Journal
NATURE GENETICS
Volume 38, Issue 5, Pages 525-527Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng1783
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Funding
- NIAMS NIH HHS [R01 AR041916, R01-AR41916] Funding Source: Medline
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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.
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