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Living with Severe congenital hypochromic anemia with ringed sideroblasts

A very rare form of anemia from infancy that needs transfusions and causes iron to build up in the body.

Understanding Severe congenital hypochromic anemia with ringed sideroblasts

Severe congenital hypochromic anemia with ringed sideroblasts is a very rare, severe anemia present from early life.

It is a type of sideroblastic anemia (a blood condition where red blood cells do not use iron well). The red cells are pale and made slowly, and the person needs transfusions. Iron overload occurs. It begins in the newborn and infant period.

Signs & symptoms

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

  • Anemia (low red blood cells or hemoglobin)
  • Pale skin
  • Tiredness (fatigue)
  • Iron overload
  • Low hormone activity from the gonads (hypogonadism)
  • Absent sperm in semen

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. Consider genetic testing

    Changes in STEAP3 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

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 STEAP3 gene?
How should iron levels be monitored and treated?
Which hormone problems should be checked?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesSTEAP3

It is linked to changes in the STEAP3 gene. It is autosomal dominant, so one changed copy of the gene can be enough.

GeneticBlood

Also known as: anemia, hypochromic microcytic, with iron overload type 2; hypochromic microcytic anemia with iron overload 2; severe congenital hypochromic sideroblastic anaemia; severe congenital hypochromic sideroblastic anemia

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Severe congenital hypochromic anemia with ringed sideroblastsGARD ID 17364 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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