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Hypophosphatemic rickets

Definition:

Hypophosphataemic rickets, also known as vitamin D resistant rickets, is a group of genetic disorders characterized by defective reabsorption of inorganic phosphorus by the renal tubules resulting in hypophosphatemia and rickets associated with mineralization defect. Fibroblast growth factor-23 (FGF23) regulates phosphate reabsorption in the kidney and therefore plays an essential role in phosphate balance in humans. There is a host of defects that ultimately lead to excess FGF23 levels and thereby cause renal phosphate wasting and hypophosphatemic rickets.

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