Article
Exercise intolerance due to a nonsense mutation in the mtDNA ND4 gene.
Annals of neurology - 1 Jun 1999
Andreu A L, Tanji K, Bruno C, Hadjigeorgiou G M, Sue C M, Jay C, Ohnishi T, Shanske S, Bonilla E, DiMauro S
Abstract excerpt
We report the first molecular defect in an NADH-dehydrogenase gene presenting as isolated myopathy. The proband had lifelong exercise intolerance but no weakness. A muscle biopsy showed cytochrome c oxidase (COX)-positive ragged-red fibers (RRFs), and analysis of the mitochondrial enzymes reveale...
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