Familial hypophosphatemic rickets causing ocular calcification and optic canal narrowing.

Autosomal-recessive hypophosphatemic rickets is associated with an inactivation mutation in the ENPP1 gene.

Human disorders of phosphate (Pi) handling and hypophosphatemic rickets have been shown to result from mutations in PHEX, FGF23, and DMP1, presenting as X-linked recessive, autosomal-dominant, and autosomal-recessive patterns, respectively. We present the identification of an inactivating mutation in the ecto-nucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) gene causing autosomal-recessiv...

Characterization of native FGF23 protein and mutant forms causing autosomal dominant hypophosphatemic rickets and familial tumoral calcinosis

Hypophosphatemic rickets developed after treatment with etidronate disodium in a patient with generalized arterial calcification in infancy

Ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) was originally reported as a responsible gene for generalized arterial calcification in infancy (GACI). Though the prognosis of GACI patients is poor because of myocardial infarction and heart failure in relation to medial calcification of the coronary arteries, some patients rescued by bisphosphonate treatment have been reported. Recen...

Hereditary hypophosphatemic rickets

Hereditary hypophosphatemic rickets (HHR) are a group of diseases characterized by renal phosphate wasting causing growth retardation, rickets and osteomalacia. The most common form is the X-linked dominant hypophosphatemic rickets caused by inactivating mutations in the PHEX gene. The other hereditary hypophosphatemic syndromes present a lower prevalence. These include autosomal dominant hypop...

Papilledema in the Setting of X-Linked Hypophosphatemic Rickets with Craniosynostosis

PURPOSE INTRODUCTION TO THE OPHTHALMIC LITERATURE OF AN UNUSUAL CAUSE OF PAPILLEDEMA AND SUBSEQUENT OPTIC ATROPHY: X-linked hypophosphatemic rickets (XLH). METHODS Case report of a 3-year-old female presenting with papilledema resulting from craniosynostosis secondary to XLH. RESULTS Early intervention with craniofacial surgery prevented the development of optic atrophy. CONCLUSION Childr...