title: Collagen VI related muscle disorders.
abstract: Mutations in the genes encoding collagen VI (COL6A1, COL6A2, and COL6A3) cause Bethlem myopathy (BM) and Ullrich congenital muscular dystrophy (UCMD), two conditions which were previously believed to be completely separate entities. BM is a relatively mild dominantly inherited disorder characterised by proximal weakness and distal joint contractures. UCMD was originally described as an autosomal recessive condition causing severe muscle weakness with proximal joint contractures and distal hyperlaxity. Here we review the clinical phenotypes of BM and UCMD and their diagnosis and management, and provide an overview of the current knowledge of the pathogenesis of collagen VI related disorders.
authors.affiliation: Institute of Human Genetics, University of Newcastle upon Tyne, International Centre for Life, Central Parkway, Newcastle upon Tyne, NE1 3BZ. anne.lampe@ncl.ac.uk
authors.forename: A K
authors.initials: AK
authors.lastname: Lampe
authors.forename: K M D
authors.initials: KM
authors.lastname: Bushby
mesh_terms: D024142:Collagen Type VI / Q000235:genetics / Q000378:metabolism*; D049310:Distal Myopathies / Q000175:diagnosis / Q000235:genetics / Q000378:metabolism / Q000473:pathology / Q000628:therapy; D005817:Genetic Counseling; D008040:Genetic Linkage; D023281:Genomics; D006801:Humans; D007150:Immunohistochemistry; D008954:Models, Biological; D008957:Models, Genetic; D008969:Molecular Sequence Data; D009135:Muscular Diseases / Q000175:diagnosis / Q000235:genetics / Q000628:therapy; D009136:Muscular Dystrophies / Q000151:congenital / Q000175:diagnosis / Q000235:genetics / Q000378:metabolism / Q000473:pathology / Q000628:therapy; D010641:Phenotype; D011296:Prenatal Diagnosis
chemical_list: D024142:Collagen Type VI