REN and familial juvenile hyperuricemic nephropathy type 1: Until its recent definition as a distinct disease entity, the following various terms were used to describe this disorder: uromodulin kidney disease, uromodulin-associated kidney disease, mucin-1 kidney disease, familial juvenile hyperuricemic nephropathy, medullary cystic kidney disease type 1, medullary cystic kidney disease type 2, and renin-associated kidney disease.