Oligomeganephronia, also known as oligomeganephronic renal hypoplasia, is related to renal cysts and diabetes syndrome and papillorenal syndrome. An important gene associated with Oligomeganephronia is PAX2 (Paired Box 2), and among its related pathways/superpathways are Cell junction organization and Primary focal segmental glomerulosclerosis (FSGS). Affiliated tissues include kidney and cortex, and related phenotypes are proteinuria and renal insufficiency