Trasplante renal en lupus eritematoso sistémico: comparación de la supervivencia del injerto con otras causas de enfermedad renal terminal / Renal transplantation in systemic lupus erythematosus: Comparison of graft survival with other causes of end-stage renal disease

Introducción: La enfermedad renal terminal (ERT) por nefritis lúpica (NL) se presenta en el 10-30% de los pacientes. Inicialmente, el lupus eritematoso sistémico (LES) fue una contraindicación para el trasplante renal (TR). En la actualidad, la supervivencia del injerto a largo plazo sigue siendo motivo de controversia. El objetivo del estudio fue comparar la supervivencia del TR en los sujetos con LES con otras causas de ERT. Métodos: Se incluyó a todos los pacientes con TR en sujetos con LES, de una cohorte retrospectiva en 2 centros de trasplante. Se realizó un grupo de comparación con otras etiologías de ERT en una relación 2:1 emparejados por edad, sexo y año del trasplante. La supervivencia se evaluó por el método de Kaplan-Meier y por el modelo de riesgos proporcionales de Cox. Resultados: Se incluyó a 25 sujetos con LES. La probabilidad de supervivencia en los sujetos con LES al año, 5 y 10 años fue del 92, el 66 y el 66%, respectivamente, la cual no difirió del grupo de comparación (p=0,39). En el análisis multivariante no existió una diferencia significativa en la supervivencia del injerto entre los 2 grupos (hazard ratio=1.95, IC del 95%, 0,57-6,61; p=0,28). La recurrencia de la NL fue del 8% y no se relacionó con la pérdida del injerto. El rechazo agudo fue la única variable asociada con la pérdida del injerto en los sujetos con LES (HR 16,5, IC del 95%, 1,94-140,1, p=0,01). Conclusiones: El riesgo de pérdida del injerto renal en los sujetos con LES fue similar al de los sujetos con otras causas de ERT

Introduction: End-stage renal disease (ESRD) due to lupus nephritis (LN) occurs in 10%-30% of patients. Initially systemic lupus erythematosus (SLE) was a contraindication for kidney transplantation (KT). Today, long-term graft survival remains controversial. Our objective was to compare the survival after KT in patients with SLE or other causes of ESRD. Methods: All SLE patients who had undergone KT in a retrospective cohort were included. Renal graft survival was compared with that of 50 controls, matched for age, sex, and year of transplantation. Survival was evaluated by the Kaplan-Meier test and the Cox proportional hazards model. Results: Twenty-five subjects with SLE were included. The estimated 1-year, 2- and 5-year survival rates for patients with SLE were 92%, 66% and 66%. Renal graft survival did not differ between patients with SLE and other causes of ESRD (P=.39). The multivariate analysis showed no significant difference in graft survival between the two groups (hazard ratio, HR=1.95, 95% confidence interval [CI] 0.57-6.61, P=.28). The recurrence rate of LN was 8% and was not associated with graft loss. Acute rejection was the only variable associated with graft loss in patients with SLE (HR=16.5, 95% CI 1.94-140.1, P=.01). Conclusions: Renal graft survival in SLE patients did not differ from that reported for other causes of ESRD

Renal transplantation in systemic lupus erythematosus: Comparison of graft survival with other causes of end-stage renal disease. / Trasplante renal en lupus eritematoso sistémico: comparación de la supervivencia del injerto con otras causas de enfermedad renal terminal.

INTRODUCTION: End-stage renal disease (ESRD) due to lupus nephritis (LN) occurs in 10%-30% of patients. Initially systemic lupus erythematosus (SLE) was a contraindication for kidney transplantation (KT). Today, long-term graft survival remains controversial. Our objective was to compare the survival after KT in patients with SLE or other causes of ESRD. METHODS: All SLE patients who had undergone KT in a retrospective cohort were included. Renal graft survival was compared with that of 50 controls, matched for age, sex, and year of transplantation. Survival was evaluated by the Kaplan-Meier test and the Cox proportional hazards model. RESULTS: Twenty-five subjects with SLE were included. The estimated 1-year, 2- and 5-year survival rates for patients with SLE were 92%, 66% and 66%. Renal graft survival did not differ between patients with SLE and other causes of ESRD (P=.39). The multivariate analysis showed no significant difference in graft survival between the two groups (hazard ratio, HR=1.95, 95% confidence interval [CI] 0.57-6.61, P=.28). The recurrence rate of LN was 8% and was not associated with graft loss. Acute rejection was the only variable associated with graft loss in patients with SLE (HR=16.5, 95% CI 1.94-140.1, P=.01). CONCLUSIONS: Renal graft survival in SLE patients did not differ from that reported for other causes of ESRD.