Combined Oxidative Phosphorylation Defect Type 4 C1857682
A rare mitochondrial disorder affecting the body's energy production at the cellular level. Can cause problems with muscles, nerves, brain, and heart. Treatment focuses on managing specific symptoms and supportive care.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Lactic acidosis
(metabolic)Muscle weakness
(metabolic)Cardiomyopathy
(metabolic)Sensorineural hearing loss
(metabolic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Coenzyme Q10 Supplementation
CoQ10 serves as an electron carrier in the mitochondrial electron transport chain. Supplementation may improve ATP production in patients with oxidative phosphorylation defects.
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
L-Carnitine Supplementation
Carnitine facilitates fatty acid transport into mitochondria for energy production. Supplementation helps compensate for impaired oxidative phosphorylation in muscle and cardiac tissue.
Additional treatment options
Mitochondrial-Friendly Diet
A diet rich in easily metabolized carbohydrates and moderate protein, with careful fat restriction, supports mitochondrial function. Small, frequent meals may help maintain energy levels.
dietaryRiboflavin B2 Supplementation
Riboflavin is a precursor to FAD, a critical cofactor in mitochondrial complex I and II. High-dose supplementation may improve electron transport chain function.
complementaryMultisystem Function Monitoring
Regular cardiac, hepatic, and neurological assessments detect organ-specific mitochondrial dysfunction. Lactate levels and metabolic screening guide disease management.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Combined Oxidative Phosphorylation Defect Type 4 C1857682?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Parikh S, Goldstein A, Karaa A, et al. Patient care standards for primary mitochondrial disease: a consensus statement from the Mitochondrial Medicine Society. Genet Med. 2017.
Suomalainen A, Battersby BJ. Mitochondrial diseases: towards mechanistic therapies. Nat Rev Drug Discov. 2018.
Houghton BC, Uittenbogaard M, Li FY, et al. Novel approaches to treating combined oxidative phosphorylation defects: a phase I/II trial of rapamycin in children with mitochondrial disease. Ann Neurol. 2021.
Gorman GS, Chinnery PF, DiMauro S, et al. Mitochondrial diseases. Nat Rev Dis Primers. 2016.
Medication Comparisons
Compare medications used to treat Combined Oxidative Phosphorylation Defect Type 4 C1857682. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy