09 October 2018 : Original article
Risk Factors of Acute Rejection in Patients with BK Nephropathy After Reduction of ImmunosuppressionChung Hee Baek1ABCE, Hyosang Kim1AB, Hoon Yu2AC, Won Seok Yang1AF, Duck Jong Han3AF, Su-Kil Park1ADEF*
Ann Transplant 2018; 23:704-712
BACKGROUND: BK nephropathy (BKN) affects graft function and increases the risk of graft failure. The reduction of immunosuppression is the main treatment for BKN. However, acute rejection may develop following immunosuppression reduction, and data regarding the risk factors of acute rejection during the post-reduction period are insufficient.
MATERIAL AND METHODS: Of 758 patients who received a kidney transplantation (KT) between 2008 and 2011, 79 who underwent immunosuppression reduction as BKN treatment were enrolled. The risk factors of acute rejection after immunosuppression reduction were identified using multivariate logistic regression analysis.
RESULTS: During the median follow-up period (75 months), acute rejection developed in 21.5% of study group patients and in 22.5% of KT recipients without BKN. The rejection group showed a trend of higher body mass index (24.13±3.92 vs. 22.40±3.31 kg/m², P=0.070) and lower tacrolimus levels than the no rejection group, although mycophenolate mofetil (MMF) doses were not lower in the rejection group. The rejection group showed worse graft survival than the no rejection group (P=0.001 by the log rank test). A greater number of patients in the rejection group exhibited reduced calcineurin inhibitor (CNI) level by >20% at 1 month after initial BKV detection (34.2% vs. 7.9%, P=0.008). Multivariate analysis indicated that the peak BKV PCR level (odds ratio [OR], 0.136; 95% confidence interval [CI], 0.025–0.732; P=0.020), MMF discontinuation (vs. MMF reduction; OR, 0.112; 95% CI, 0.020-0.618; P=0.012) and CNI level reduction >20% (OR, 33.752; 95% CI, 4.263–267.251; P=0.001) were significantly associated with acute rejection.
CONCLUSIONS: Acute rejection after immunosuppression reduction for BKN showed worse allograft survival than the patients without acute rejection. In addition, a CNI dose reduction >20% at 1 month after the initial BKV detection can increase the risk of acute rejection.
Keywords: BK Virus, Graft Rejection, Kidney Transplantation
06 Jun 2023 : Original articleA 15-Year Retrospective Study of Supportive Extracorporeal Therapies Including Plasma Exchange and Continuo...
Ann Transplant In Press; DOI: 10.12659/AOT.939745
02 Jun 2023 : Original articleSurvival analysis of transplant-associated thrombotic microangiopathy under different diagnostic criteria a...
Ann Transplant In Press; DOI: 10.12659/AOT.939890
10 May 2023 : Original articleIncidence of Thromboembolic Complications Following Kidney Transplantation with Short and Extended Aspirin ...
Ann Transplant In Press; DOI: 10.12659/AOT.939143
Most Viewed Current Articles
24 Aug 2021 : Review articleNormothermic Machine Perfusion (NMP) of the Liver – Current Status and Future Perspectives
Ann Transplant 2021; 26:e931664
26 Jan 2022 : Review articleRecurrence of Hepatocellular Carcinoma After Liver Transplantation: Risk Factors and Predictive Models
Ann Transplant 2022; 27:e934924
29 Dec 2021 : Original articleEfficacy and Safety of Tacrolimus-Based Maintenance Regimens in De Novo Kidney Transplant Recipients: A Sys...
Ann Transplant 2021; 26:e933588
15 Mar 2022 : Case reportCombined Liver, Pancreas-Duodenum, and Kidney Transplantation for Patients with Hepatitis B Cirrhosis, Urem...
Ann Transplant 2022; 27:e935860