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Living with Familial bicuspid aortic valve

A heart condition in which the aortic valve has two flaps instead of three, running in families.

Understanding Familial bicuspid aortic valve

Familial bicuspid aortic valve is a rare genetic heart difference in which the aortic valve has two flaps instead of three, in at least two close relatives.

It is present from birth. It often causes no symptoms, but can lead to valve problems over time, such as leaking or narrowing. It can also come with widening of the aorta (the large blood vessel from the heart).

Signs & symptoms

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

  • Aortic valve with two flaps (bicuspid)
  • Heart murmur
  • Leaking aortic valve (aortic regurgitation)
  • Narrowed aortic valve (aortic stenosis)
  • Widening of the aorta (aneurysm)
  • High blood pressure

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 heart and blood vessel 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

    Adult Congenital Heart Association may keep lists of experts for this condition.

Care & treatment

Care team
Genetic specialists (geneticists); Heart and blood vessel specialists (cardiologists)
Expert care
Expert lists: Adult Congenital Heart 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 Adult Congenital Heart 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
How often should my heart and aorta be checked with imaging?
Should my family members have a heart check?
Are there activities I should limit?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

Changes in genes cause this condition. It is autosomal dominant, which means a change in one copy of the gene can cause it. GARD does not name the gene.

Genetic

Also known as: familial bav; familial bav (bicuspid aortic valve)

Patient organizations

Source: NIH GARD · Familial bicuspid aortic valveGARD ID 17670 · 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 bicuspid aortic valve.

Explore the Familial bicuspid aortic valve blog

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Explore actively recruiting Familial bicuspid aortic valve studies with HealthSpark.

HealthSpark

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  • Recruiting studies from ClinicalTrials.gov
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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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