Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome

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ORPHA:496756OMIM:617207G31.8
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Overview

Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome is a very rare inherited brain and nervous system disorder that begins in infancy or early childhood. It is sometimes referred to by the abbreviation EOPSCA-DSMA. This condition affects multiple parts of the nervous system at the same time, which leads to a combination of symptoms that can be challenging to manage. The disease causes the brain to progressively lose function over time (encephalopathy), meaning children may experience intellectual disability and developmental delays. It also causes spastic ataxia, which means the muscles become stiff and movement becomes uncoordinated and unsteady. In addition, the condition affects the nerves that control the muscles in the hands and feet (distal spinal muscular atrophy), leading to weakness and wasting of the muscles furthest from the body's center. Currently, there is no cure for this condition. Treatment focuses on managing symptoms, supporting development, and improving quality of life. This includes physical therapy, occupational therapy, speech therapy, and medications to help with muscle stiffness or seizures if they occur. Because this disease is so rare, care is typically coordinated by a team of specialists with experience in rare neurological conditions.

Also known as:

Key symptoms:

Progressive intellectual disability and cognitive declineUnsteady, poorly coordinated movements (ataxia)Stiff, tight muscles (spasticity)Muscle weakness in the hands and feetMuscle wasting (shrinking) in the lower arms and legsDelayed developmental milestones such as sitting, standing, or walkingDifficulty speaking or communicatingSeizures in some individualsAbnormal reflexesDifficulty with fine motor tasks like writing or buttoning clothes

Clinical phenotype terms (24)— hover any for plain English
Progressive encephalopathyHP:0002448Spastic ataxiaHP:0002497Spinal muscular atrophyHP:0007269Difficulty standingHP:0003698AnarthriaHP:0002425Progressive spastic paraparesisHP:0007199
Inheritance

Autosomal recessive

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

Age of Onset

Infantile

Begins in infancy, roughly 1 month to 2 years old

Orphanet ↗OMIM ↗NORD ↗

Treatments

No FDA-approved treatments are currently listed for Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome.

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No actively recruiting trials found for Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome at this time.

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No specialists are currently listed for Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy 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 progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome.

Search all travel grants →NORD Financial Assistance ↗

Community

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Caregiver Resources

NORD Caregiver Resources

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Social Security Disability

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Questions for your doctor

Bring these to your next appointment

  • Q1.What specific changes were found in the TBCK gene, and what do they mean for my child's prognosis?,What therapies should we start right away, and how often should my child receive them?,Are there any clinical trials or research studies that my child might be eligible for?,What signs should prompt me to seek emergency care?,How will we monitor my child's progression over time, and what tests will be needed?,Are other family members at risk, and should they be tested?,What support services and educational resources are available for my child and our family?

Common questions about Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome

What is Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome?

Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome is a very rare inherited brain and nervous system disorder that begins in infancy or early childhood. It is sometimes referred to by the abbreviation EOPSCA-DSMA. This condition affects multiple parts of the nervous system at the same time, which leads to a combination of symptoms that can be challenging to manage. The disease causes the brain to progressively lose function over time (encephalopathy), meaning children may experience intellectual disability and developmental delays. It also causes spa

How is Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome inherited?

Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.

At what age does Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome typically begin?

Typical onset of Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome is infantile. Age of onset can vary across affected individuals.