BACKGROUND: The common endpoint in the treatment of antibody-mediated rejection (AMR) is functional reversal (creatinine levels). Reduction of human leukocyte antigen (HLA) antibody strength is not commonly considered as an essential endpoint for AMR resolution. The purpose of this study was to determine whether reduction in HLA antibody intensity in patients with histologic AMR reversal influences long-term renal allograft survival. METHODS: Renal allograft recipients were included if he or she had a biopsy diagnosis of AMR (between August 2000 and October 2008) and serial evaluation for HLA antibodies prebiopsy and postbiopsy. Antibody reduction was defined as mean fluorescence intensity decrease more than 50% in highest intensity antibody after AMR therapy and the absence of new antibody formation. Patients were treated with plasmapheresis, thymoglobulin/OKT3, and corticosteroids. Survival analysis was performed using STATA/MP v10 (College Station, TX). RESULTS: Twenty-eight patients were analyzed. Antibody reduction failed to occur in 22 of 28 cases. Baseline characteristics were similar between groups. Antibody nonresponders had significantly shorter allograft survival time (61.4 months) compared with antibody responders (no failures) (P=0.04, log-rank test). CONCLUSIONS: In conclusion, failure to significantly reduce antibody levels and prevent new formation was strongly predictive of allograft loss. This observation suggests that the therapeutic intervention that reduces antibody production may prolong graft survival in transplantation.
BACKGROUND: The common endpoint in the treatment of antibody-mediated rejection (AMR) is functional reversal (creatinine levels). Reduction of human leukocyte antigen (HLA) antibody strength is not commonly considered as an essential endpoint for AMR resolution. The purpose of this study was to determine whether reduction in HLA antibody intensity in patients with histologic AMR reversal influences long-term renal allograft survival. METHODS: Renal allograft recipients were included if he or she had a biopsy diagnosis of AMR (between August 2000 and October 2008) and serial evaluation for HLA antibodies prebiopsy and postbiopsy. Antibody reduction was defined as mean fluorescence intensity decrease more than 50% in highest intensity antibody after AMR therapy and the absence of new antibody formation. Patients were treated with plasmapheresis, thymoglobulin/OKT3, and corticosteroids. Survival analysis was performed using STATA/MP v10 (College Station, TX). RESULTS: Twenty-eight patients were analyzed. Antibody reduction failed to occur in 22 of 28 cases. Baseline characteristics were similar between groups. Antibody nonresponders had significantly shorter allograft survival time (61.4 months) compared with antibody responders (no failures) (P=0.04, log-rank test). CONCLUSIONS: In conclusion, failure to significantly reduce antibody levels and prevent new formation was strongly predictive of allograft loss. This observation suggests that the therapeutic intervention that reduces antibody production may prolong graft survival in transplantation.
Authors: Elaine Y Cheng; Matthew J Everly; Hugo Kaneku; Nubia Banuelos; Laura J Wozniak; Robert S Venick; Elizabeth A Marcus; Suzanne V McDiarmid; Ronald W Busuttil; Paul I Terasaki; Douglas G Farmer Journal: Transplantation Date: 2017-04 Impact factor: 4.939
Authors: Nils Lachmann; Michael Duerr; Constanze Schönemann; Axel Pruß; Klemens Budde; Johannes Waiser Journal: J Immunol Res Date: 2017-01-31 Impact factor: 4.818
Authors: Audrey Uffing; Luis G Hidalgo; Ciaran McMullan; Jacqueline Perry; Edgar L Milford; Naoka Murakami; Melissa Y Yeung; Indira Guleria; Isabelle G Wood; Enver Akalin; Jamil Azzi; Anil K Chandraker; Leonardo V Riella Journal: Transplant Direct Date: 2019-04-15
Authors: Akhil Sharma; Dana R Jorgensen; Rajil B Mehta; Puneet Sood; Chethan M Puttarajappa; Christine M Wu; Amit D Tevar; Michele Molinari; Adriana Zeevi; Sundaram Hariharan Journal: Transpl Int Date: 2022-03-17 Impact factor: 3.782