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Living with Familial atypical multiple mole melanoma syndrome

An inherited condition with many moles and a higher chance of melanoma, and sometimes pancreatic cancer.

Understanding Familial atypical multiple mole melanoma syndrome

Familial atypical multiple mole melanoma (FAMMM) syndrome is an inherited skin condition with many moles and a family history of melanoma.

People often have more than 50 moles. Some also have a higher risk of pancreatic cancer and other cancers. It can be noticed at any time in life.

Signs & symptoms

GARD describes this feature in its summary:

  • Many moles (often more than 50)
  • A family history of melanoma

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, genetic specialists and skin, hair, and nail specialists.

  3. Consider genetic testing

    Changes in CDKN2A are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    FORCE: Facing Our Risk of Cancer Empowered, Melanoma Research Foundation and The Skin Cancer Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Expert lists: FORCE: Facing Our Risk of Cancer Empowered, Melanoma Research Foundation, The Skin Cancer Foundation
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 FORCE: Facing Our Risk of Cancer Empowered and other patient organizations
  • 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 skin be checked by a skin doctor?
Should I be screened for pancreatic cancer?
Should my family members have genetic testing?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant
GenesCDKN2A

Changes in the CDKN2A gene cause this condition. It is autosomal dominant, which means a change in one copy of the gene can cause it.

GeneticSkin

Also known as: b-k mole syndrome; familial atypical mole melanoma syndrome; familial atypical mole syndrome; familial atypical multiple mole melanoma-pancreatic carcinoma syndrome; familial clark nevus syndrome; familial dysplastic nevus syndrome

Patient organizations

Source: NIH GARD · Familial atypical multiple mole melanoma syndromeGARD ID 9281 · 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 atypical multiple mole melanoma syndrome.

Explore the Familial atypical multiple mole melanoma syndrome blog

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