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Living with Centronuclear myopathy

A muscle condition that causes weakness and wasting that slowly worsens, starting any time from birth to early adulthood.

Understanding Centronuclear myopathy

Centronuclear myopathy is a condition that causes muscle weakness (myopathy) and wasting (atrophy) in the muscles used for movement.

Severity varies, even within one family. Weakness starts anytime from birth to early adulthood and slowly worsens. It can delay motor skills such as crawling or walking, cause muscle pain with exercise, and make walking hard.

Signs & symptoms

GARD doesn't list a separate symptom list for this condition. Its summary describes these features:

  • Muscle weakness
  • Muscle wasting (atrophy)
  • Delayed crawling or walking
  • Muscle pain during exercise
  • Trouble walking

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. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Joshua Frase Foundation, RYR-1 Foundation and Muscular Dystrophy Association 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: Joshua Frase Foundation, RYR-1 Foundation, Muscular Dystrophy Association
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 Joshua Frase 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
Which type of centronuclear myopathy do I have?
What therapies can help with strength and movement?
Can genetic testing help my family?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Dominant, Autosomal Recessive, X-Linked

GARD says changes in genes cause this condition. It can be inherited in autosomal dominant, autosomal recessive, or X-linked ways. No specific gene is listed.

GeneticNeurological

Also known as: centronuclear myopathy, congenital; cnm; myopathy, centronuclear; myotubular myopathy

Patient organizations

Source: NIH GARD · Centronuclear myopathyGARD ID 101 · 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 Centronuclear myopathy.

Explore the Centronuclear myopathy blog

Explore research for Centronuclear myopathy

Explore actively recruiting Centronuclear myopathy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Centronuclear myopathy with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • 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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