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From the Department of Neurology (Drs. Gamez and Cervera) and Centre d Investigacions en Bioquimica i Biologia Molecular (Drs. Andreu and Schwartz, and L. Palenzuela), Hospital Vall d Hebron, Barcelona; Department of Pathology and Neuropathology (Dr. Navarro, S. Tejeira, and R. FernandezHojas) Hospital do Meixoeiro; Department of Clinical Neurophysiology (Dr. Fernandez), Hospital Xeral-Cies, Vigo, Spain; and H. Houston Merritt Clinical Research Center for Muscular Dystrophy and Related Diseases (Drs. Karadimas, DiMauro, and Hirano), Department of Neurology, Columbia University College of Physicians and Surgeons, New York.
Address correspondence and reprint requests to Dr. Josep Gamez, Department of Neurology, Hospital Gral, Vall dHebron, Passeig Vall dHebron, 119-125, 08035 Barcelona, Spain; e-mail: 12784jgc{at}comb.es
BACKGROUND: Fourteen genetically distinct forms of limb-girdle muscular dystrophy (LGMD) have been identified, including five types of autosomal dominant LGMD (AD-LGMD).
OBJECTIVE: To describe clinical, histologic, and genetic features of a large Spanish kindred with LGMD and apparent autosomal dominant inheritance spanning five generations.
METHOD: The authors examined 61 members of the family; muscle biopsies were performed on five patients. Linkage analysis assessed chromosomal loci associated with other forms of AD-LGMD.
RESULTS: A total of 32 individuals had weakness of the pelvic and shoulder girdles. Severity appeared to worsen in successive generations. Muscle biopsy findings were nonspecific and compatible with MD. Linkage analysis to chromosomes 5q31, 1q11-q21, 3p25, 6q23, and 7q demonstrated that this disease is not allelic to LGMD forms 1A, 1B, 1C, 1D, and 1E.
CONCLUSIONS: This family has a genetically distinct form of AD-LGMD. The authors are currently performing a genome-wide scan to identify the disease locus.
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L. Palenzuela, A.L. Andreu, J. Gamez, M.R. Vila, T. Kunimatsu, A. Meseguer, C. Cervera, I. Fernandez Cadenas, P.F.M. van der Ven, T.G. Nygaard, et al. A novel autosomal dominant limb-girdle muscular dystrophy (LGMD 1F) maps to 7q32.1-32.2 Neurology, August 12, 2003; 61(3): 404 - 406. [Abstract] [Full Text] [PDF] |
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