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Living with Spastic ataxia 1

A rare inherited nervous system condition with stiff legs, unsteady movement and speech and swallowing difficulty.

Understanding Spastic ataxia 1

Spastic ataxia 1 is a rare genetic condition that causes stiff leg muscles (spasticity) and poor coordination (ataxia).

The ataxia can show up as head jerks, eye movement differences, slurred speech, trouble swallowing and an unsteady walk. Symptoms can start anywhere from childhood to adulthood.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Stiff leg muscles (spasticity)
  • Unsteady walk
  • Jerky head movements
  • Slurred speech (dysarthria)
  • Trouble swallowing (dysphagia)
  • Slow eye movements

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists and genetic specialists.

  3. Consider genetic testing

    Changes in VAMP1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    National Ataxia Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: National Ataxia Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Ataxia Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing of the VAMP1 gene confirm this diagnosis?
What therapies can help with walking and speech?
Should a swallowing specialist evaluate me?

Quick facts

Symptoms usually startfrom Childhood to Adulthood
InheritanceAutosomal Dominant
GenesVAMP1

GARD lists changes in the VAMP1 gene. It is inherited in an autosomal dominant pattern, meaning one changed copy of the gene is enough.

GeneticNeurological

Also known as: ataxia, spastic, 1, autosomal dominant; autosomal dominant spastic ataxia caused by mutation in vamp1; autosomal dominant spastic ataxia type 1; spastic ataxia type 1; spax1; spax1 - autosomal dominant spastic ataxia type 1

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Spastic ataxia 1GARD ID 17206 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Spastic ataxia 1.

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Explore research for Spastic ataxia 1

Explore actively recruiting Spastic ataxia 1 studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Spastic ataxia 1 with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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