BACKGROUND: The aim of the present study was to assess long-term survival of cadaveric second kidney allografts performed in our center and to determine risk factors predictive of long-term graft outcome. METHODS: Of 1704 kidney transplantations performed between January 1985 and March 1998, 233 were second grafts. The majority of the recipients were sensitized. All patients were treated with the same quadruple immunosuppressive regimen. RESULTS: Kaplan-Meier analysis documented graft survival of 89% at 1 year, 76% at 5 years, and 53% at 10 years. Graft survival was similar for second and primary kidney transplants performed during the same period of time. When long-term second graft survival was examined, only two risk factors were found to be significant: (1) the degree of human leukocyte antigen (HLA) DR mismatch (MM) and (2) the number of acute rejection episodes. Multivariate analysis of several pre- and posttransplant variables also confirmed the importance of HLA MM (DR> A), but also, identified serum creatinine at 12 months as the most significant predictor of graft survival. In addition, the Cox proportional hazards model revealed that only the year of transplantation had an independent significant effect on acute rejection occurrence (RR = 0.591, 95%CI 0.437 to 0.801, P < 0.0007). Indeed, the incidence of acute rejection was found to decrease over time (44% of patients experienced at least one episode of acute rejection before 1990 vs. 17% after 1990). CONCLUSION: Finally, second graft long-term outcome shows an improved evolution according to the time period resulting from a strong decrease in acute rejection incidence and the impact of creatinine at 12 months.
BACKGROUND: The aim of the present study was to assess long-term survival of cadaveric second kidney allografts performed in our center and to determine risk factors predictive of long-term graft outcome. METHODS: Of 1704 kidney transplantations performed between January 1985 and March 1998, 233 were second grafts. The majority of the recipients were sensitized. All patients were treated with the same quadruple immunosuppressive regimen. RESULTS: Kaplan-Meier analysis documented graft survival of 89% at 1 year, 76% at 5 years, and 53% at 10 years. Graft survival was similar for second and primary kidney transplants performed during the same period of time. When long-term second graft survival was examined, only two risk factors were found to be significant: (1) the degree of human leukocyte antigen (HLA) DR mismatch (MM) and (2) the number of acute rejection episodes. Multivariate analysis of several pre- and posttransplant variables also confirmed the importance of HLA MM (DR> A), but also, identified serum creatinine at 12 months as the most significant predictor of graft survival. In addition, the Cox proportional hazards model revealed that only the year of transplantation had an independent significant effect on acute rejection occurrence (RR = 0.591, 95%CI 0.437 to 0.801, P < 0.0007). Indeed, the incidence of acute rejection was found to decrease over time (44% of patients experienced at least one episode of acute rejection before 1990 vs. 17% after 1990). CONCLUSION: Finally, second graft long-term outcome shows an improved evolution according to the time period resulting from a strong decrease in acute rejection incidence and the impact of creatinine at 12 months.
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