Skip to content
knowrare
HealthSignal
Your condition community

Living with Fibromatosis, gingival, 1

A rare condition in which the gums slowly grow larger, often running in families.

Understanding Fibromatosis, gingival, 1

Fibromatosis, gingival, 1 is a rare overgrowth condition in which the gums slowly become enlarged.

The gum enlargement is benign (noncancerous), slowly progressive, and does not bleed. It affects the gums of both the upper and lower jaw. Other types of hereditary gingival fibromatosis have been linked to other places in the genome.

Signs & symptoms

GARD doesn't list a separate symptom list. Its summary describes:

  • Slowly enlarging gums
  • Gum enlargement on upper and lower jaws
  • Non-bleeding gum overgrowth

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

  4. Connect with expert centers

    RASopathies Network may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: RASopathies Network
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 RASopathies Network
  • 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 dentist or periodontist should follow my gums?
What treatment options are there for gum overgrowth?
Is genetic testing helpful for my family?

Quick facts

GARD doesn't describe the cause for this specific type yet. Other types have been linked to other genes, including REST for type 5.

Also known as: fibromatosis, gingival, type 1; gingf1; gingival fibromatosis caused by mutation in sos1; hereditary gingival fibromatosis caused by mutation in sos1; sos1 gingival fibromatosis; sos1 hereditary gingival fibromatosis

Patient organizations

Source: NIH GARD · Fibromatosis, gingival, 1GARD ID 6509 · 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 Fibromatosis, gingival, 1.

Explore the Fibromatosis, gingival, 1 blog

Explore research for Fibromatosis, gingival, 1

Explore actively recruiting Fibromatosis, gingival, 1 studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Fibromatosis, gingival, 1 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

Powered by HealthSpark, our AI chat helper

I can help you find recruiting Fibromatosis, gingival, 1 studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

Get Signals for Fibromatosis, gingival, 1

Stay in the loop with community stories and updates from medical researchers.

HealthStoryfor Fibromatosis, gingival, 1

Create a living journal that talks back

HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your Fibromatosis, gingival, 1 experiences more deeply and prepare for better conversations with your doctors and care team.

Start your journal

Your journal is private. Sharing your story publicly is a separate choice, made with Share your story above.