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Lookup NU author(s): Professor Bobby McFarland,
Professor Robert Taylor,
Professor Patrick Chinnery,
Emeritus Professor Doug Turnbull
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Disorders of the mitochondrial genome are an important cause of neurological disease, with patients presenting a variety of different phenotypes. Exercise induced muscle pain and myoglobinuria have been described with a number of metabolic defects, but because of the enormous variability of the mitochondrial genome identifying causative mitochondrial DNA mutations can be extremely difficult. Since mitochondrial tRNA genes were considered to be hot spots for mutation, sequencing was initially often confined to these genes. In a patient with symptoms and signs of exercise intolerance and myoglobinuria we originally ascribed pathogenicity to a mitochondrial-tRNAPhe mutation but here we show that the true pathogenic mutation was a novel mutation in the gene encoding subunit II of cytochrome c oxidase. We believe that this study demonstrates the importance of whole mitochondrial genome sequencing and of access to large sequence databases. © 2003 Elsevier B.V. All rights reserved.
Author(s): McFarland R, Taylor RW, Chinnery PF, Howell N, Turnbull DM
Publication type: Article
Publication status: Published
Journal: Neuromuscular Disorders
ISSN (print): 0960-8966
ISSN (electronic): 1873-2364
PubMed id: 14733964
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