Overview
Pontocerebellar hypoplasia type 7 (PCH7) is an extremely rare genetic brain disorder that affects the development of the brain, particularly the cerebellum (the part of the brain that controls balance and coordination) and the pons (a part of the brainstem that connects the brain to the spinal cord). Both of these structures are abnormally small (hypoplastic) from birth. PCH7 is also associated with disorders of sex development, meaning that affected individuals may have differences between their genetic sex and the appearance of their genitalia. Babies with PCH7 typically show signs from birth or very early infancy. These signs include severe developmental delay, difficulty feeding, weak muscle tone (hypotonia), seizures, and very limited or absent motor development. Many affected children do not achieve milestones such as sitting, standing, or speaking. The condition also causes progressive shrinkage (atrophy) of the brain over time, leading to worsening neurological problems. There is currently no cure for PCH7. Treatment is supportive and focuses on managing symptoms such as seizures, feeding difficulties, and respiratory problems. A team of specialists is typically needed to provide the best possible care. The prognosis is unfortunately very poor, with many affected children having a significantly shortened lifespan.
Key symptoms:
Very small cerebellum and brainstem visible on brain imagingSevere developmental delayWeak or floppy muscle tone (hypotonia)SeizuresDifficulty feeding or swallowingLittle or no ability to sit, stand, or walkLittle or no speech developmentDifferences in genital development (disorders of sex development)Progressive brain shrinkage over timeAbnormal eye movementsBreathing difficultiesSmall head size (microcephaly)Irritability or excessive cryingPoor growth and failure to thrive
Clinical phenotype terms (37)— hover any for plain English
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for Pontocerebellar hypoplasia type 7.
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Specialists
View all specialists →No specialists are currently listed for Pontocerebellar hypoplasia type 7.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Pontocerebellar hypoplasia type 7.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
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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.What specific genetic mutation was found, and what does it mean for our child's outlook?,What is the best way to manage my child's seizures, and what should I do if a seizure lasts too long?,Should my child have a feeding tube, and when is the right time to consider one?,Are there any clinical trials or research studies we could participate in?,What therapies (physical, occupational, speech) would benefit my child the most?,Should other family members be tested to see if they are carriers?,Can you refer us to a palliative care team to help with comfort and quality of life planning?
Common questions about Pontocerebellar hypoplasia type 7
What is Pontocerebellar hypoplasia type 7?
Pontocerebellar hypoplasia type 7 (PCH7) is an extremely rare genetic brain disorder that affects the development of the brain, particularly the cerebellum (the part of the brain that controls balance and coordination) and the pons (a part of the brainstem that connects the brain to the spinal cord). Both of these structures are abnormally small (hypoplastic) from birth. PCH7 is also associated with disorders of sex development, meaning that affected individuals may have differences between their genetic sex and the appearance of their genitalia. Babies with PCH7 typically show signs from bir
How is Pontocerebellar hypoplasia type 7 inherited?
Pontocerebellar hypoplasia type 7 follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Pontocerebellar hypoplasia type 7 typically begin?
Typical onset of Pontocerebellar hypoplasia type 7 is neonatal. Age of onset can vary across affected individuals.