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Living with Multiple endocrine neoplasia

A group of inherited conditions with tumors in two or more hormone-producing glands.

Understanding Multiple endocrine neoplasia

Multiple endocrine neoplasia is a group of inherited conditions that affect the hormone-producing glands of the endocrine system.

It typically involves tumors in at least two endocrine glands, and tumors can also form in other organs. They can be noncancerous or cancerous. The major forms are types 1, 2, and 4, which differ by the genes involved, hormones made, and signs. Type 1 often involves the parathyroid, pituitary, and pancreas. Type 2 most often involves medullary thyroid cancer and sometimes an adrenal tumor called pheochromocytoma. It can begin at any time in life.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet.

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 hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Cancer specialists (oncologists); 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
Which type of multiple endocrine neoplasia is this, and can genetic testing tell?
What screening schedule do you recommend?
Should my relatives be tested?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant

Changes in genes (also called variants) cause this condition, and the genes differ by type. It is autosomal dominant, which means a changed copy of the gene from one parent can be enough to cause it.

GeneticEndocrine

Also known as: endocrine adenomatosis; familial polyendocrine adenomatosis; mea - multiple endocrine adenomatosis; men; men - multiple endocrine neoplasia; men syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Multiple endocrine neoplasiaGARD ID 21044 · 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 Multiple endocrine neoplasia.

Explore the Multiple endocrine neoplasia blog

Explore research for Multiple endocrine neoplasia

Explore actively recruiting Multiple endocrine neoplasia studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Multiple endocrine neoplasia with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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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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