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Living with Weaver syndrome

A genetic condition with tall stature, usually mild learning difficulty, and distinctive facial features, starting before or at birth.

Understanding Weaver syndrome

Weaver syndrome is a genetic condition with tall stature, a variable degree of intellectual disability, and distinctive facial features.

Some people also have a large head. Facial features can include a broad forehead, widely spaced eyes, large low-set ears, a dimpled chin, and a small lower jaw. Stiff joints, a curved spine, loose skin, and a belly-button hernia can occur. GARD says there may be a slightly raised chance of a childhood tumor called neuroblastoma, but exact risk is hard to know.

Signs & symptoms

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

  • Tall stature and large head
  • Developmental delay and intellectual disability
  • Broad forehead
  • Hoarse, low-pitched voice
  • Feeding difficulties in infancy
  • Stiff or increased muscle tone

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 bone and joint specialists, brain and nervous system specialists, genetic specialists and hormone specialists.

  3. Consider genetic testing

    Changes in EZH2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Brain and nervous system specialists (neurologists); 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 The MAGIC Foundation
  • 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
Could EZH2 genetic testing help our family?
What screening is recommended, if any, for tumors?
What therapies can support development?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant
GenesEZH2

Weaver syndrome is caused by changes in the EZH2 gene. A child can get it from one parent with the changed gene (autosomal dominant).

GeneticNeurologicalEndocrine

Also known as: camptodactyly-overgrowth-unusual facies syndrome; overgrowth syndrome with accelerated skeletal maturation, unusual facies, and camptodactyly; weaver smith syndrome; weaver-like syndrome; wvs

Patient organizations

Source: NIH GARD · Weaver syndromeGARD ID 7878 · 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 Weaver syndrome.

Explore the Weaver syndrome blog

Explore research for Weaver syndrome

Explore actively recruiting Weaver syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Weaver syndrome 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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