Intra-patient variability in tacrolimus exposure: Causes, consequences for clinical management

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Abstract

Tacrolimus (Tac) is widely used for the prevention of rejection after solid organ transplantation. Finding the optimal balance between effective Tac concentrations and toxicity is a challenge and requires therapeutic drug monitoring. In addition to the well-known inter-patient variability, the clinical use of Tac is also complicated by considerable intra-patient variability (IPV) in Tac exposure. Tac IPV is defined as the amount of fluctuation of whole-blood concentrations over a certain period of time during which the Tac dose remains unchanged. A high IPV in Tac exposure has recently been recognized as a strong risk factor for acute rejection and poor long-term kidney transplantation outcome. In addition to non-adherence, several other factors determine the magnitude of the IPV in Tac exposure. Quantification of IPV is easy and can be easily incorporated into everyday clinical practice as a tool for optimizing transplantation outcomes. (C) 2015 Elsevier Inc. All rights reserved.
Original languageUndefined/Unknown
Pages (from-to)78-84
Number of pages7
JournalTransplantation Reviews
Volume29
Issue number2
DOIs
Publication statusPublished - 2015

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