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Living with Familial type 3 hyperlipoproteinemia

An inherited condition (dysbetalipoproteinemia) in which the body can't break down certain fats normally, so they build up.

Understanding Familial type 3 hyperlipoproteinemia

Familial type 3 hyperlipoproteinemia, also called dysbetalipoproteinemia, is an inherited condition that disrupts normal breakdown of fats in the body.

Some people never have symptoms. Symptoms usually appear only when a second genetic or environmental factor raises fat levels. They may include yellowish fatty bumps on the skin (xanthomas), inflammation of the pancreas (pancreatitis), and fat buildup in blood vessels (atherosclerosis). It may lead to cardiovascular disease.

Signs & symptoms

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

  • Yellowish fatty bumps on the skin (xanthomas)
  • Fatty deposits around the eyes (xanthelasma)
  • Fatty bumps in the palm creases
  • Fatty lumps on tendons
  • Enlarged liver
  • Obesity and diabetes

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. Consider genetic testing

    Changes in APOE are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
Should I have my APOE gene tested?
What lifestyle or other factors may raise my lipid levels?
How often should my cholesterol and heart health be checked?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Dominant
GenesAPOE

Changes in the APOE gene cause it. Most people with symptoms have two changes in the APOE gene, inherited in an autosomal recessive way, and other factors also play a role.

GeneticEndocrineInherited Metabolic

Also known as: apolipoprotein e deficiency; apolipoprotein e, deficiency or defect of; broad beta disease; broad-beta disease; broad-betalipoproteinemia; carbohydrate induced hyperlipemia

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Familial type 3 hyperlipoproteinemiaGARD ID 6703 · 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 type 3 hyperlipoproteinemia.

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