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Mitochondrial Complex I Deficiency Nuclear Type 16 C4748785

Published: July 22, 2026Updated: August 20, 2026

A rare inherited condition where the first part of the mitochondrial energy machinery does not work properly. This can affect muscles, nerves, and brain function. Care focuses on symptom relief and metabolic support.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

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

Lactic acidosis

(metabolic)

Hepatic dysfunction

(hepatobiliary)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Combination drug regimen with regular assessment

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
2

Respiratory function assessment

Pulmonary function testing and sleep studies to detect respiratory muscle weakness and nocturnal hypoventilation requiring intervention.

monitoring
3

Sleep positioning optimization

Education on proper sleep positioning and potential need for inclined sleeping to improve respiratory mechanics and prevent complications.

lifestyle

Additional treatment options

Non-invasive ventilation support

CPAP or BiPAP initiation for patients demonstrating nocturnal hypoventilation or significant respiratory muscle involvement requiring respiratory support.

surgical

Respiratory muscle training

Targeted breathing exercises and inspiratory muscle training to maintain respiratory strength and improve cough efficiency.

physical_therapy

Breathing pattern retraining

Techniques to optimize breathing mechanics and reduce work of breathing through diaphragmatic breathing instruction.

complementary

When 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.

Q

What is Mitochondrial Complex I Deficiency Nuclear Type 16 C4748785?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Medication Comparisons

Compare medications used to treat Mitochondrial Complex I Deficiency Nuclear Type 16 C4748785. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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