alexa SLCO1B1 (OATP1B1, an uptake transporter) and ABCG2 (BCRP, an efflux transporter) variant alleles and pharmacokinetics of pitavastatin in healthy volunteers.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Pharmacogenomics & Pharmacoproteomics

Author(s): Ieiri I, Suwannakul S, Maeda K, Uchimaru H, Hashimoto K,

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Abstract To investigate the contribution of genetic polymorphisms of SLCO1B1 and ABCG2 to the pharmacokinetics of a dual substrate, pitavastatin, 2 mg of pitavastatin was administered to 38 healthy volunteers and pharmacokinetic parameters were compared among the following groups: 421C/C(*)1b/(*)1b (group 1), 421C/C(*)1b/(*)15 (group 2), 421C/C(*)15/(*)15 and 421C/A(*)15/(*)15 (group 3), 421C/A(*)1b/(*)1b (group 4), 421A/A(*)1b/(*)1b (group 5), and 421C/A(*)1b/(*)15 (group 6). In SLCO1B1, pitavastatin area under plasma concentration-time curve from 0 to 24 h (AUC(0-24)) for groups 1, 2, and 3 was 81.1+/-18.1, 144+/-32, and 250+/-57 ng h/ml, respectively, with significant differences among all three groups. In contrast to SLCO1B1, AUC(0-24) in groups 1, 4, and 5 was 81.1+/-18.1, 96.7+/-35.4, and 78.2+/-8.2 ng h/ml, respectively. Although the SLCO1B1 polymorphism was found to have a significant effect on the pharmacokinetics of pitavastatin, a nonsynonymous ABCG2 variant, 421C>A, did not appear to be associated with the altered pharmacokinetics of pitavastatin. This article was published in Clin Pharmacol Ther and referenced in Journal of Pharmacogenomics & Pharmacoproteomics

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