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Updated: Feb 7, 2026
07:30
Robot-Assisted Kidney Transplantation
Published on: July 19, 2021
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ABO-Incompatible Kidney Transplant Outcomes: A Meta-Analysis
Annelies E de Weerd1, Michiel G H Betjes
1Department of Nephrology and Kidney Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands.
Summary
ABO-incompatible kidney transplants show good outcomes, but with slightly lower graft survival compared to ABO-compatible transplants. Patients undergoing ABO-incompatible procedures face increased risks of infection and bleeding.
Area of Science:
- Nephrology
- Transplantation Immunology
- Medical Statistics
Background:
- ABO blood group-incompatible kidney transplantation is a growing procedure with substantial contribution to living donor kidney programs.
- While considered safe with noninferior outcomes in prior studies, direct comparisons with ABO-compatible controls are needed.
- Understanding comparative outcomes is crucial for optimizing kidney transplant strategies.
Purpose of the Study:
- To compare the outcomes of ABO-incompatible kidney transplantation with ABO-compatible kidney transplantation.
- To ascertain differences in graft survival, patient survival, and complication rates.
- To evaluate the safety and efficacy of ABO-incompatible kidney transplantation relative to ABO-compatible procedures.
Main Methods:
- A systematic literature search was conducted across multiple databases (Embase, Medline, Cochrane, Web-of-Science, Google Scholar).
- Meta-analyses of observational studies were performed adhering to MOOSE guidelines, with bias assessed using the Newcastle-Ottawa scale.
- A meta-analysis of 26 studies involving 1346 ABO-incompatible and 4943 ABO-compatible kidney transplant patients was conducted, including subgroup analysis on antibody removal techniques.
Main Results:
- One-year graft survival was 96% for ABO-incompatible versus 98% for ABO-compatible kidney transplants (RR 0.97).
- ABO-incompatible recipients had a higher incidence of infectious causes of death (49% vs 13%), antibody-mediated rejection, severe nonviral infections, and bleeding.
- No significant differences in baseline immunologic risk parameters were observed between the groups, with low risk of bias and low statistical heterogeneity.
Conclusions:
- ABO-incompatible kidney transplant recipients achieve good outcomes.
- However, outcomes are demonstrably inferior to those of ABO-compatible control patients.
- Increased risks of infection and bleeding necessitate careful management in ABO-incompatible kidney transplantation.
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