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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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Immunotherapy-associated Autoimmune Hemolytic Anemia.

Steven R Hwang1, Antoine N Saliba1, Alexandra P Wolanskyj-Spinner2

  • 1Division of Hematology, Department of Medicine, Mayo Clinic, 200 First street Southwest, Rochester, Minnesota 55905, USA; Division of Medical Oncology, Department of Oncology, Mayo Clinic, 200 First Street Southwest, Rochester, Minnesota 55905, USA.

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Summary
This summary is machine-generated.

Immune checkpoint inhibitors (ICIs) can cause rare autoimmune hemolytic anemia (AIHA). This review details AIHA diagnosis, management strategies, and prognosis in patients receiving cancer immunotherapy.

Keywords:
Autoimmune hemolytic anemiaImmune checkpoint inhibitorsImmune-related adverse eventImmunotherapy

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Area of Science:

  • Oncology
  • Immunology
  • Hematology

Background:

  • Immunotherapy, particularly immune checkpoint inhibitors (ICIs), is increasingly used for cancer treatment.
  • ICIs target cytotoxic T-lymphocyte-associated protein 4 and programmed cell death protein 1 pathways.
  • Autoimmune hemolytic anemia (AIHA) is a rare but severe immune-related adverse event associated with ICI therapy.

Purpose of the Study:

  • To review the diagnosis and management of immunotherapy-related AIHA (ir-AIHA).
  • To provide an algorithmic approach for managing ir-AIHA based on anemia severity.
  • To discuss ICI resumption, prognosis, and recurrence risk for ir-AIHA.

Main Methods:

  • Literature review of immunotherapy-related AIHA.
  • Analysis of diagnostic criteria for AIHA in the context of ICI use.
  • Development of a management algorithm considering anemia severity.

Main Results:

  • AIHA is an emerging adverse event in patients treated with ICIs.
  • An algorithmic approach aids in the diagnosis and management of ir-AIHA.
  • Guidance on ICI re-challenge and prognosis, including recurrence, is crucial.

Conclusions:

  • Immunotherapy-related AIHA requires careful diagnosis and management.
  • A structured approach to ir-AIHA can optimize patient outcomes.
  • Understanding the prognosis and recurrence risk is essential for long-term care.