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Mol Genet Metab. 2009 Nov;98(3):300-4. doi: 10.1016/j.ymgme.2009.06.012. Epub 2009 Jun 25.

A novel mutation of the RRM2B gene in an infant with early fatal encephalomyopathy, central hypomyelination, and tubulopathy.

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  • 1Department of Pediatrics, Medical University Graz, Graz, Austria.

Abstract

A baby-girl with congenital deafness was admitted at the age of 8 weeks for lack of head control, truncal hypotonia and echodense kidneys. At the age of 10 weeks cranial MRI showed a normal brain structure, generalized mild hypomyelination but no lactate peak on (1)H MR spectroscopy. A combined defect of respiratory chain enzyme complexes I, III, IV and V and severe depletion of mitochondrial DNA was found in skeletal muscle tissue. Genetic analysis revealed a novel mutation c.368T>C (p.Phe123Ser) in the RRM2B gene in the expressed maternal allele. The paternal allele was present in genomic DNA, but was not expressed as mature mRNA.

PMID:
19616983
[PubMed - indexed for MEDLINE]
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