A novel m.3395A>G missense mutation in the mitochondrial ND1 gene associated with the new tRNA(Ile) m.4316A>G mutation in a patient with hypertrophic cardiomyopathy and profound hearing loss.
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Chamkha I, Mkaouar-Rebai E, Aloulou H, Chabchoub I, Kifagi C, Fendri-Kriaa N, Kammoun T, Hachicha M, Fakhfakh F
A novel m.3395A>G missense mutation in the mitochondrial ND1 gene associated with the new tRNA(Ile) m.4316A>G mutation in a patient with hypertrophic cardiomyopathy and profound hearing loss.
Biochem Biophys Res Commun. 2011 Jan 7;404(1):504-10. doi: 10.1016/j.bbrc.2010.12.012. Epub 2010 Dec 6.
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- 21144833 [ View in PubMed]
- Abstract
Mitochondria are essential for early cardiac development and impaired regulation of mitochondrial function was implicated in congenital heart diseases. We described a newborn girl with hypertrophic cardiomyopathy and profound hearing loss. The mtDNA mutational analysis revealed the presence of known polymorphisms associated to cardiomyopathy and/or hearing loss, and 2 novel heteroplasmic mutations: m.3395A>G (Y30C) occurring in a highly conserved aminoacid of the ND1 gene and the m.4316A>G located in the residue A54 of the tRNA(Ile) gene. These 2 novel variations were absent in 150 controls. All these variants may act synergistically and exert a cumulative negative effect on heart function to generate the cardiomyopathy.