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Living with Congenital dyserythropoietic anemia, type I

An inherited blood condition with moderate to severe anemia, usually found in childhood, and a risk of too much iron in the body.

Understanding Congenital dyserythropoietic anemia, type I

Congenital dyserythropoietic anemia (CDA) type I is an inherited blood disorder that causes moderate to severe anemia.

It is usually diagnosed in childhood or adolescence, though sometimes it is found before birth. Many people have yellow skin and eyes (jaundice) and an enlarged liver and spleen. The body also absorbs too much iron, which can build up and affect the heart, liver and blood sugar. Rarely, babies are born with finger or toe differences.

Signs & symptoms

Symptoms vary from person to person. GARD's summary lists these features:

  • Moderate to severe anemia
  • Yellow skin and eyes (jaundice)
  • Enlarged liver and spleen
  • Too much iron in the body (iron overload)
  • Finger or toe differences (rare)

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 and genetic specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
Should we have genetic testing for the CDAN1 and C15ORF41 genes?
How should iron levels be monitored and treated?
Should the heart, liver and blood sugar be checked?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive

It usually results from changes in the CDAN1 gene (about 90 percent of cases) or the C15ORF41 gene (about 1 percent). In about 9 percent no cause is found. It is autosomal recessive.

GeneticBlood

Also known as: cda i; cda type 1; cda type i; congenital dyserythropoietic anemia type 1; congenital dyserythropoietic anemia type i; dyserythropoietic anemia, congenital type 1

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Congenital dyserythropoietic anemia, type IGARD ID 2000 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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