Trough level from twice daily to once daily tacrolimus in early conversion kidney transplant recipients: a prospective study
International journal of clinical pharmacy(2017)
摘要
Background Early conversion from twice-daily tacrolimus (TAC-BID) to once-daily tacrolimus (TAC-OD) provides a greater benefit of reducing under-exposure of TAC-OD during the first period after transplantation. Information regarding the conversion dose among Asian kidney transplant recipients is still limited. Objective This study aimed to compare the trough levels (C min ) of TAC-BID (Prograf ® ) and TAC-OD (Advagraf ® ). The values were obtained from early conversion intervention by 1:1 milligram per-milligram. Setting A university-based hospital. Method This study employed a single-center, open-label, prospective and single-armed design. Fifteen de novo standard risk kidney transplant recipients were enrolled. Fourteen days after transplantation, the C min of TAC-BID (pre-conversion C min ) was determined. Subsequently, TAC-BID was converted to TAC-OD with a similar dose. The C min of TAC-OD was first measured at a steady state (immediate post-conversion C min ) and compared. All enrolled patients received therapeutic monitoring at the first and second months. Main outcome measure Pre-conversion C min of TAC-BID and immediate post-conversion C min of TAC-OD. Results The immediate post-conversion C min was found to be 23% lowered than the pre-conversion C min . However, the C min of TAC-OD was found to be similar to the pre-conversion C min compared during the follow-up period. Renal function was found to be stable in all patients over 2 months. Conclusion Early conversion therapy was associated with a significantly lower immediate post-conversion C min but comparable C min throughout the follow-up period. The “one to one conversion ratio” from TAC-BID to TAC-OD could be performed among Asian de novo kidney transplant recipients at an early period after transplantation.
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关键词
Early conversion,Formulation,Kidney transplant,Tacrolimus,Trough level
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