Phenotypic variation in a large Japanese family with Miyoshi myopathy with nonsense mutation in exon 19 of dysferlin gene.

Abstract excerpt

Miyoshi myopathy, an autosomal recessive muscular dystrophy involving distal muscles, is caused by dysferlin mutations. We present clinical and genetic studies of two men and six women, aged 25-83 years, from a Japanese family with consanguineous marriages. Onset was between ages 17 and 59 years. Six of the patients had muscle involvement typical of Miyoshi myopathy, one initially had severe proximal muscle...

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