A rare, syndromic diabetes mellitus characterized by partial pancreatic agenesis, diabetes mellitus, and heart anomalies (including transposition of the great vessels, ventricular or atrial septal defects, pulmonary stenosis, or patent ductus arteriosis). The disease is Monarch Disease Ontology entry MONDO_0010802 (pancreatic hypoplasia-diabetes-congenital heart disease syndrome). Also known as: Yorifuji-Okuno syndrome.