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Primary Coenzyme Q10 Deficiency-Related Ataxias.

Piervito Lopriore1,2, Marco Vista1, Alessandra Tessa3

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|April 27, 2024
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Primary coenzyme Q10 deficiencies (PCoQD) cause cerebellar ataxia, a treatable neurological syndrome. Early diagnosis is crucial for effective management of this condition.

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Area of Science:

  • Neurology
  • Genetics
  • Biochemistry

Background:

  • Cerebellar ataxia presents as imbalance and incoordination, often with other neurological signs.
  • Mitochondrial ataxias include primary coenzyme Q10 deficiencies (PCoQD) linked to the coenzyme Q10 biosynthetic pathway.
  • PCoQD is a treatable condition necessitating prompt diagnosis.

Purpose of the Study:

  • To review ataxias caused by primary coenzyme Q10 deficiencies (PCoQD).
  • To highlight the importance of timely diagnosis for potentially treatable PCoQD.

Main Methods:

  • Case presentation of an Italian woman with PCoQD due to a novel homozygous nonsense mutation in COQ8A.
  • Literature review of ataxias associated with primary coenzyme Q10 deficiencies.

Main Results:

  • Identified a novel homozygous nonsense mutation in COQ8A causing PCoQD in the presented case.
  • Established that variants in genes for coenzyme Q10 biosynthesis are a common cause of autosomal recessive PCoQD.

Conclusions:

  • Ataxias due to primary coenzyme Q10 deficiencies are a treatable neurological condition.
  • Accurate and timely diagnosis of PCoQD is essential for effective intervention.
  • Genetic variants in the coenzyme Q10 pathway are significant contributors to cerebellar ataxia.