Gingival fibromatosis-facial dysmorphism syndrome

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ORPHA:2025OMIM:228560Q87.0
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Overview

Gingival fibromatosis-facial dysmorphism syndrome (also known as Ramon syndrome or gingival fibromatosis with distinctive facies) is an extremely rare genetic disorder characterized by the combination of gingival fibromatosis (progressive overgrowth of the gum tissue) and distinctive facial features. The condition typically becomes apparent in infancy or early childhood as the gingival enlargement develops, which can interfere with tooth eruption, dental alignment, and oral hygiene. The facial dysmorphism associated with this syndrome may include features such as a bulbous soft nose, thick lips, hypertelorism (widely spaced eyes), and a broad nasal bridge. Additional features that have been reported in some patients include hypertrichosis (excessive hair growth), intellectual disability, epilepsy, hepatosplenomegaly, and cherubism (bilateral swelling of the jaws due to fibrous tissue replacement of bone). The skeletal system may also be affected in some cases. Treatment is primarily symptomatic and supportive. Gingival overgrowth is typically managed through surgical reduction (gingivectomy), although recurrence is common and repeated procedures may be necessary. Dental care and monitoring are essential components of management. Seizures, if present, are managed with standard antiepileptic medications. A multidisciplinary approach involving dentists, oral surgeons, geneticists, and other specialists is recommended for optimal care. There is currently no cure for this condition.

Clinical phenotype terms— hover any for plain English:

Gingival fibromatosisHP:0000169Exaggerated cupid's bowHP:0002263
Inheritance

Autosomal recessive

Passed on when both parents carry the same gene change; often skips generations

Age of Onset

Infantile

Begins in infancy, roughly 1 month to 2 years old

Orphanet ↗OMIM ↗NORD ↗

Treatments

No FDA-approved treatments are currently listed for Gingival fibromatosis-facial dysmorphism syndrome.

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No actively recruiting trials found for Gingival fibromatosis-facial dysmorphism syndrome at this time.

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No specialists are currently listed for Gingival fibromatosis-facial dysmorphism syndrome.

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Treatment Centers

8 centers
🏥 NORD

Baylor College of Medicine Rare Disease Center

Baylor College of Medicine

📍 Houston, TX

🏥 NORD

Stanford Medicine Rare Disease Center

Stanford Medicine

📍 Stanford, CA

🔬 UDN

NIH Clinical Center Undiagnosed Diseases Program

National Institutes of Health

📍 Bethesda, MD

🔬 UDN

UCLA UDN Clinical Site

UCLA Health

📍 Los Angeles, CA

🔬 UDN

Baylor College of Medicine UDN Clinical Site

Baylor College of Medicine

📍 Houston, TX

🔬 UDN

Harvard/MGH UDN Clinical Site

Massachusetts General Hospital

📍 Boston, MA

🏥 NORD

Mayo Clinic Center for Individualized Medicine

Mayo Clinic

📍 Rochester, MN

👤 Mayo Clinic Center for Individualized Medicine

🏥 NORD

UCLA Rare Disease Day Program

UCLA Health

📍 Los Angeles, CA

Travel Grants

No travel grants are currently matched to Gingival fibromatosis-facial dysmorphism syndrome.

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Community

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Caregiver Resources

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Common questions about Gingival fibromatosis-facial dysmorphism syndrome

What is Gingival fibromatosis-facial dysmorphism syndrome?

Gingival fibromatosis-facial dysmorphism syndrome (also known as Ramon syndrome or gingival fibromatosis with distinctive facies) is an extremely rare genetic disorder characterized by the combination of gingival fibromatosis (progressive overgrowth of the gum tissue) and distinctive facial features. The condition typically becomes apparent in infancy or early childhood as the gingival enlargement develops, which can interfere with tooth eruption, dental alignment, and oral hygiene. The facial dysmorphism associated with this syndrome may include features such as a bulbous soft nose, thick li

How is Gingival fibromatosis-facial dysmorphism syndrome inherited?

Gingival fibromatosis-facial dysmorphism syndrome follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.

At what age does Gingival fibromatosis-facial dysmorphism syndrome typically begin?

Typical onset of Gingival fibromatosis-facial dysmorphism syndrome is infantile. Age of onset can vary across affected individuals.