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Living with Pearson syndrome

A severe inherited condition starting in infancy that affects blood cell production in the bone marrow, the pancreas, and other organs.

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Understanding Pearson syndrome

Pearson syndrome is a severe inherited disorder that usually begins in infancy and affects the bone marrow, pancreas, and other organs.

It is a bone marrow failure disorder, which means the bone marrow doesn't make blood cells properly. Most people have anemia, which can cause pale skin, weakness, and tiredness. Some have low white blood cells (neutropenia) and low platelets (thrombocytopenia). The pancreas may not work well, and some people develop diabetes.

Signs & symptoms

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

  • Anemia (low red blood cells)
  • Low white blood cells (neutropenia) and frequent infections
  • Low platelets (thrombocytopenia)
  • Trouble digesting food (pancreas problems)
  • Slow growth
  • Enlarged liver or spleen

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 blood and bone marrow specialists, digestive system specialists, genetic specialists and hormone 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

    Muscular Dystrophy Association, United Mitochondrial Disease Foundation and MitoAction may keep lists of experts for this condition.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Digestive system specialists (gastroenterologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
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
How often should blood counts be checked?
How can we watch the pancreas, liver, and blood sugar?
Which specialists should be on the care team?

Quick facts

Symptoms usually startfrom Birth to Childhood
InheritanceMitochondrial

Changes in the genes (also called variants) cause this condition. GARD describes it as mitochondrial, which means it involves the cell's energy-making parts. GARD doesn't list a specific gene.

GeneticEndocrineGastrointestinalBloodInherited MetabolicMitochondrial

Also known as: pearson marrow-pancreas syndrome; pearson's syndrome; sideroblastic anemia with marrow cell vacuolization and exocrine pancreatic dysfunction

Patient organizations

Source: NIH GARD · Pearson syndromeGARD ID 7343 · 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

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Embrace the Ask: How to Seek The Support You Need

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Explore research for Pearson syndrome

Explore actively recruiting Pearson syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pearson syndrome 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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