Novel mutations in the thymidine kinase 2 gene (TK2) associated with fatal mitochondrial myopathy and mitochondrial DNA depletion.

Abstract excerpt

We describe the clinical, morphological and genetic findings in two siblings with the myopathic form of mitochondrial DNA depletion syndrome (MIM 251880). Sequencing of the thymidine kinase-2 gene revealed two heterozygous missense mutations, a C-->T mutation at nucleotide 191 resulting in a change of threonine to methionine at residue 64 in exon 3, and a C-->T mutation at nucleotide 547 resulting in an arginine...

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