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©The Author(s) 2020.
World J Transplant. May 29, 2020; 10(5): 90-103
Published online May 29, 2020. doi: 10.5500/wjt.v10.i5.90
Table 3 Dosing recommendation for tacrolimus based on CYP3A5 phenotype[12]
CYP3A5 phenotypeImplications for tacrolimus pharmacologic measuresTherapeutic recommendationsClassification of recommendation
Extensive metabolizer (CYP3A5 expresser)Lower dose-adjusted trough concentrations of TAC and decreased chance of achieving target TAC concentrationsIncrease starting dose to 1.5-2 times recommended starting dose. Use therapeutic drug monitoring to guide dose adjustmentsStrong
Intermediate metabolizer (CYP3A5 expresser)Lower dose-adjusted trough concentrations of TAC and decreased chance of achieving target TAC concentrationsIncrease starting dose to 1.5-2 times recommended starting dose. Use therapeutic drug monitoring to guide dose adjustmentsStrong
Poor metabolizer (CYP3A5 non expresser)Higher dose-adjusted trough concentrations of TAC and increased chance of achieving target TAC concentrationsInitiate therapy with standard recommended dose. Use therapeutic drug monitoring to guide dose adjustmentsStrong


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