HomeGeneticsGeneCOQ6 gene
Back to Gene
COQ6 gene
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Gene

COQ6 gene

The COQ6 gene provides instructions for an enzyme that is a necessary component in the body's production of coenzyme Q10.

Normal Function

The COQ6 gene provides instructions for making an enzyme that carries out one step in the production of a molecule called coenzyme Q10. This molecule is essential for several critical functions in cells throughout the body:

  • Oxidative phosphorylation: A process in mitochondria that converts energy from food into a form cells can use.
  • Pyrimidine production: Creating building blocks for DNA, RNA, and energy molecules like ATP and GTP.
  • Antioxidant defense: Protecting cells from damage caused by free radicals, which are byproducts of energy production.

Health Conditions Related to Genetic Changes

Primary coenzyme Q10 deficiency

At least seven mutations in the COQ6 gene have been found to cause primary coenzyme Q10 deficiency. This rare disease usually becomes apparent in infancy or early childhood, but it can occur at any age. It can affect many parts of the body, most often the brain, muscles, and kidneys.

  • Mutations in the COQ6 gene result in an enzyme with an abnormal structure that impairs its function, leading to reduced production of coenzyme Q10.
  • A shortage of coenzyme Q10 impairs oxidative phosphorylation and increases the vulnerability of cells to damage from free radicals.
  • The deficiency may also disrupt the production of pyrimidines.
  • These cellular malfunctions help explain the variety of organs and tissues that can be affected by primary coenzyme Q10 deficiency.

Frequently Asked Questions

definitive diagnosis usually starts with a low plasma CoQ10 level measured by liquid chromatography–mass spectrometry. If CoQ10 is low, a muscle biopsy can be performed to assess mitochondrial enzyme activity and CoQ10 content. The gold standard is next‑generation sequencing of the COQ6 gene, often as part of a broader panel for mitochondrial disorders. Some centers also evaluate urinary organic acids for secondary markers of impaired pyrimidine synthesis.
The brain, kidneys, and skeletal muscles are most vulnerable. Neurologic signs include seizures, developmental delay, ataxia, and optic atrophy. Renal involvement often presents as protein‑urine (nephrotic syndrome) or chronic kidney disease. Muscular weakness, exercise intolerance, and myopathy are common. Early recognition of these symptoms prompts timely testing.
Yes, many patients benefit from oral CoQ10, usually 10–30 mg/kg/day divided into two or three doses. Some clinicians add antioxidants such as vitamin E or riboflavin. Treatment should start as early as possible, ideally before irreversible organ damage, and patients are monitored with repeat plasma CoQ10 levels and clinical assessment.
Because CoQ10 is fat‑soluble, a balanced diet with healthy fats (olive oil, nuts, fatty fish) supports endogenous synthesis. Avoid medications that deplete CoQ10 (e.g., statins) unless absolutely necessary. Moderate, regular exercise improves mitochondrial function but should be tailored to the patient’s tolerance. Regular monitoring of kidney function and neurologic status is essential.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

kontakt@hittavard.se

Ⓒ 2024. Alla rättigheter förbehålls av juxt ab

Sök
Om ossVillkor och policyVanliga frågorKontakta oss