Long-term Clinical Outcomes of First and Second Kidney Transplantation in Patients With Biopsy-Proven IgA Nephropathy

IntroductionThe recurrence of IgA nephropathy (IgAN) after kidney transplantation (KT) has an effect on graft survival, but there are few reports about long-term clinical outcomes of KT with recurrent IgAN. This study shows the long-term clinical outcomes of KT in patients with IgAN.MethodsAll recipients who had biopsy-proven IgAN were followed from February 1990 to February 2016. We analyzed overall graft and patient survival rates, incidence of recurrent IgAN, factors affecting graft survival, and IgAN recurrence.ResultsThere were 88 patients with first KT. The mean follow-up duration was 82.5 months. Twenty patients went through graft loss and 1 patient died due to sepsis. IgAN recurred in 15 patients, and 11 patients experienced graft failure. Among the patients who had failed graft after first KT, 7 patients underwent retransplantation. The graft survival period, presence of rejection, and proteinuria were the relevant risk factors for recurrence of IgAN. In the first KT patients, presence of rejection and 1-year serum creatinine were the significant risk factors for graft loss. But recurrence of IgAN was not a relevant risk factor. Overall graft survival rates at 5 and 10 years were 93.8% and 73.1% in the first transplantation group and 100% and 100% in the retransplantation group, respectively.ConclusionAlthough IgAN recurrence was a significant risk factor for graft failure, the patient who underwent retransplantation showed favorable results. Retransplantation should be considered in patients who lost their first graft after recurrence of IgAN.