Autosomal dominant hypophosphataemic rickets is associated with mutations in FGF23

Nat Genet. 2000 Nov;26(3):345-8. doi: 10.1038/81664.

Abstract

Proper serum phosphate concentrations are maintained by a complex and poorly understood process. Identification of genes responsible for inherited disorders involving disturbances in phosphate homeostasis may provide insight into the pathways that regulate phosphate balance. Several hereditary disorders of isolated phosphate wasting have been described, including X-linked hypophosphataemic rickets (XLH), hypophosphataemic bone disease (HBD), hereditary hypophosphataemic rickets with hypercalciuria (HHRH) and autosomal dominant hypophosphataemic rickets (ADHR). Inactivating mutations of the gene PHEX, encoding a member of the neutral endopeptidase family of proteins, are responsible for XLH (refs 6,7). ADHR (MIM 193100) is characterized by low serum phosphorus concentrations, rickets, osteomalacia, lower extremity deformities, short stature, bone pain and dental abscesses. Here we describe a positional cloning approach used to identify the ADHR gene which included the annotation of 37 genes within 4 Mb of genomic sequence. We identified missense mutations in a gene encoding a new member of the fibroblast growth factor (FGF) family, FGF23. These mutations in patients with ADHR represent the first mutations found in a human FGF gene.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Abnormalities, Multiple / genetics
  • Amino Acid Sequence
  • Chromosomes, Human, Pair 12 / genetics*
  • DNA Mutational Analysis
  • Europe
  • Female
  • Fibroblast Growth Factors / deficiency
  • Fibroblast Growth Factors / genetics*
  • Fibroblast Growth Factors / physiology
  • Genes*
  • Genes, Dominant*
  • Genetic Heterogeneity
  • Humans
  • Hypophosphatemia, Familial / genetics*
  • Lod Score
  • Male
  • Molecular Sequence Data
  • Pedigree
  • Point Mutation
  • Reverse Transcriptase Polymerase Chain Reaction
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • United States

Substances

  • Fibroblast Growth Factors
  • fibroblast growth factor 23

Associated data

  • GENBANK/AF263536
  • GENBANK/AF263537
  • GENBANK/AF263538
  • GENBANK/AF263541
  • GENBANK/AJ272205
  • GENBANK/AJ272206
  • GENBANK/AJ272207