ADTKD-UMOD patients exhibited Ca of 9.58 ± 0.38 mg/dl (N = 72), compared to 9.41 ± 0.40 in ADTKD-MUC1 patients (N = 73; p < 0.01 by Student’s t test). This evidence concerns the gene MUC1 and autosomal dominant medullary cystic kidney disease with or without hyperuricemia.