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Related Experiment Videos

ABO-incompatibility in solid organ transplantation.

L Rydberg1

  • 1Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska University Hospital, SE-413 45 Göteborg, Sweden. lennart.rydberg@vgregion.se

Transfusion Medicine (Oxford, England)
|September 5, 2001
PubMed
Summary

ABO-incompatible solid organ transplantation, particularly kidney and liver transplants in children, shows promising results despite historical challenges. Advances in immunosuppression have improved outcomes for ABO-barrier crossing in organ transplants.

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Area of Science:

  • Transplantation immunology
  • Immunogenetics
  • Solid organ transplantation

Background:

  • The ABO blood group system is a critical factor in solid organ transplantation, historically limiting transplants across ABO barriers.
  • Early attempts at ABO-incompatible kidney transplantation yielded poor results, with significant graft losses.
  • Limited donor availability, especially for cadaveric organs in Japan, has driven innovation in ABO-incompatible transplantation.

Purpose of the Study:

  • To review the historical context and evolution of ABO-incompatible solid organ transplantation.
  • To assess the outcomes of ABO-incompatible transplantation across different organs (kidney, liver, heart, lung).
  • To highlight recent advancements and successes in overcoming ABO-barrier challenges.

Main Methods:

Related Experiment Videos

  • Review of historical clinical trials and case series involving ABO-incompatible solid organ transplantation.
  • Analysis of outcomes based on organ type, donor type (living vs. deceased), and recipient age.
  • Examination of evolving immunosuppressive protocols and pre-transplant conditioning strategies.

Main Results:

  • Successful long-term kidney grafts were achieved in early trials using A2 subgroup kidneys in O recipients.
  • Over 300 ABO-incompatible kidney transplantations have been performed globally since 1989 with varying success.
  • ABO-incompatible liver transplants in children under three, especially with living donors, and recent pediatric heart transplants show high success rates.
  • ABO-incompatible heart, heart-lung, and lung transplantations have generally had poor outcomes, with few exceptions.

Conclusions:

  • Crossing the ABO barrier in solid organ transplantation has evolved from limited emergency procedures to more established protocols.
  • Pediatric ABO-incompatible liver and heart transplantation, particularly with living donors, represents a significant success.
  • Continued research and protocol refinement are essential for improving outcomes in ABO-incompatible transplantation for all organs.