About Canavan Disease
Canavan disease (also called Canavan-Van Bogaert-Bertrand disease) is a rare autosomal recessive leukodystrophy caused by mutations in the ASPA gene encoding aspartoacylase, a key enzyme in brain metabolism. This enzyme normally catalyzes hydrolysis of N-acetylaspartate (NAA) to aspartate and acetate, both critical metabolites in the central nervous system. Loss of enzymatic activity causes massive accumulation of NAA in the brain, with characteristic spongy degeneration of white matter defined by intramyelinic edema and vacuolation.
Patients present in infancy with hypotonia (decreased muscle tone) and developmental delay, typically manifesting by 3-6 months of age with failure to meet developmental milestones. Progressive spasticity develops during the second year of life affecting lower more than upper limbs. Seizures occur in most patients. Visual and hearing loss develop as disease progresses.
Most patients become vegetative (profoundly disabled with minimal awareness) by late childhood. MRI characteristically shows white matter changes with a spongy appearance. The severe infantile form presents by 6 months with rapid progression, while rare juvenile variants present later with slower progression but still lead to significant neurological disability.
Common Symptoms of Canavan Disease
Recognizing the signs of Canavan Disease early can lead to faster diagnosis and better outcomes. Symptoms may vary in severity from person to person. If you or a loved one are experiencing any of the following, consider speaking with a specialist.
- Developmental delay and hypotonia in infancy
- Loss of developmental milestones
- Spasticity developing in second year of life
- Seizures
- Visual and hearing loss
- Progressive quadriplegia
Who Canavan Disease Affects
Canavan disease typically manifests by age 3-6 months with developmental delay and hypotonia. The condition affects males and females equally. It shows notably higher prevalence in the Ashkenazi Jewish population (approximately 1 in 6,400 to 1 in 13,500) compared to general population (approximately 1 in 100,000), though cases occur across all ethnicities.
Autosomal recessive inheritance means both parents must carry mutations, and approximately 25% of offspring in carrier couples will be affected.
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Help Paying for Canavan Disease Treatment
Charity funds and drugmaker programs for Canavan Disease, checked at the source. Pick your insurance to see what fits.
- From a charity · United Leukodystrophy FoundationHultman Memorial Fund fundOpen
Pays for: Expenses directly related to the affected family member, based on demonstrated hardship (per 12 months), up to $500 per year.
The foundation says: “Applications are reviewed on a rolling basis as funding is available.”
Side Effect Explorer
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Genetic Testing
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Trusted Canavan Disease Resources
Reputable organizations and medical references for learning more about Canavan Disease, including disease registries, foundation resources, and clinical guidelines.