title: A recurrent mutation c.617G>A in the ACVR1 gene causes fibrodysplasia ossificans progressiva in two Chinese patients.
abstract: Fibrodysplasia ossificans progressiva (FOP; OMIM 135100) is a rare heritable disorder of connective tissue characterized by congenital malformations of the great toes and recurrent episodes of painful soft tissue swelling that lead to heterotopic ossifications. Recent studies have shown that the ACVR1 (activin A receptor, type I; OMIM 102576) gene, which encodes the BMP type I receptor protein, is responsible for this disease. We observed two Chinese patients who suffered from progressive pain and ankylosis of major joints with congenital bilateral hallus valgus malformation, neck stiffness, and several posttraumatic ossified lesions on the head and dorsum. Both patients were diagnosed as having FOP. This study aimed to investigate the ACVR1 gene mutation in Chinese FOP patients. Direct sequence analysis of genomic DNA and restriction enzyme digestion demonstrated the presence of a single heterozygous c.617G>A (p.R206H) mutation in the ACVR1 gene in both patients. This mutation is first reported in Chinese patients with FOP and it was de novo in both affected families.
authors.affiliation: Department of Endocrinology, Key Laboratory of Endocrinology, Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Sun
authors.forename: Weibo
authors.initials: W
authors.lastname: Xia
authors.forename: Yan
authors.initials: Y
authors.lastname: Jiang
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Xing
authors.forename: Mei
authors.initials: M
authors.lastname: Li
authors.forename: Ou
authors.initials: O
authors.lastname: Wang
authors.forename: Huabing
authors.initials: H
authors.lastname: Zhang
authors.forename: Yingying
authors.initials: Y
authors.lastname: Hu
authors.forename: Huaicheng
authors.initials: H
authors.lastname: Liu
authors.forename: Xunwu
authors.initials: X
authors.lastname: Meng
authors.forename: Xueying
authors.initials: X
authors.lastname: Zhou
mesh_terms: D030201:Activin Receptors, Type I / Q000235:genetics*; D000293:Adolescent; D017668:Age of Onset; D019943:Amino Acid Substitution / Q000235:genetics; D044466:Asian People / Q000235:genetics; D001842:Bone and Bones / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D004252:DNA Mutational Analysis; D018450:Disease Progression; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005820:Genetic Testing; D005838:Genotype; D006579:Heterozygote; D006801:Humans; D008297:Male; D020125:Mutation, Missense / Q000235:genetics*; D009221:Myositis Ossificans / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology
chemical_list: D005819:Genetic Markers; C425423:ACVR1 protein, human; D030201:Activin Receptors, Type I