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Living with Abortive cerebellar ataxia

A condition, also called Behr syndrome, with early optic nerve damage, poor coordination, stiff muscles, and learning challenges.

Understanding Abortive cerebellar ataxia

Abortive cerebellar ataxia, also called Behr syndrome, is a condition with early-onset optic atrophy and nervous system features.

People have optic atrophy, which is damage to the nerve that carries vision. Neurological features include poor balance and coordination (ataxia), muscle stiffness (spasticity), and intellectual disability. Other signs vary from person to person.

Signs & symptoms

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

  • Optic atrophy and visual impairment
  • Poor balance and coordination (ataxia)
  • Shrinking of the cerebellum
  • Nerve damage in hands and feet (neuropathy)
  • Trouble swallowing
  • Chronic constipation

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, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in OPA1 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

    United Mitochondrial Disease Foundation, MitoAction and The Foundation for Peripheral Neuropathy may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Expert lists: United Mitochondrial Disease Foundation, MitoAction, The Foundation for Peripheral Neuropathy
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 United Mitochondrial Disease Foundation and other patient organizations
  • 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
How should my vision be followed by an eye specialist?
What therapies help with coordination and swallowing?
Should family members have OPA1 genetic testing?

Quick facts

InheritanceAutosomal Recessive, Mitochondrial
GenesOPA1

Changes in the OPA1 gene cause this condition. GARD lists autosomal recessive and mitochondrial inheritance, so a child inherits a changed copy of the gene from each parent.

GeneticNeurologicalMitochondrial

Also known as: behr complicated familial optic atrophy; behr syndrome; behrs; opa1 gene related behr syndrome; optic atrophy, infantile hereditary, with neurologic abnormalities

Patient organizations

Source: NIH GARD · Abortive cerebellar ataxiaGARD ID 849 · 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 Abortive cerebellar ataxia.

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