Submit Data |  Help |  Video Tutorials |  News |  Publications |  FTP Download |  REST API |  Citing RGD |  Contact   

An autosomal dominant hypophosphatemic rickets phenotype in a Tunisian family caused by a new FGF23 missense mutation.

Authors: Gribaa, M  Younes, M  Bouyacoub, Y  Korbaa, W  Ben Charfeddine, I  Touzi, M  Adala, L  Mamay, O  Bergaoui, N  Saad, A 
Citation: Gribaa M, etal., J Bone Miner Metab. 2010;28(1):111-5. doi: 10.1007/s00774-009-0111-5. Epub 2009 Aug 5.
Pubmed: (View Article at PubMed) PMID:19655082
DOI: Full-text: DOI:10.1007/s00774-009-0111-5

Autosomal dominant hypophosphatemic rickets (ADHR) is a rare disease, characterized by isolated renal phosphate wasting, hypophosphatemia, and inappropriately normal 1,25-dihydroxyvitamin D(3) (calcitriol) levels. This syndrome involves rickets with bone deformities in childhood and osteomalacia, osteoporosis, articular and para-articular pain, and fatigue in adulthood. It is caused by mutations in a consensus sequence for proteolytic cleavage of the FGF23 protein. Normally, this protein actively regulates phosphate homeostasis. Here we report a Tunisian family in which one parent and three children show clinical and biological features of ADHR. Mutation analysis of the FGF23 gene finds a heterozygous substitution of the C at position 526 by a T (526 C --> T), leading to an amino acid replacement of the FGF23 protein (R176W) at position 176. This causative new mutation is located in the consensus sequence for the proteolytic cleavage domain. These results confirm the importance of this site in FGF23 function and its essential role in ADHR physiopathology.


Disease Annotations
Objects Annotated

Additional Information

CRRD Object Information
CRRD ID: 10044239
Created: 2015-06-04
Species: All species
Last Modified: 2015-06-04
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.