OBJECTIVE: To characterize the clinical phenotype of LGMD2C in gypsies. BACKGROUND: Limb-girdle muscular dystrophy (LGMD) in gypsies of Western Europe is caused by a homozygous C283Y mutation on the same haplotype, suggesting a founder effect. METHODS: We performed clinical, laboratory, and muscle imaging studies of 40 patients. RESULTS: Mean age at onset was 5.3 years. One half of the patients had loss of ambulation by the age of 12; 13% still could walk after age 16. Calf hypertrophy, scapular winging, macroglossia, and lumbar hyperlordosis were common. Girdle, trunk, and proximal limb flexor muscles had earlier and more severe involvement. Cardiomyopathy was not observed. Five patients in the third decade of life required mechanical ventilation. Scoliosis was common in the nonambulatory stage. CONCLUSIONS: LGMD2C in gypsy patients with C283Y mutation presents a rather homogeneous phenotype, characterized by an initial Duchenne-like progressive course followed by a more prolonged survival rate possibly due to the absence of early respiratory impairment and cardiac failure.
OBJECTIVE: To characterize the clinical phenotype of LGMD2C in gypsies. BACKGROUND:Limb-girdle muscular dystrophy (LGMD) in gypsies of Western Europe is caused by a homozygous C283Y mutation on the same haplotype, suggesting a founder effect. METHODS: We performed clinical, laboratory, and muscle imaging studies of 40 patients. RESULTS: Mean age at onset was 5.3 years. One half of the patients had loss of ambulation by the age of 12; 13% still could walk after age 16. Calfhypertrophy, scapular winging, macroglossia, and lumbar hyperlordosis were common. Girdle, trunk, and proximal limb flexor muscles had earlier and more severe involvement. Cardiomyopathy was not observed. Five patients in the third decade of life required mechanical ventilation. Scoliosis was common in the nonambulatory stage. CONCLUSIONS:LGMD2C in gypsypatients with C283Y mutation presents a rather homogeneous phenotype, characterized by an initial Duchenne-like progressive course followed by a more prolonged survival rate possibly due to the absence of early respiratory impairment and cardiac failure.
Authors: Dana Gabrikova; Martin Mistrik; Jarmila Bernasovska; Alexandra Bozikova; Regina Behulova; Iveta Tothova; Sona Macekova Journal: J Appl Genet Date: 2013-08-31 Impact factor: 3.240
Authors: Samiah A Al-Zaidy; Vinod Malik; Kelley Kneile; Xiomara Q Rosales; Ana Maria Gomez; Sarah Lewis; Sayaka Hashimoto; Julie Gastier-Foster; Peter Kang; Basil Darras; Louis Kunkel; Jose Carlo; Zarife Sahenk; Steven A Moore; Robert Pyatt; Jerry R Mendell Journal: Mol Genet Genomic Med Date: 2015-01-08 Impact factor: 2.183