학술논문
A novel mutation in the mitochondrial tRNAPro gene associated with late-onset ataxia, retinitis pigmentosa, deafness, leukoencephalopathy and complex I deficiency.
Document Type
Article
Author
Source
Subject
*HUMAN genetics
*TRANSFER RNA
*RETINITIS pigmentosa
*EAR diseases
*RETINAL degeneration
*HUMAN biology
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Language
ISSN
1018-4813
Abstract
We present a patient with ataxia, retinitis pigmentosa, dysarthria, neurosensorial deafness, nystagmus and leukoencephalopathy. A novel heteroplasmic G to A transition at nucleotide 15 975 was found, affecting the T arm of the mitochondrial (mt) tRNAPro gene. A biochemical analysis of respiratory chain enzymes in muscle revealed isolated complex I deficiency. This is the fourth pathogenic tRNAPro point mutation to be associated with an mt disorder. The result highlights the importance of molecular dissection of mtDNA in patients with defined mt disorder and confirms the clinical and biochemical heterogeneity associated with tRNAPro mutations.European Journal of Human Genetics (2009) 17, 1092–1096; doi:10.1038/ejhg.2009.12; published online 18 February 2009 [ABSTRACT FROM AUTHOR]