A Recurrent Mutation in the BMP Type I Receptor ACVR1 Causes Inherited and Sporadic Fibrodysplasia Ossificans Progressiva

Nat Genet. 2006 May;38(5):525-7. doi: 10.1038/ng1783. Epub 2006 Apr 23.

Abstract

Fibrodysplasia ossificans progressiva (FOP) is a rare autosomal dominant disorder of skeletal malformations and progressive extraskeletal ossification. We mapped FOP to chromosome 2q23-24 by linkage analysis and identified an identical heterozygous mutation (617G --> A; R206H) in the glycine-serine (GS) activation domain of ACVR1, a BMP type I receptor, in all affected individuals examined. Protein modeling predicts destabilization of the GS domain, consistent with constitutive activation of ACVR1 as the underlying cause of the ectopic chondrogenesis, osteogenesis and joint fusions seen in FOP.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Activin Receptors, Type I / chemistry
  • Activin Receptors, Type I / genetics*
  • Amino Acid Sequence
  • Animals
  • Chromosomes, Human, Pair 2
  • Female
  • Humans
  • Male
  • Molecular Sequence Data
  • Mutation*
  • Myositis Ossificans / genetics*
  • Pedigree
  • RNA, Messenger / genetics
  • Sequence Homology, Amino Acid

Substances

  • RNA, Messenger
  • ACVR1 protein, human
  • Activin Receptors, Type I