The diagnosis of MODY is typically made at a young age (i.e., under 25 years of age) when there is a paucity of autoantibodies to pancreatic islet cells, a low insulin requirement, a family history of autosomal dominant diabetes, and the absence of a history of obesity or diabetic ketoacidosis (DKA) (6). The gene discussed is INS; the disease is obesity due to melanocortin 4 receptor deficiency.