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Living with Familial chylomicronemia syndrome

An inherited condition in which fat builds up in the blood, causing belly pain and pancreas inflammation.

Understanding Familial chylomicronemia syndrome

Familial chylomicronemia syndrome is an inherited condition that disrupts the normal breakdown of fats, so a large amount of fat builds up in the blood.

It causes pancreas inflammation (pancreatitis), belly pain, an enlarged liver and spleen, and small yellow skin bumps called eruptive xanthomas. It can appear at a variety of ages.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Pancreas inflammation (pancreatitis)
  • Repeated pancreatitis
  • Belly pain
  • Enlarged liver and spleen
  • Small yellow skin bumps (eruptive xanthomas)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists and hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Foundation of the National Lipid Association may keep lists of experts for this condition.

Care & treatment

Care team
Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Foundation of the National Lipid Association
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Foundation of the National Lipid Association
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What diet changes can lower the fat in my blood?
How can I lower my chance of pancreatitis?
Can genetic testing for the LPL gene confirm this diagnosis?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive

Changes in the LPL gene cause this condition. It is autosomal recessive, which means a child inherits a changed copy of the gene from each parent.

GeneticEndocrineInherited Metabolic

Patient organizations

Source: NIH GARD · Familial chylomicronemia syndromeGARD ID 6414 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Familial chylomicronemia syndrome.

Explore the Familial chylomicronemia syndrome blog

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