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Clinical and molecular studies in a unique family with autosomal dominant limb-girdle muscular dystrophy and Paget disease of bone.


ABSTRACT: PURPOSE:To characterize the clinical features and perform linkage analysis of candidate loci in a large Illinois family with autosomal dominant limb-girdle muscular dystrophy (LGMD) and Paget disease of bone (PDB). METHODS:The family includes 11 affected individuals (8 M, 3 F). Clinical, biochemical and radiologic evaluations were performed to delineate clinical features of the disorder. Linkage analysis with polymorphic markers was performed for previously identified LGMD, PDB and cardiomyopathy loci. RESULTS:Onset of PDB is early, at a mean age of 35 y, with classic distribution involving the spine, pelvis, and skull. Muscle weakness and atrophy is progressive with mildly elevated to normal creatine phosphokinase levels. Muscle biopsy in the oldest male revealed vacuolated fibers, however, in others revealed nonspecific myopathy. Affected individuals die from progressive muscle weakness, and respiratory and cardiac failure in their 40s-60s. Linkage analysis excluded autosomal dominant and recessive LGMD, PDB, and cardiomyopathy loci. CONCLUSION:Autosomal dominant LGMD associated with PDB is an unusual disorder. Linkage analysis indicates a unique locus in this family.

SUBMITTER: Kimonis VE 

PROVIDER: S-EPMC6173187 | biostudies-literature | 2000 Jul-Aug

REPOSITORIES: biostudies-literature

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Clinical and molecular studies in a unique family with autosomal dominant limb-girdle muscular dystrophy and Paget disease of bone.

Kimonis V E VE   Kovach M J MJ   Waggoner B B   Leal S S   Salam A A   Rimer L L   Davis K K   Khardori R R   Gelber D D  

Genetics in medicine : official journal of the American College of Medical Genetics 20000701 4


<h4>Purpose</h4>To characterize the clinical features and perform linkage analysis of candidate loci in a large Illinois family with autosomal dominant limb-girdle muscular dystrophy (LGMD) and Paget disease of bone (PDB).<h4>Methods</h4>The family includes 11 affected individuals (8 M, 3 F). Clinical, biochemical and radiologic evaluations were performed to delineate clinical features of the disorder. Linkage analysis with polymorphic markers was performed for previously identified LGMD, PDB an  ...[more]

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