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Features include always present findings: Kyphoscoliosis, Axial dystonia, Stiff neck, and Increased CSF lactate and others. 15 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 4 | Encephalopathy, Difficulty swallowing (dysphagia), Dystonia |
NDUFS3 encodes NADH:ubiquinone oxidoreductase core subunit S3 (264 aa). Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) which catalyzes electron transfer from NADH through the respiratory chain, using ubiquinone as an electron acceptor. Highest expression in Muscle Skeletal (78.6 TPM) and Brain Cerebellar Hemisphere (77.7 TPM).
Mitochondrial complex I deficiency, nuclear type 8 is associated with mutations in the NDUFS3 gene on chromosome 11.
The NDUFS3 protein participates in MT-ND4 is translated pathway.
NDUFS3 is classified as a druggable target (Enzyme category) with score 0.3.
Genetic testing for NDUFS3 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 6 always present features.
No clinical trials have been registered for mitochondrial complex I deficiency, nuclear type 8.
5 publications have been identified in PubMed for mitochondrial complex I deficiency, nuclear type 8. Research spans Basic Science / Preclinical (60%), Other (20%), and Review / Meta-Analysis (20%).
Xu M (2026). [PMID: 41380592](https://pubmed.ncbi.nlm.nih.gov/41380592/). *Redox Biol*. [Basic Science / Preclinical]
Kaiyrzhanov R (2025). [PMID: 39963288](https://pubmed.ncbi.nlm.nih.gov/39963288/). *Brain Commun*. [Other]
Wang M (2025). [PMID: 39495652](https://pubmed.ncbi.nlm.nih.gov/39495652/). *Adv Sci (Weinh)*. [Basic Science / Preclinical]
Chen YL (2025). [PMID: 40025060](https://pubmed.ncbi.nlm.nih.gov/40025060/). *Cell Death Discov*. [Basic Science / Preclinical]
Garone C (2025). [PMID: 40994010](https://pubmed.ncbi.nlm.nih.gov/40994010/). *Mol Ther*. [Review / Meta-Analysis]
Data assembled from 5 of 12 sources · Last updated Sep 20, 2026, 11:21 AM UTC
Online Mendelian Inheritance in Man
Genetic and Rare Diseases Info Center
2 |
Difficulty swallowing (dysphagia), Pancreatitis |
Lab test results | 2 | Increased circulating lactate concentration, Decreased activity of mitochondrial complex I |
Bones and joints | 1 | Kyphoscoliosis |
Muscles | 1 | Generalized hypotonia |
Lungs and breathing | 1 | Difficulty breathing (respiratory insufficiency) |
Eyes | 1 | Optic disc pallor |