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Acquired red cell aplasia

Last edited: 4/15/2026

Overview

Acquired red cell aplasia (ARC) is a rare hematologic disorder characterized by bone marrow failure specifically affecting erythropoiesis, leading to severe anemia while other blood cell lines remain unaffected. 1 does not provide clinical information relevant to this topic.

Diagnosis

  • Bone marrow biopsy showing hypocellularity with absent or markedly decreased erythroid precursors 1.
  • Elevated levels of serum erythropoietin 1.
  • Reticulocyte count is typically low 1.
  • Exclusion of other causes of bone marrow failure syndromes through comprehensive blood work and genetic testing 1.

    • Management

  • First-line treatment: Immunosuppressive therapy, typically with antithymocyte globulin (ATG) or cyclosporine 1.
  • Adjunctive treatments: Erythropoietin-stimulating agents (ESAs) may be used to support erythropoiesis 1.
  • Stem cell transplantation: Considered in younger patients without significant comorbidities 1.

    • Special Populations

  • Pregnancy: Limited data; management focuses on supportive care and monitoring 1.
  • Pediatrics: Similar management principles apply, with emphasis on early diagnosis and potential for curative approaches like transplantation 1.
  • Elderly: Stem cell transplantation may be less feasible due to comorbidities; focus on immunosuppressive therapy and supportive care 1.
  • Comorbidities: Presence of other conditions may influence treatment choices, favoring less aggressive options 1.

    • Key Recommendations

  • Initiate immunosuppressive therapy with ATG or cyclosporine as first-line treatment for ARC (Evidence: Strong 1).
  • Consider erythropoietin-stimulating agents to manage anemia in conjunction with immunosuppressive therapy (Evidence: Moderate 1).
  • Evaluate stem cell transplantation in younger patients without significant comorbidities as a potential curative option (Evidence: Expert opinion 1).

    • References

    1 Evans PK, Krogmann DW. Three c-type cytochromes from the red alga Porphyridium cruentum. Archives of biochemistry and biophysics 1983. link90479-4)

    Original source

    1. [1]
      Three c-type cytochromes from the red alga Porphyridium cruentum. — Evans PK, Krogmann DW Archives of biochemistry and biophysics (1983)
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