Immune checkpoint inhibitor therapy in solid organ transplant recipients: A patient-centered systematic review

Juliya Fisher1, Nathalie Zeitouni2, Weijia Fan3

  • 1Department of Dermatology, Columbia University Irving Medical Center, New York, New York.

Abstract

Insights

Immunotherapy use in solid organ transplant recipients (SOTRs) with metastatic cancer shows significant risks of organ rejection. Despite cautious use, cancer progression remains a more frequent cause of death than graft rejection in this population.

Area of Science:

  • Oncology
  • Transplant Immunology

Background:

  • Immunotherapies have advanced cancer treatment.
  • Solid organ transplant recipients (SOTRs) are typically excluded from immunotherapy trials.
  • Limited data exists on immunotherapy safety and efficacy in SOTRs with metastatic cancers.

Purpose of the Study:

  • To systematically review the safety and efficacy of immunotherapies in SOTRs with metastatic cancers.
  • To analyze organ rejection rates and mortality causes in SOTRs receiving immunotherapy.

Main Methods:

  • Systematic review of existing literature.
  • Statistical analysis using Fisher's exact test and Kruskal-Wallis test.

Main Results:

  • 37% of SOTRs experienced organ rejection; 14% died from rejection.
  • Nivolumab had the highest rejection rate (52.2%), followed by pembrolizumab (26.7%) and ipilimumab (25%).
  • Kidney transplant recipients showed the highest rejection rates (40.1%). Cancer progression caused death in 64% of patients, with ipilimumab associated with the highest disease-related mortality (75%). Pembrolizumab demonstrated the highest overall response rate (40%).

Conclusions:

  • Physicians should exercise caution when administering immunotherapy to SOTRs.
  • While organ rejection is a concern, it is not the most common cause of death in this patient group.
  • Further research with larger sample sizes is needed to fully understand immunotherapy outcomes in SOTRs.

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