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Familial Apolipoprotein C Ii Deficiency C1720779

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

A rare genetic disorder affecting fat metabolism, causing very high triglyceride levels in the blood. It can run in families and affect multiple relatives. Treatment involves strict dietary fat restriction and sometimes medication.

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
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Recurrent abdominal pain

Fatigue or weight changes

(metabolic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Xanthomas

(metabolic)

Hepatomegaly

(metabolic)

Peripheral edema

(metabolic)

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

Exercise prescription and weight management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Very Low-Fat Diet

Strict limitation of dietary fat intake, typically to less than 10-15% of total calories, to reduce triglyceride levels. Involves elimination of simple carbohydrates and saturated fats while ensuring adequate nutrition.

dietary
3

Fibrate Therapy

Prescription fibrate medications that reduce triglyceride production in the liver and enhance lipoprotein lipase activity. First-line pharmacological treatment when dietary changes alone are insufficient.

medication

Additional treatment options

Omega-3 Fatty Acid Supplementation

High-dose fish oil or prescription omega-3 fatty acid preparations to lower triglyceride levels through multiple mechanisms including reduced hepatic VLDL production.

dietary

Regular Aerobic Exercise

Consistent moderate-intensity exercise program such as walking, cycling, or swimming to improve insulin sensitivity and enhance triglyceride clearance from the bloodstream.

lifestyle

Lipid Profile Monitoring

Regular blood testing to track triglyceride levels and adjust treatment intensity. Includes monitoring for complications such as pancreatitis which occurs at very high triglyceride levels.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Familial Apolipoprotein C Ii Deficiency C1720779?

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

general

Sources and references

Authoritative medical sources used to create this content.

1

Hegele RA, Ban MR. Inherited Lipodystrophies and Dyslipidemias in Clinical Practice. Curr Opin Lipidol. 2022.

review2022
2

National Lipid Association. Management of Hypertriglyceridemia: Clinical Practice Guidelines. J Clin Lipidol. 2021.

guideline2021
3

Young SG, Zechner R. Biochemistry and Pathophysiology of Apolipoprotein C-II Deficiency. Arterioscler Thromb Vasc Biol. 2020.

review2020
4

Gaudet D, Aigner F, Tremblay K. Efficacy of Novel Therapies in Severe Hypertriglyceridemia Associated with ApoC-II Deficiency. J Lipid Res. 2023.

clinical_trial2023

Medication Comparisons

Compare medications used to treat Familial Apolipoprotein C Ii Deficiency C1720779. 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