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HLA-DRB1 matching as a recipient selection criterion in cadaveric renal transplantation

T Kobayashi1, I Yokoyama, K Uchida

  • 1Department of Surgery II, Nagoya University School of Medicine, Japan.

Transplantation
|June 1, 1993
PubMed

Insights

Optimizing kidney transplants requires precise human leukocyte antigen (HLA) matching. DNA-level HLA-DRB1 matching significantly reduces acute rejection in cadaveric renal transplantation, improving graft outcomes.

Area of Science:

  • Immunogenetics
  • Transplantation immunology
  • Nephrology

Background:

  • Human leukocyte antigen (HLA) matching is crucial for successful renal transplantation.
  • Current HLA-DR matching relies on serological methods, which may not fully capture genetic disparities.
  • The impact of high-resolution HLA-DRB1 DNA-level matching on transplant outcomes requires further investigation.

Purpose of the Study:

  • To compare the effectiveness of HLA-DRB1 DNA-level matching versus serological HLA-DR matching.
  • To evaluate the impact of HLA-DRB1 matching on acute rejection rates.
  • To assess the effect of HLA-DRB1 matching on long-term graft survival in cadaveric renal transplantation.

Main Methods:

  • Retrospective analysis of primary cadaveric renal transplant recipients.
  • Comparison of acute rejection incidence based on HLA-DRB1 mismatching at the DNA level.
  • Evaluation of five-year graft survival rates according to HLA-DRB1 matching status.

Main Results:

  • Patients with zero HLA-DRB1 mismatches (DNA level) had significantly lower acute rejection rates (15%) compared to those with one or two mismatches (48%) among serological HLA-DR zero mismatches.
  • Five-year graft survival was 100% for zero HLA-DRB1 mismatches versus 76% for one or two mismatches, though not statistically significant.
  • The influence of HLA-DRB1 DNA-level matching on rejection aligns with findings in living-related transplantation.

Conclusions:

  • HLA-DRB1 matching at the DNA level significantly impacts acute rejection incidence in cadaveric renal transplantation.
  • Selecting recipients based on zero HLA-DRB1 mismatches at the DNA level may improve graft outcomes.
  • High-resolution HLA typing at the DNA level offers advantages over serological matching for renal transplantation.

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