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Any coenzyme Q10 deficiency in which the cause of the disease is a mutation in the COQ7 gene.
Features include: Hearing loss (hearing impairment), Pulmonary hypoplasia, Flexion contracture, and Polyneuropathy and 19 more.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Muscles | 4 | Flexion contracture, Low muscle tone (hypotonia), Generalized hypotonia |
COQ7 encodes coenzyme Q7, hydroxylase (217 aa). Catalyzes the hydroxylation of the 5-methoxy-2-methyl-3-(all-trans-polyprenyl)benzoquinone at the C6 position and participates in the biosynthesis of ubiquinone (Probable). Highest expression in Ovary (20.8 TPM) and Testis (19.7 TPM).
Primary coenzyme Q10 deficiency 8 is associated with mutations in the COQ7 gene on chromosome 16.
The COQ7 protein participates in COQ7:COQ9 octamer, COQ7:COQ9 octamer hydroxylates DMQ10H2, and COQ3 methylates DeMQ10H2 pathways.
COQ7 is classified as a druggable target (Enzyme category) with score 0.0.
Genetic testing for COQ7 is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for primary coenzyme Q10 deficiency 8 has been reported in the published literature.
No clinical trials have been registered for primary coenzyme Q10 deficiency 8.
12 publications have been identified in PubMed for primary coenzyme Q10 deficiency 8. Research spans Case Report / Case Series (33%), Review / Meta-Analysis (25%), and Basic Science / Preclinical (25%).
Research Type | Count | % of Total |
|---|---|---|
Patient case studies | 4 | 33% |
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 7:50 AM UTC
Online Mendelian Inheritance in Man
3 |
Polyneuropathy, Pain, Global developmental delay |
Kidneys and urinary system | 3 | Renal dysplasia, Elevated creatinine (kidney function marker) (elevated circulating creatinine concentration), Abnormal renal corticomedullary differentiation |
Lungs and breathing | 2 | Pulmonary hypoplasia, Respiratory distress |
Growth and development | 2 | Postnatal growth retardation, Intrauterine growth retardation |
Heart and blood vessels | 2 | Hypertension, Thickened left heart wall (left ventricular hypertrophy) |
Ears | 1 | Hearing loss (hearing impairment) |
Digestive system | 1 | Feeding difficulties |
Eyes | 1 | Visual impairment |
Lab test results | 1 | Elevated creatinine (kidney function marker) (elevated circulating creatinine concentration) |
Research summaries
3 |
25% |
Laboratory research | 3 | 25% |
Other research | 1 | 8% |
Testing and diagnosis research | 1 | 8% |
Mantle D (2026). [PMID: 42074169](https://pubmed.ncbi.nlm.nih.gov/42074169/). *Int J Mol Sci*. [Review / Meta-Analysis]
Klaučo F (2026). [PMID: 42073991](https://pubmed.ncbi.nlm.nih.gov/42073991/). *Int J Mol Sci*. [Basic Science / Preclinical]
Fontaine F (2026). [PMID: 41750371](https://pubmed.ncbi.nlm.nih.gov/41750371/). *Biomolecules*. [Review / Meta-Analysis]
Hahn W (2026). [PMID: 41716779](https://pubmed.ncbi.nlm.nih.gov/41716779/). *Mol Genet Metab Rep*. [Case Report / Case Series]
Morita K (2026). [PMID: 41411216](https://pubmed.ncbi.nlm.nih.gov/41411216/). *Nephron*. [Case Report / Case Series]
Lin KY (2025). [PMID: 39225810](https://pubmed.ncbi.nlm.nih.gov/39225810/). *Pediatr Nephrol*. [Case Report / Case Series]
Habib C (2025). [PMID: 39656276](https://pubmed.ncbi.nlm.nih.gov/39656276/). *Pediatr Nephrol*. [Review / Meta-Analysis]
Sharma A (2025). [PMID: 40119238](https://pubmed.ncbi.nlm.nih.gov/40119238/). *Neurol Sci*. [Other]
Fernández-Ayala DJM (2025). [PMID: 39864756](https://pubmed.ncbi.nlm.nih.gov/39864756/). *Free Radic Biol Med*. [Basic Science / Preclinical]
Fabra MA (2024). [PMID: 38973597](https://pubmed.ncbi.nlm.nih.gov/38973597/). *J Inherit Metab Dis*. [Basic Science / Preclinical]