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• W2802574198 abstract "Pharmacokinetic characteristics of telaprevir in healthy Korean male subjects and comparisons with Japanese Yewon Choi,1 Seonghae Yoon,1 Kyoko Matsumoto,2 Yoshiyasu Ohta,3 SeungHwan Lee,1 Kyung-Sang Yu,1 In-Jin Jang1 1Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea; 2Ikuyaku Integrated Value Development Division, Mitsubishi Tanabe Pharma Corporation, Osaka, Japan; 3Sohyaku Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Tokyo, Japan Introduction: Telaprevir, a reversible selective inhibitor of viral protease and a potential blocker of viral replication, is indicated for the treatment of hepatitis C virus genotype 1 infection. In this study, the pharmacokinetic profile, safety, and tolerability of telaprevir and the effect of food on telaprevir exposure were evaluated in healthy Korean subjects, and compared with data from a previous study in Japanese male subjects. Methods: The single ascending dose study was conducted in 3 dose-based groups (500, 750, and 1,250 mg, six subjects each) in a fasted state. In the multiple dose study, eight subjects in the fed state received 750 mg of telaprevir once on Day 1 and every 8 hours from Day 2 until the morning of Day 6. Serial blood samples for pharmacokinetic analysis were collected for up to 24 hours in the single ascending dose study and for 6 days in the multiple dose study. Individual pharmacokinetic parameters were calculated using a non-compartmental analysis method. Safety and tolerability profiles were evaluated throughout the study. Results: Following multiple administrations of telaprevir, maximum plasma concentrations (Cmax), area under the concentration–time curve (AUC0–8), and Ctrough (concentration at 8 h after drug administration) increased by ~2.41-fold. Compared to fasted state values, mean Cmax and AUC0–24 increased by 4.92- and 4.81-fold, respectively, after food intake. The Cmax and AUCinf of Korean subjects were 26%–34% higher than those of Japanese subjects; however, these differences were not clinically significant. All observed adverse events were mild and there was no discontinuation due to AEs. Conclusion: In conclusion, the telaprevir’s pharmacokinetic characteristics were similar in Korean and Japanese subjects. Telaprevir was well tolerated in a single dose of up to 1,250 mg and in multiple doses of 750 mg. Keywords: antiviral agents, hepatitis C virus, NS3/4A protease, ethnicity, pharmacokinetic profile" @default.
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• W2802574198 date "2018-04-01" @default.
• W2802574198 modified "2023-09-25" @default.
• W2802574198 title "Pharmacokinetic characteristics of telaprevir in healthy Korean male subjects and comparisons with Japanese" @default.
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• W2802574198 doi "https://doi.org/10.2147/dddt.s148117" @default.
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