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Living with Cerebellar dysfunction with variable cognitive and behavioral abnormalities

A rare inherited condition starting in infancy that affects coordination, development, and behavior.

Understanding Cerebellar dysfunction with variable cognitive and behavioral abnormalities

Cerebellar dysfunction with variable cognitive and behavioral abnormalities is a rare form of inherited ataxia (type 1) with poor coordination that starts in infancy.

Some babies have low muscle tone and mild developmental delay. Later in life, intellectual disability may follow. Less common features include slurred speech, trouble judging movements, and facial differences such as a long face and pointed chin.

Signs & symptoms

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

  • Poor coordination and balance (ataxia)
  • Autistic behavior
  • Aggressive behavior
  • Differences in social behavior
  • Cross-eyed (strabismus)
  • 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 and genetic specialists.

  3. Consider genetic testing

    Changes in CAMTA1 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 CAMTA1 genetic testing confirm the diagnosis?
What therapies can help with coordination and learning?
How can behavior be supported?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesCAMTA1

Changes in the CAMTA1 gene cause this condition. It is inherited in an autosomal dominant way, so one changed copy of the gene can cause it.

GeneticNeurological

Also known as: camta1-related disorder; cecba; cerebellar ataxia, nonprogressive, with intellectual disability; non-progressive cerebellar ataxia with intellectual disability; nonprogressive cerebellar ataxia with intellectual disability; nonprogressive cerebellar atxia with intellectual disability

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Cerebellar dysfunction with variable cognitive and behavioral abnormalitiesGARD ID 17429 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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