Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome

Last reviewed

🖨 Print for my doctorAdvocacy Hub →
ORPHA:401959Q04.3
Who is this for?
Show terms as
8Treatment centers

Where are you in your journey?

UniteRare data is sourced from FDA.gov, ClinicalTrials.gov, Orphanet, OMIM, and NORD.
Report missing data

Overview

Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome is an extremely rare brain malformation condition. In this disorder, two important parts of the brain do not develop properly. The corpus callosum, which is the thick band of nerve fibers connecting the left and right halves of the brain, is only partially formed (partial agenesis). At the same time, the cerebellar vermis — the central part of the cerebellum at the back of the brain that helps coordinate movement and balance — is underdeveloped (hypoplastic). Additionally, fluid-filled cysts form in the posterior fossa, which is the space at the back of the skull that houses the cerebellum and brainstem. Because these brain structures play critical roles in movement, coordination, learning, and communication, affected individuals often experience developmental delays, intellectual disability, problems with balance and coordination, and sometimes seizures. The severity of symptoms can vary widely depending on how much of the brain is affected. Some children may have mild learning difficulties, while others may have more significant challenges with motor skills and cognitive development. There is currently no cure for this condition. Treatment focuses on managing symptoms and supporting development through therapies such as physical therapy, occupational therapy, and speech therapy. Seizures, if present, are managed with anti-seizure medications. Early intervention programs can help children reach their fullest potential. A team of specialists typically works together to provide comprehensive care.

Key symptoms:

Delayed developmental milestonesIntellectual disabilityProblems with balance and coordinationDifficulty walking or unsteady gaitSeizures or epilepsyLow muscle tone (floppiness)Speech and language delaysDifficulty with fine motor skills like grasping objectsEnlarged head size in some casesVision problemsDifficulty swallowing or feeding problems in infancyBehavioral challengesLearning difficulties

Inheritance

Variable

Can be inherited in different ways depending on the underlying gene

Age of Onset

Neonatal

Begins at or shortly after birth (first 4 weeks)

Orphanet ↗NORD ↗

Treatments

No FDA-approved treatments are currently listed for Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome.

View clinical trials →

No actively recruiting trials found for Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome at this time.

New trials open frequently. Follow this disease to get notified.

Search ClinicalTrials.gov ↗Join the Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome community →

No specialists are currently listed for Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome.

View NORD Rare Disease Centers ↗Undiagnosed Disease Network ↗

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 Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome.

Search all travel grants →NORD Financial Assistance ↗

Community

Open Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndromeForum →

No community posts yet. Be the first to share your experience with Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome.

Start the conversation →

Latest news about Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome

No recent news articles for Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome.

Follow this condition to be notified when news becomes available.

Caregiver Resources

NORD Caregiver Resources

Support, advocacy, and financial assistance for caregivers of rare disease patients.

Mental Health Support

Rare disease caregiving can be isolating. Connect with counseling and peer support.

Family & Caregiver Grants

Financial assistance programs specifically for caregivers of rare disease patients.

Social Security Disability

Learn how rare disease patients may qualify for SSDI/SSI benefits.

Questions for your doctor

Bring these to your next appointment

  • Q1.How severe are the brain malformations in my child's case, and what does that mean for their development?,Is there a risk of hydrocephalus developing, and what signs should I watch for?,What genetic testing should be done, and could this condition affect future pregnancies?,What therapies should we start right away, and how often should they occur?,Are there any clinical trials or research studies that my child might be eligible for?,What is the long-term outlook for my child in terms of learning, mobility, and independence?,How often should we schedule follow-up brain imaging and specialist visits?

Common questions about Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome

What is Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome?

Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome is an extremely rare brain malformation condition. In this disorder, two important parts of the brain do not develop properly. The corpus callosum, which is the thick band of nerve fibers connecting the left and right halves of the brain, is only partially formed (partial agenesis). At the same time, the cerebellar vermis — the central part of the cerebellum at the back of the brain that helps coordinate movement and balance — is underdeveloped (hypoplastic). Additionally, fluid-filled cysts form

At what age does Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome typically begin?

Typical onset of Partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome is neonatal. Age of onset can vary across affected individuals.