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Eur J Hum Genet. 2003 Jan;11(1):102-4.

Four novel thymidine phosphorylase gene mutations in mitochondrial neurogastrointestinal encephalomyopathy syndrome (MNGIE) patients.

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Department of Medical Biology, Faculty of Medicine, Hacettepe University Ankara, Turkey.

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  • Eur J Hum Genet. 2003 Jul;11(7):551.


Mitochondrial neurogastrointestinal encephalomyopathy syndrome (MNGIE) is a rare autosomal recessive neurologic disorder characterised by multiple mitochondrial DNA deletions. In this study, five Turkish MNGIE patients are investigated for mtDNA deletions and TP gene mutations. The probands presented all the clinical criteria of the typical MNGIE phenotype; the muscle biopsy specimens also confirmed the diagnosis with ragged red fibres and cytochrome C oxidase (COX) negative fibres. The mitochondrial DNA analysis revealed no deletions in the probands' skeletal muscle samples. We have identified four novel mutations in the TP gene while one of the patients also harboured a nucleotide change, which was previously reported as a mutation.

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