Mitochondrial Complex I Deficiency Nuclear Type 14 C4748777
A hereditary disorder disrupting cellular energy production by damaging the first complex of the mitochondrial energy chain. Symptoms vary widely and may involve neurological and muscular systems. Management is primarily supportive.
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.
Warning signs - seek immediate care
Seizures
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Hypotonia
(neuromuscular)Lactic acidosis
(metabolic)Optic atrophy
(ophthalmic)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
Comprehensive cardiac monitoring
Regular echocardiograms and ECGs to monitor for cardiomyopathy and arrhythmias common in mitochondrial complex I deficiency. Early detection allows for timely intervention.
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Ketogenic diet consultation
Metabolic specialist-guided implementation of ketogenic diet to provide alternative energy sources through fat metabolism rather than glucose oxidation.
Additional treatment options
Coenzyme Q10 and B-vitamin supplementation
Mitochondrial support supplements to enhance electron transport chain function and reduce oxidative stress in cells with impaired complex I activity.
medicationGentle exercise program
Supervised low-intensity aerobic exercise to maintain muscle strength and endurance while preventing deconditioning in patients with exercise intolerance.
physical_therapyAcetyl-L-carnitine supplementation
Support for fatty acid metabolism and mitochondrial energy production through enhanced carnitine shuttle function across cell membranes.
complementaryWhen 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 Mitochondrial Complex I Deficiency Nuclear Type 14 C4748777?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy