Autosomal dominant medullary cystic kidney disease is a chronic tubulointerstitial nephropathy, which belongs to a heterogeneous group of inherited tubulo-interstitial nephritis. Less than 60 families affected have been described. Clinical onset and course are insidious. Symptoms typically appear at an average age of 28 years, when the urinary concentrating ability is markedly reduced, producing polyuria and stable low urinary osmolality in the first morning urine and lack of any compensatory effect after endonasal desmopressin. End-stage renal disease typically occurs in the third-fifth decade of life or even later. Two genes have been linked to the disease: MCKD1 (1q21) and MCKD2 (in 16p12, where the gene UMOD, encoding uromodulin or Tamm-Horsfall protein, has been identified as responsible of the disease). [from
SNOMEDCT_US]