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Proximal Myopathy due to m.5835G>A Mutation in Mitochondrial MT-TY Gene

C Simoncini1, V Montano1, G Alì2

  • 1Department of Clinical and Experimental Medicine, Neurological Clinic, University of Pisa, Pisa, Italy.

Case Reports in Neurological Medicine
|January 16, 2019
PubMed

Insights

Mitochondrial tRNA gene mutations cause various mitochondrial diseases. A specific m.5835G>A mutation in the mitochondrial Tyrosine tRNA gene was identified in a patient with proximal myopathy.

Area of Science:

  • Genetics
  • Molecular Biology
  • Neurology

Background:

  • Mitochondrial (mt) tRNA gene mutations are a significant cause of mitochondrial diseases.
  • These mutations are linked to diverse clinical presentations, often affecting the nervous system and muscles.

Observation:

  • Over 100 pathogenic tRNA mutations are documented, but genotype-phenotype correlations are often challenging.
  • Clinical phenotypes can be similar across different mutations, complicating diagnosis.

Findings:

  • The study reports a case of a 53-year-old Italian woman with proximal myopathy.
  • She was found to have the m.5835G>A mutation in the MT-TY gene, which codes for mitochondrial tRNA Tyrosine.

Implications:

  • This case highlights the complexity of genotype-phenotype correlations in mitochondrial tRNA mutations.
  • Further research is needed to better understand the specific impact of MT-TY mutations on clinical outcomes.

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