• Chang-Kwon Oh, Kyu Ha Huh, Jong Soo Lee, Hong Rae Cho, and Yu Seun Kim.
• Department of Surgery, Ajou University School of Medicine, Suwon, Korea.
• Yonsei Med. J. 2014 Sep 1; 55 (5): 1341-7.

PurposeThe purpose of this study was to compare once-daily tacrolimus with twice-daily tacrolimus in terms of safety, efficacy, and patient satisfaction.Materials And MethodsThis prospective, randomized, open-label, multicenter study was conducted at three institutes. Patients in the investigational group were converted from tacrolimus twice daily to the same dose of extended-release tacrolimus once daily at 1 month post-transplantation, while patients in the control group were maintained on tacrolimus twice daily. The efficacies, safeties, and patient satisfaction for the two drugs at 6 months post-transplantation were compared.ResultsSixty patients were enrolled and randomized to the investigational group (28 of 29 patients completed the study) or the control group (26 of 31 patients completed the study). At 6 months post-transplantation, composite efficacy failure rates including the incidences of biopsy-confirmed acute rejection in the investigational and control groups were 0% and 10.7%, respectively; patient survival was 100% in each group. No difference in estimated glomerular filtration rate values were observed at 6 months post-transplantation (p=0.97). The safety and satisfaction profile (immunosuppressant therapy barrier scale) of once-daily tacrolimus was comparable with that of twice-daily tacrolimus (p=0.35).ConclusionConversion from twice-daily tacrolimus to once-daily tacrolimus one month after transplantation is safe and effective.

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