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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2011, Vol. 16 ›› Issue (6): 710-715.

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Pharmacogenomics and personalized medicine of tacrolimus

ZHU Lin1,2, HUA Zhi-hui1,2, SONG Hong-tao1   

  1. 1 Department of Pharmacy, Fuzhou General Hospital of Nanjing Military Region, Fuzhou 350025,Fujian,China;
    2 Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016,Liaoning,China
  • Received:2011-04-28 Revised:2011-05-31 Published:2011-07-25

Abstract: Tacrolimus (FK506), a widely used immunosuppressant, exerts a key effect in patients with organ transplantation. The drug requires therapeutic monitoring due to its narrow therapeutic index and great inter-individual variability. FK506 is known to be a substrate of CYP3A and P-glycoprotein (P-gp) . FK506 is metabolized by CYP3A and transported by P-gp. The difference in expression level and the bioactivity of these proteins may explain individual variations of FK506 pharmacokinetics.The differences in bioactivities of CYP3A and P-gp are believed to be due to CYP3A and MDR1 geneticmutation. Therefore, genetic variations of CYP3A and MDR1 may play an important role in the inter-individual variability of FK506. In this article, we reviewed the effect of CYP3A and MDR1 gene polymorphisms on pharmacokinetics of FK506 in patients with organ transplantation. This article presents an overview of the current research progress of pharmacogenomics of tacrolimus.

Key words: Tacrolimus, Gene polymorphism, CYP3A4, CYP3A5, MDR1

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