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Black kidney transplant recipients have worse graft survival than white recipients. Speculation regarding etiology has focused on differences in human lymphocyte antigens (HLA). Some suggest that improvements in graft survival would be obtained if donor and recipient race were matched. We reviewed 236 cadaver transplants performed over 9 years at a single center using an HLA-match-driven allocation system and a uniform immunosuppressive protocol to determine the impact of donor race on graft survival. A multivariate analysis of graft survival using patient race, sex, age, transplant number, current and maximum plasma renin activity, donor race, cold ischemia time and HLA mismatch, the need for dialysis, and the presence of rejection as independent variables. Sixty percent of recipients were black, and 82% were primary transplants; 28 kidneys (12%) were from black donors. The 112 patients with the same race donor had identical 5-year graft survival as the 124 who had a different race donor (40%; P = 0.1726). The 5-year survival of the 88 white recipients of white donor organs was better than that of the 120 black recipients of white donor organs (54% vs. 42%, respectively; P = 0.0398). Black recipients (t1/2 = 37 months) did worse than white recipients (t1/2 = 60 months) regardless of organ source (P = 0.023). In the multivariate analysis, neither donor nor recipient race were an independent variable in predicting graft survival. Rejection (RR = 2.9) and the need for dialysis on the transplant admission (RR = 4.1) were the only factors that predicted poor survival. Black recipients had more rejection (P = 0.04) but not more need for dialysis posttransplant regardless of donor race. Donor race did not affect graft survival in this series. The effect of recipient race on graft survival was due to an increased incidence of rejection episodes in black recipients, which was independent of HLA mismatch. These data suggest that improvements in immunosuppression, not changes in allocation, are needed to improve graft survival.
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M DeboisBlanc, and
C Saul, and
R O'Donovan, and
E Etheredge
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E Etheredge
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M DeboisBlanc, and
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