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  • Title: A switch from conventional twice-daily tacrolimus to once-daily extended-release tacrolimus in stable kidney transplant recipients.
    Author: Hatakeyama S, Fujita T, Yoneyama T, Yoneyama T, Koie T, Hashimoto Y, Saitoh H, Funyu T, Narumi S, Ohyama C.
    Journal: Transplant Proc; 2012 Jan; 44(1):121-3. PubMed ID: 22310594.
    Abstract:
    BACKGROUND: Extended-release tacrolimus (TAC-ER) was developed to provide a more convenient treatment compliance and improve safety by avoiding toxic peak levels. We prospectively evaluated the safety and effectiveness of a 1:1 dose switch from twice-daily tacrolimus to once-daily TAC-ER in stable kidney transplant recipients and assessed their satisfaction with the regimen. PATIENTS AND METHODS: Tacrolimus was switched to TAC-ER (1:1 dose) in 12 kidney transplant recipients with stable renal function from March 2010 to August 2011. The posttransplantation follow-up period was 7.6 ± 4.3 years (range 1.5-13.2 years). No patient had diabetes mellitus in this group. We evaluated the tacrolimus trough levels, serum creatinine, potassium, glucose, glycohemoglobin (HbA1c), and urine protein concentrations once a month from 6 months prior to 1 year after switching. A satisfaction survey for TAC-ER treatment was performed 3 months after the switch. The questionnaire included administration compliance questions such as "forget to take less often," "easy to carry," "easy to store," and "general satisfaction." RESULTS: After the switch to TAC-ER, we observed a quick and sustained 25% decrease in TAC trough levels from 4.8 ± 1.0 to 3.6 ± 0.8 (P = .0002). No significant differences in serum creatinine, potassium, glucose, HbA1c, or urine protein concentration were observed during the 14.6 ± 2.6 months' follow-up period. No recipient experienced acute rejection. The satisfaction survey demonstrated that the stable kidney transplant recipients were satisfied with the switch. CONCLUSIONS: A switch from twice-daily tacrolimus to once-daily TAC-ER (1:1 dose) was safe and effective. TAC-ER can improve treatment compliance in stable kidney transplant recipients.
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