Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome

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ORPHA:313772OMIM:614487G11.4
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Overview

Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome is an extremely rare genetic neurological condition that affects the brain and nervous system from a young age. The disease is caused by mutations in specific genes that disrupt normal nerve function. People with this condition typically develop a combination of problems including spasticity (stiffness and tightness in the muscles, especially in the legs), ataxia (difficulty with balance and coordination), myoclonic epilepsy (seizures that involve sudden, brief muscle jerks), and peripheral neuropathy (damage to the nerves outside the brain and spinal cord, causing numbness, tingling, or weakness in the hands and feet). Symptoms usually begin in childhood and tend to worsen over time. Walking becomes increasingly difficult due to the combination of stiff muscles, poor balance, and nerve damage. The seizures can vary in severity and may be difficult to control with standard medications. Because this syndrome affects multiple parts of the nervous system, patients often need care from several different specialists. Treatment is currently focused on managing individual symptoms, as there is no cure available. Anti-epileptic medications are used to control seizures, physical therapy helps maintain mobility, and other supportive treatments address specific symptoms as they arise.

Also known as:

Key symptoms:

Muscle stiffness and tightness, especially in the legsPoor balance and coordinationSeizures with sudden muscle jerks (myoclonic epilepsy)Numbness or tingling in hands and feetWeakness in the arms and legsDifficulty walkingUnsteady gaitMuscle wasting over timeDifficulty with fine motor tasks like writingSpeech difficultiesReduced reflexes in the limbsProgressive loss of mobility

Clinical phenotype terms (24)— hover any for plain English
Inheritance

Autosomal recessive

Passed on when both parents carry the same gene change; often skips generations

Age of Onset

Childhood

Begins in childhood, roughly ages 1 to 12

Orphanet ↗OMIM ↗NORD ↗

Treatments

No FDA-approved treatments are currently listed for Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome.

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No actively recruiting trials found for Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome at this time.

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No specialists are currently listed for Early-onset spastic ataxia-myoclonic epilepsy-neuropathy 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 Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome.

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Community

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Caregiver Resources

NORD Caregiver Resources

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Mental Health Support

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Family & Caregiver Grants

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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 gene mutation is causing this condition in my case, and what does that mean for disease progression?,Which anti-epileptic medications are most appropriate, and what side effects should I watch for?,How often should we have follow-up neurological evaluations and EEGs?,What physical therapy program would be most beneficial to maintain mobility?,Are there any clinical trials or research studies we could participate in?,What is the risk that other family members or future children could have this condition?,What emergency plan should we have in place for seizures?

Common questions about Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome

What is Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome?

Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome is an extremely rare genetic neurological condition that affects the brain and nervous system from a young age. The disease is caused by mutations in specific genes that disrupt normal nerve function. People with this condition typically develop a combination of problems including spasticity (stiffness and tightness in the muscles, especially in the legs), ataxia (difficulty with balance and coordination), myoclonic epilepsy (seizures that involve sudden, brief muscle jerks), and peripheral neuropathy (damage to the nerves outsi

How is Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome inherited?

Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.

At what age does Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome typically begin?

Typical onset of Early-onset spastic ataxia-myoclonic epilepsy-neuropathy syndrome is childhood. Age of onset can vary across affected individuals.