Maturity-Onset Diabetes of the Young, Type 1, also known as maturity-onset diabetes of the young type 1, is related to hyperinsulinism due to hnf1a deficiency and glucose intolerance. An important gene associated with Maturity-Onset Diabetes of the Young, Type 1 is HNF4A (Hepatocyte Nuclear Factor 4 Alpha), and among its related pathways/superpathways are Nervous system development and Glucose / Energy Metabolism. The drugs Allopurinol and Glipizide have been mentioned in the context of this disorder. Affiliated tissues include heart and kidney, and related phenotypes are flushing and maturity-onset diabetes of the young