Shall poorly HL-A matched cadaveric kidneys be transplanted or discarded?

Area of Science:

• Nephrology
• Transplantation Immunology

Background:

• Cadaveric kidney transplantation is a critical treatment for end-stage renal disease.
• Graft survival is influenced by human leukocyte antigen (HLA) matching between donor and recipient.

Purpose of the Study:

• To evaluate the impact of HLA mismatches on graft survival in cadaveric kidney transplantation.
• To determine the viability of transplanting kidneys with a higher number of antigen mismatches.

Main Methods:

• Analysis of 101 cadaveric kidney transplants performed between 1971-1974.
• Categorization of grafts based on HLA compatibility: 0-2 mismatches (A, B, C, D matches) and 3-4 mismatches (E, G matches).
• Comparison of graft survival rates at 9 months post-transplantation.

Main Results:

• Graft survival was significantly lower (33%) in kidneys with 3 or 4 HLA mismatches compared to those with fewer mismatches (p < 0.01).
• Retransplantations showed survival rates comparable to primary transplantations.
• A total of 101 kidneys were analyzed, with varying degrees of HLA compatibility.

Conclusions:

• A higher number of HLA mismatches negatively impacts short-term graft survival in cadaveric kidney transplantation.
• Despite reduced survival rates, the study advocates for continuing transplantation of poorly matched cadaveric kidneys.
• Further research is warranted to understand the long-term outcomes and optimize strategies for high-mismatch transplants.