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Living with Aase-Smith syndrome

A rare genetic condition with fluid on the brain, cleft palate, and stiff joints.

Understanding Aase-Smith syndrome

Aase-Smith syndrome is a rare genetic disorder with fluid buildup in the brain, cleft palate, and stiff joints.

The fluid buildup (hydrocephalus) is due to a brain difference called Dandy-Walker malformation. Joints can be stiff or frozen in place (contractures). Other features may include thin fingers, ear differences, heart defects, and clubfoot. GARD lists onset as during pregnancy and as a newborn.

Signs & symptoms

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

  • Dandy-Walker brain malformation
  • Cleft palate
  • Multiple stiff joints (contractures)
  • Clubfoot
  • Scoliosis
  • Ear differences

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 Dandy-Walker Alliance, Inc. 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
Does my child need monitoring for fluid buildup in the brain?
What therapies can help with joint stiffness?
Should we have genetic counseling about inheritance?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant

The cause is not known, but it is likely genetic. Reports of affected family members suggest likely autosomal dominant inheritance.

GeneticNeurological

Also known as: aase smith i syndrome; aase smith type 1 syndrome; aase-smith i syndrome; aase-smith syndrome i; aase-smith syndrome type 1; hydrocephalus with cleft palate and joint contracture syndrome

Patient organizations

Source: NIH GARD · Aase-Smith syndromeGARD ID 5642 · 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 Aase-Smith syndrome.

Explore the Aase-Smith syndrome blog

Explore research for Aase-Smith syndrome

Explore actively recruiting Aase-Smith syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Aase-Smith 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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