Variable phenotype including Leigh syndrome with a 9185T>C mutation in the MTATP6 gene

Neuropediatrics. 2007 Dec;38(6):313-6. doi: 10.1055/s-2008-1065355.


We describe 15 members of a Caucasian family with an apparently homoplasmic T-->C mutation at nucleotide position 9185 (9185T>C) in the mtDNA encoded MTATP6 (ATPase 6) gene. The clinical phenotype is extremely variable and includes late-onset Leigh syndrome (LS), isolated demyelinating peripheral neuropathy and neurogenic muscle weakness, ataxia and retinitis pigmentosa (NARP). Following recent reports of this same mutation in a single case and in a family with late-onset LS and NARP-like features, our paper emphasises the role of MTATP6 in LS and expands the associated clinical phenotype further.

MeSH terms

  • Adolescent
  • Adult
  • DNA Mutational Analysis
  • Family Health*
  • Female
  • Humans
  • Leigh Disease / genetics*
  • Leigh Disease / physiopathology
  • Male
  • Mitochondrial Proton-Translocating ATPases / genetics*
  • Mutation*
  • Phenotype*


  • MT-ATP6 protein, human
  • Mitochondrial Proton-Translocating ATPases