MT-ATP6-related mitochondrial spastic paraplegia

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Overview

MT-ATP6-related mitochondrial spastic paraplegia is a very rare genetic condition that affects the nervous system, specifically the nerves that control leg movement. It is caused by changes (mutations) in the MT-ATP6 gene, which is found in mitochondrial DNA — the energy-producing structures inside every cell of your body. When this gene does not work properly, cells in the brain and spinal cord that require a lot of energy cannot function normally, leading to progressive stiffness and weakness in the legs, known as spastic paraplegia. The hallmark symptom is gradually increasing stiffness (spasticity) in the lower limbs, which makes walking difficult over time. Some patients may also experience other neurological problems such as balance difficulties, fatigue, and sometimes mild cognitive changes, depending on the severity of the mitochondrial dysfunction. Because mitochondria are present in nearly every cell, some individuals may have additional symptoms affecting other organ systems, though the legs are most prominently affected. There is currently no cure for this condition. Treatment focuses on managing symptoms and maintaining quality of life. Physical therapy, medications to reduce muscle stiffness (such as baclofen or tizanidine), and assistive devices like braces or walkers can help with mobility. Because this is a mitochondrial disorder, some doctors may also recommend supplements such as coenzyme Q10 or L-carnitine to support mitochondrial function, although strong evidence for their effectiveness in this specific condition is limited. Regular follow-up with a neurologist and a geneticist experienced in mitochondrial diseases is important.

Also known as:

Key symptoms:

Stiffness in the legs (spasticity)Difficulty walkingLeg weaknessBalance problemsIncreased muscle tone in the lower limbsFatigue and low energyExaggerated reflexes in the legsFoot deformities such as high archesBladder control problemsNumbness or tingling in the feetDifficulty with coordinationMuscle cramps in the legs

Clinical phenotype terms (17)— hover any for plain English
Lower limb painHP:0012514Supraventricular arrhythmiaHP:0005115Leg muscle stiffnessHP:0008969
Inheritance

Mitochondrial

Passed from mother to child through the energy-producing parts of the cell

Age of Onset

Variable

Can begin at different ages, from infancy through adulthood

Orphanet ↗NORD ↗

Treatments

No FDA-approved treatments are currently listed for MT-ATP6-related mitochondrial spastic paraplegia.

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No actively recruiting trials found for MT-ATP6-related mitochondrial spastic paraplegia at this time.

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No specialists are currently listed for MT-ATP6-related mitochondrial spastic paraplegia.

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 MT-ATP6-related mitochondrial spastic paraplegia.

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Community

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Caregiver Resources

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Questions for your doctor

Bring these to your next appointment

  • Q1.What is my heteroplasmy level, and how does it affect my expected disease course?,What physical therapy program would be most helpful for maintaining my mobility?,Are there any mitochondrial supplements you recommend, and what evidence supports them?,How often should I have follow-up neurological evaluations?,Are there any clinical trials or new treatments being studied for MT-ATP6 mutations?,Should my family members be tested for this mitochondrial mutation?,What should I do if my symptoms suddenly get worse, such as during an illness?

Common questions about MT-ATP6-related mitochondrial spastic paraplegia

What is MT-ATP6-related mitochondrial spastic paraplegia?

MT-ATP6-related mitochondrial spastic paraplegia is a very rare genetic condition that affects the nervous system, specifically the nerves that control leg movement. It is caused by changes (mutations) in the MT-ATP6 gene, which is found in mitochondrial DNA — the energy-producing structures inside every cell of your body. When this gene does not work properly, cells in the brain and spinal cord that require a lot of energy cannot function normally, leading to progressive stiffness and weakness in the legs, known as spastic paraplegia. The hallmark symptom is gradually increasing stiffness (s

How is MT-ATP6-related mitochondrial spastic paraplegia inherited?

MT-ATP6-related mitochondrial spastic paraplegia follows a mitochondrial inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.