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Living with Adult-onset distal myopathy due to VCP mutation

A rare genetic muscle disease starting in middle age, with weakness in the lower legs, foot drop, and sometimes dementia.

Understanding Adult-onset distal myopathy due to VCP mutation

Adult-onset distal myopathy due to VCP mutation is a rare genetic muscle disease that affects muscles far from the center of the body.

It usually starts in middle age with weakness and wasting in the lower leg muscles, causing foot drop. The muscles near the center of the body are not weak. Dementia, Paget disease of bone, and hand weakness have been reported. A muscle biopsy shows changes called rimmed vacuoles.

Signs & symptoms

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

  • Weakness in the muscles far from the body's center
  • Foot drop
  • Frequent falls
  • Dementia
  • Weakness and wasting of the hand muscles
  • Muscle aches, cramps, and twitches

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 VCP 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

    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: 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 Muscular Dystrophy Association
  • 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
Is genetic testing for VCP available for our family?
Should I be checked for Paget disease of bone?
What can help with foot drop and walking?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant
GenesVCP

Changes in the VCP gene cause this condition. It is autosomal dominant, so a changed copy of the gene from one parent can be enough.

GeneticNeurological

Also known as: adult-onset distal myopathy due to valosin containing protein mutation; adult-onset distal myopathy due to vcp (valosin containing protein) mutation

Patient organizations

Source: NIH GARD · Adult-onset distal myopathy due to VCP mutationGARD ID 21492 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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