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  • Title: Risk factors for graft loss in patients with recurrent IGA nephropathy after renal transplantation.
    Author: Namba Y, Oka K, Moriyama T, Ichimaru N, Kyo M, Kokado Y, Ito T, Imai E, Aozasa K, Okuyama A, Takahara S.
    Journal: Transplant Proc; 2004 Jun; 36(5):1314-6. PubMed ID: 15251321.
    Abstract:
    BACKGROUND: The recurrence rate of IgA nephropathy (IgAN) in transplanted kidneys has been reported to be >50%. Although recurrent IgAN has a benign clinical course, recent data suggest that it leads to graft loss in a substantial number of patients. METHODS: We performed a retrospective single-center analysis of 34 renal transplant recipients, with biopsy-proven IgAN as the cause of end-stage renal failure. RESULTS: Renal allograft biopsies were performed in 30 patients, of whom 24 did and 6 did not have biopsy-confirmed recurrent transplant IgAN. Recurrent transplant IgAN was more often detected in men and at later timepoints after post-transplantation. Four patients with recurrent transplant IgAN progressed to graft failure. Progression to graft failure was associated with worsened renal function, higher systolic blood pressure, and the lack of presenation of angiotensin-converting enzyme inhibitors (ACEs) at the time of allograft biopsy. Immunologic factors such as frequency of acute rejection, HLA typing, and immunosuppression did not show a relation to recurrence or graft loss. CONCLUSIONS: Recurrent transplant IgAN increased with long-term graft survival and risk factors for graft loss due to recurrent IgAN were similar to those among IgAN in native kidneys.
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