α-amylase, and dipeptidyl peptidase IV (DPP-IV), and these are released by differing organs (salivary glands, the pancreas, and the small intestine) in the digestive tract [4,5]. The gene discussed is DPP4; the disease is Hyperglycemia.