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Features include always present findings: Hyperammonemia, Hyperprolinemia, Hyperalaninemia, and Feeding difficulties and others; and common findings: Acute encephalopathy, Dystonia, Low plasma citrulline, and Paraparesis and others.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 10 | Acute encephalopathy, Dystonia, Generalized dystonia |
ATP5F1A encodes ATP synthase F1 subunit alpha (553 aa). Subunit alpha, of the mitochondrial membrane ATP synthase complex (F(1)F(0) ATP synthase or Complex V) that produces ATP from ADP in the presence of a proton gradient across the membrane which is generated by electron transport complexes of the respiratory chain (Probable). Highest expression in Heart Left Ventricle (327.3 TPM) and Muscle Skeletal (263.9 TPM).
Mitochondrial complex V (ATP synthase) deficiency, nuclear type 4A is associated with mutations in the ATP5F1A gene on chromosome 18.
The ATP5F1A protein participates in AFG3L2 degrades mitochondrial matrix proteins pathway.
ATP5F1A is classified as a druggable target (Cell Surface and Transporter categories) with score 1.3.
Genetic testing for ATP5F1A is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 5 always present features, 20 common features.
No clinical trials have been registered for mitochondrial complex V (ATP synthase) deficiency, nuclear type 4A.
5 publications have been identified in PubMed for mitochondrial complex V (ATP synthase) deficiency, nuclear type 4A. Research spans Basic Science / Preclinical (100%).
Zhang B (2026). [PMID: 41609019](https://pubmed.ncbi.nlm.nih.gov/41609019/). *Elife*. [Basic Science / Preclinical]
Xian C (2025). [PMID: 41053757](https://pubmed.ncbi.nlm.nih.gov/41053757/). *J Transl Med*. [Basic Science / Preclinical]
Dong H (2025). [PMID: 39878121](https://pubmed.ncbi.nlm.nih.gov/39878121/). *Autophagy*. [Basic Science / Preclinical]
Fielder SM (2025). [PMID: 40672495](https://pubmed.ncbi.nlm.nih.gov/40672495/). *medRxiv*. [Basic Science / Preclinical]
Cilleros-Holgado P (2024). [PMID: 38786005](https://pubmed.ncbi.nlm.nih.gov/38786005/). *Biomolecules*. [Basic Science / Preclinical]
Data assembled from 5 of 12 sources · Last updated Sep 17, 2026, 10:23 PM UTC
Online Mendelian Inheritance in Man
Digestive system |
3 |
Difficulty swallowing (dysphagia), Feeding difficulties, Chronic diarrhea |
Growth and development | 1 | Failure to thrive |
Blood and immune system | 1 | Low red blood cell count (anemia) |
Lab test results | 1 | Increased circulating lactate concentration |