Mitochondrial Complex I Deficiency Nuclear Type 15 C4748778
A genetic mitochondrial disease affecting the first complex of the cellular energy production system. It can cause problems with organs requiring lots of energy. Treatment aims to manage symptoms and support metabolism.
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
Developmental delay
(developmental)Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Muscle weakness
(musculoskeletal)Renal tubular dysfunction
(renal)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
Neurodevelopmental surveillance
Regular neurological examinations and developmental assessments to track cognitive and motor progression and identify needs for early intervention services.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Branched-chain amino acid modification
Dietary management through careful protein intake balancing to reduce metabolic stress on affected mitochondrial pathways.
Additional treatment options
Developmental therapy services
Early intervention with occupational and speech therapy to maximize neurodevelopmental potential and address motor and communication delays.
procedureNeuropsychological support
Cognitive assessment and intervention planning to address learning disabilities, attention difficulties, and behavioral concerns associated with mitochondrial encephalopathy.
psychologicalEnergy conservation techniques
Teaching patients pacing strategies and energy conservation methods to manage fatigue and prevent post-exertional malaise.
lifestyleWhen 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 15 C4748778?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy