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Living with BAP1-related tumor predisposition syndrome

An inherited condition that raises the risk of several types of tumors in the skin, eyes, kidneys, and the lining of the chest and belly.

Understanding BAP1-related tumor predisposition syndrome

BAP1-related tumor predisposition syndrome is an inherited condition that raises the risk of several kinds of cancerous and non-cancerous tumors.

Tumors are most often in the skin, eyes, kidneys, and the mesothelium, the tissue lining the chest, belly, and organs. Family members can have different tumor types. Some people have many skin growths called atypical Spitz tumors. An eye cancer called uveal melanoma is the most common cancer in this syndrome. Onset is listed as adulthood.

Signs & symptoms

GARD doesn't list common symptoms. It lists these as less common:

  • Skin growths (atypical Spitz tumors, from summary)
  • Skin melanoma
  • Eye melanoma (uveal melanoma)
  • Cancer of the lining of the belly or chest (mesothelioma)
  • Kidney cancer (clear cell renal cell carcinoma, from summary)
  • Meningioma (a tumor of the brain's covering)

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 cancer specialists and genetic specialists.

  3. Consider genetic testing

    Changes in BAP1 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
Cancer specialists (oncologists); 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 for the BAP1 gene confirm the diagnosis?
What screening is recommended for my skin, eyes, and kidneys?
Should my relatives have genetic counseling?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant
GenesBAP1

It is caused by changes in the BAP1 gene. It is autosomal dominant, so a change in one copy of the gene can cause it.

Genetic

Also known as: bap1 tumor predisposition syndrome; common syndrome; tpds1; tumor predisposition syndrome 1; tumor susceptibility linked to germline bap1 mutations; tumour susceptibility linked to germline bap1 mutations

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · BAP1-related tumor predisposition syndromeGARD ID 13219 · 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 BAP1-related tumor predisposition syndrome.

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