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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Novel mitochondrial DNA ND5 mutation in a patient with clinical features of MELAS and MERRF.

BACKGROUND: The mitochondrial DNA gene encoding subunit 5 of complex I (ND5) has turned out to be a hot spot for mutations associated with mitochondrial encephalomyopathy with lactic acidosis and strokelike episodes (MELAS) and various overlap syndromes. OBJECTIVE: To describe a novel mutation in the ND5 gene in a young man man with an overlap syndrome of MELAS and myoclonus epilepsy with ragged-red fibers. DESIGN: Case report. PATIENT: A 25-year-old man had recurrent strokes, seizures, and myoclonus. His mother also had multiple strokes. A muscle biopsy specimen showed no ragged-red fibers but several strongly succinate dehydrogenase-reactive blood vessels. RESULTS: Biochemical analysis showed isolated complex I deficiency and molecular analysis revealed a novel heteroplasmic mutation (G13042A) in the ND5 gene. CONCLUSIONS: These data confirm that ND5 is a genetic hot spot for overlap syndromes, including MELAS and strokelike and myoclonus epilepsy with ragged-red fibers.[1]

References

  1. Novel mitochondrial DNA ND5 mutation in a patient with clinical features of MELAS and MERRF. Naini, A.B., Lu, J., Kaufmann, P., Bernstein, R.A., Mancuso, M., Bonilla, E., Hirano, M., DiMauro, S. Arch. Neurol. (2005) [Pubmed]
 
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