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Living with Familial adenomatous polyposis 2

An inherited condition with several polyps in the colon and a higher chance of colorectal cancer.

Understanding Familial adenomatous polyposis 2

Familial adenomatous polyposis 2 (MUTYH-related attenuated FAP) is an inherited condition with multiple colon polyps and a higher risk of colorectal cancer.

It is a milder form of familial adenomatous polyposis. People usually have fewer than 100 polyps, instead of hundreds or thousands. They may also have a higher risk of polyps in the upper digestive tract. It usually appears in adulthood.

Signs & symptoms

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

  • Several polyps in the colon (adenomatous polyposis)
  • Polyps in the rectum
  • Colon cancer
  • Possible polyps in the upper digestive tract

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, digestive system specialists and genetic specialists.

  3. Consider genetic testing

    Changes in MUTYH 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

    Fight Colorectal Cancer may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Digestive system specialists (gastroenterologists); Genetic specialists (geneticists)
Expert care
Expert lists: Fight Colorectal Cancer
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 Fight Colorectal Cancer 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 I have a colonoscopy?
Should my brothers, sisters, or children have genetic testing?
Do I need checks of the upper digestive tract too?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Recessive
GenesMUTYH

Changes in the MUTYH gene cause this condition. It is autosomal recessive, which means a child inherits a changed copy of the gene from each parent.

GeneticGastrointestinal

Also known as: adenomas, multiple colorectal; adenomas, multiple colorectal, autosomal recessive; colorectal adenomatous polyposis, autosomal recessive; familial adenomatous polyposis, 2; familial adenomatous polyposis, type 2; fap type 2

Patient organizations

Source: NIH GARD · Familial adenomatous polyposis 2GARD ID 10805 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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