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Living with Weaver-Williams syndrome

A very rare condition present from infancy with intellectual disability, small head, and facial and bone differences.

Understanding Weaver-Williams syndrome

Weaver-Williams syndrome is a very rare condition with moderate to severe intellectual disability and differences in the face and bones.

GARD also lists reduced muscle mass, a small head, prominent ears, a small mouth, cleft palate, and slow bone development. It has been described in a brother and sister. GARD says there have been no further descriptions in medical writing since 1977.

Signs & symptoms

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

  • Moderate intellectual disability
  • Small head size (microcephaly)
  • Cleft palate
  • Narrow mouth
  • Prominent ears
  • Low body weight

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 brain and nervous system specialists, ear, nose, and throat specialists and genetic specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Ear, nose, and throat specialists (otolaryngologists); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial Foundation
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 World Craniofacial Foundation 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
Is genetic counseling available for our family?
Which specialists should be on my child's team?
What help is there for the cleft palate?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

GARD says autosomal recessive inheritance has been suggested, meaning a child inherits a changed gene copy from each parent. It doesn't name a gene.

GeneticNeurological

Also known as: weaver williams syndrome

Patient organizations

Source: NIH GARD · Weaver-Williams syndromeGARD ID 5545 · 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-Williams syndrome.

Explore the Weaver-Williams syndrome blog

Explore research for Weaver-Williams syndrome

Explore actively recruiting Weaver-Williams syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Weaver-Williams 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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