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Living with Heart defect - tongue hamartoma - polysyndactyly syndrome

A rare genetic syndrome with heart defects, a noncancerous growth on the tongue, and extra or joined fingers and toes.

Understanding Heart defect - tongue hamartoma - polysyndactyly syndrome

Heart defect - tongue hamartoma - polysyndactyly syndrome is a rare genetic syndrome with several differences present at birth.

It includes congenital heart defects, such as a narrowed aorta, with growths on the tongue (tongue hamartomas), extra little fingers, and joined toes. It is noticed in the newborn period.

Signs & symptoms

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

  • Heart defects, such as narrowing below the aortic valve
  • Patent ductus arteriosus (an open blood vessel in the heart)
  • Tongue hamartoma (noncancerous growth)
  • Joined fingers (webbing)
  • Undescended testes

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.

  3. Consider genetic testing

    Changes in WDPCP 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)
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
Can genetic testing confirm a change in the WDPCP gene?
Which heart treatments or surgeries may be needed?
What follow-up is needed for the tongue growth and the brain?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Recessive
GenesWDPCP

Changes in the WDPCP gene cause this condition. A child inherits a changed copy of the gene from each parent (autosomal recessive).

Genetic

Also known as: congenital heart defects, hamartomas of tongue, and polysyndactyly; heart defect-tongue hamartoma-polysyndactyly syndrome; ostravik-lindemann-solberg syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Heart defect - tongue hamartoma - polysyndactyly syndromeGARD ID 4166 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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