Molecular basis : Caused by mutation in the solute carrier family 34 (sodium phosphate cotransporter),
member 1 gene (SLC34A1, 182309.0003);
Laboratory abnormalities : Hypophosphatemia; Increased serum alkaline phosphatase activity of skeletal origin; 1,25-dihydroxyvitamin D was elevated in childhood but deficient in adulthood; Hypercalciuria (in childhood); Glucosuria; Aminoaciduria, generalized; Urinary excretion of low-molecular-weight proteins, mild; Increased fractional excretion of uric acid;