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Living with Adenosine monophosphate deaminase deficiency

A condition that can affect muscles, often with tiredness, pain, or cramps after exercise, though many people have no symptoms.

Understanding Adenosine monophosphate deaminase deficiency

Adenosine monophosphate (AMP) deaminase deficiency is a condition that can affect the muscles used for movement.

Many people with it have no symptoms. Those who do typically feel tired, or have muscle pain or cramps after exercise. After strenuous activity, they often tire faster and stay tired longer than expected. Rarely, people have more severe weakness, low muscle tone, or muscle wasting, but it is unclear whether these come from this condition alone. Exercise problems usually show up in childhood or early adulthood.

Signs & symptoms

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

  • Muscle tiredness with exercise
  • Muscle pain with exercise (myalgia)
  • Weakness in the arms or legs
  • Muscle aches
  • Muscle spasms

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 AMPD3 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, United Mitochondrial Disease Foundation and MitoAction 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, United Mitochondrial Disease Foundation, MitoAction
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 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
Is genetic testing for AMPD3 available?
How much exercise is safe for me?
Could another condition be adding to my muscle symptoms?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Recessive, Mitochondrial
GenesAMPD3

Changes in the AMPD3 gene cause this condition. GARD lists autosomal recessive and mitochondrial inheritance.

GeneticNeurologicalInherited MetabolicMitochondrial

Also known as: amp deaminase deficiency; deficiency of adenosine monophosphate deaminase; deficiency of adenylic acid deaminase; deficiency of amp aminase; deficiency of amp deaminase; myoadenylate deaminase deficiency

Patient organizations

Source: NIH GARD · Adenosine monophosphate deaminase deficiencyGARD ID 547 · 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 Adenosine monophosphate deaminase deficiency.

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