Severe limb girdle muscular dystrophy in Spanish gypsies: further evidence for a founder mutation in the γ-sarcoglycan gene
European Journal of Human Genetics volume 6, pages 396–399 (1998)Cite this article
1147 Accesses
19 Citations
3 Altmetric
Limb-girdle muscular dystrophy type 2C (LGMD2C) is an autosomal recessive muscular dystrophy with primary γ-sarcoglycan deficiency, generally associated with a severe clinical course. γ-sarcoglycan, a 35 kDa dystrophin-associated protein, is encoded by a single gene on chromosome 13q12. Six different mutations have been described in that gene, and it has been proved they are the origin of the disease. One of these mutations (C283Y), a G → A transition in codon 283, was recently and exclusively identified in Gypsy patients from different European countries. We report the study of 11 LGMD2C unrelated Gypsy families (nine Spanish and two Portugese). The muscle biopsies of these patients showed a drastically decreased immunostaining with α and γ-sarcoglycan antibodies. All the patients were homozygous for C283Y missense mutation, and all affected chromosomes (patients and heterozygous relatives) carried the allele 5 (112 bp) of the intragenic microsatellite D13S232. Unexpectedly, this allele is most frequent in the Caucasian population but not in the normal Gypsy population. The clinical severity of all patients demonstrates that the C283Y missense mutation in a homozygous state causes a severe LGMD2C (DMD-like). The elevated number of families ascertained let us assume that LGMD2C is prevalent in the Gypsy population, and that all the families have inherited a founding mutation.
Similar content being viewed by others Author information Authors and AffiliationsUnitat de Genètica Molecular, Hospital Sant Pau, Barcelona, Spain
Adriana Lasa, Carles de Diego, Maria José Rodríguez, Montserrat Baiget & Pia Gallano
NSERM 129, Institut Cochin de Génétique Moléculaire, Paris, France
Federica Piccolo, Marc Jeanpierre & Jean Claude Kaplan
Servei de Neurologia, Hospital Sant Joan de Deu, Barcelona, Spain
Jaume Colomer
Association Française centre les Myopathies, Evry, Paris, France
Jon Andoni Urtizberea
Correspondence to Pia Gallano.
About this article Cite this articleLasa, A., Piccolo, F., de Diego, C. et al. Severe limb girdle muscular dystrophy in Spanish gypsies: further evidence for a founder mutation in the γ-sarcoglycan gene. Eur J Hum Genet 6, 396–399 (1998). https://doi.org/10.1038/sj.ejhg.5200197
Received: 23 October 1997
Revised: 12 January 1998
Accepted: 16 January 1998
Published: 19 October 1998
Issue Date: 01 July 1998
DOI: https://doi.org/10.1038/sj.ejhg.5200197
Skeletal Muscle (2020)
BMC Medical Genetics (2001)
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4