PMID- 24148552 OWN - NLM STAT- MEDLINE DCOM- 20140715 LR - 20221207 IS - 1879-114X (Electronic) IS - 0149-2918 (Linking) VI - 35 IP - 12 DP - 2013 Dec TI - Pharmacokinetics and tolerability of Tenofovir disoproxil fumarate 300 mg once daily: an open-label, single- and multiple-dose study in healthy Chinese subjects. PG - 1884-9 LID - S0149-2918(13)00971-5 [pii] LID - 10.1016/j.clinthera.2013.09.020 [doi] AB - BACKGROUND: Tenofovir disoproxil fumarate (TDF) has been approved worldwide for the treatment of adults with chronic hepatitis B and, in combination with other antiretroviral agents, HIV-1 infection. Although its use for the treatment of HIV has been approved by the Chinese State Food and Drug Administration, there are no data on the pharmacokinetic profile of TDF in Chinese individuals. OBJECTIVES: This study aimed to investigate the pharmacokinetic properties and tolerability of TDF in healthy Chinese subjects. METHODS: This open-label, single- and multiple-dose study was conducted in healthy Chinese volunteers. Subjects received TDF 300 mg once daily, administered as a single dose (day 1) and multiple doses (days 4-10). Multiple plasma samples were collected over time, and the concentrations of TDF were determined using LC-MS/MS. Pharmacokinetic parameters were estimated using a noncompartmental model. Tolerability was determined using clinical evaluation and monitoring of adverse events (AEs). RESULTS: Fourteen volunteers were enrolled (7 men, 7 women; mean age, 24.6 years). TDF was rapidly absorbed; median Tmax was 0.75 hour, and t(1/2) was ~21 hours with single dosing. The mean ratio of AUC0-tau steady state/AUC0-24 single dose was 1.55. The pharmacokinetic properties of TDF were consistent between the single dose and multiple doses, and between men and women. No serious AEs were reported, and there were no discontinuations due to AEs. CONCLUSIONS: There was an accumulation of approximately 55% in tenofovir exposure in healthy Chinese between multiple dose and single dose. TDF exhibited a pharmacokinetic profile similar to that of healthy Western subjects in a historical comparison. TDF was generally well tolerated in these healthy Chinese subjects. ClinicalTrials.gov identifier: NCT01480622. CI - Crown Copyright (c) 2013 Published by Elsevier HS Journals, Inc. All rights reserved. FAU - Hu, Chao-Ying AU - Hu CY AD - Department of Clinical Pharmacology, Zhong Shan Hospital, Fudan University, Shanghai, China; Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Liu, Yan-Mei AU - Liu YM AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Liu, Yun AU - Liu Y AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Chen, Qian AU - Chen Q AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Wang, Wei AU - Wang W AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Wu, Kai AU - Wu K AD - Clinical Development, GlaxoSmithKline R&D China, Shanghai, China. FAU - Dong, Jie AU - Dong J AD - Clinical Development, GlaxoSmithKline R&D China, Shanghai, China. FAU - Li, Jie AU - Li J AD - Clinical Development, GlaxoSmithKline R&D China, Shanghai, China. FAU - Jia, Jing-Ying AU - Jia JY AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Lu, Chuan AU - Lu C AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Sun, Shi-Xuan AU - Sun SX AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Yu, Chen AU - Yu C AD - Phase I Clinical Research Unit, Shanghai Xuhui Central Hospital, Shanghai, China. FAU - Li, Xuening AU - Li X AD - Department of Clinical Pharmacology, Zhong Shan Hospital, Fudan University, Shanghai, China. Electronic address: clab001@126.com. LA - eng SI - ClinicalTrials.gov/NCT01480622 PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131019 PL - United States TA - Clin Ther JT - Clinical therapeutics JID - 7706726 RN - 0 (Anti-Retroviral Agents) RN - 0 (Organophosphonates) RN - 99YXE507IL (Tenofovir) RN - JAC85A2161 (Adenine) SB - IM MH - Adenine/administration & dosage/adverse effects/*analogs & derivatives/pharmacokinetics MH - Administration, Oral MH - Adult MH - Anti-Retroviral Agents/*pharmacokinetics/*therapeutic use MH - Asian People MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Female MH - Humans MH - Male MH - Middle Aged MH - Organophosphonates/*administration & dosage/adverse effects/*pharmacokinetics MH - Tenofovir MH - Young Adult OTO - NOTNLM OT - LC-MS/MS OT - pharmacokinetics OT - tenofovir disoproxil fumarate OT - tolerability EDAT- 2013/10/24 06:00 MHDA- 2014/07/16 06:00 CRDT- 2013/10/24 06:00 PHST- 2013/03/25 00:00 [received] PHST- 2013/09/09 00:00 [revised] PHST- 2013/09/24 00:00 [accepted] PHST- 2013/10/24 06:00 [entrez] PHST- 2013/10/24 06:00 [pubmed] PHST- 2014/07/16 06:00 [medline] AID - S0149-2918(13)00971-5 [pii] AID - 10.1016/j.clinthera.2013.09.020 [doi] PST - ppublish SO - Clin Ther. 2013 Dec;35(12):1884-9. doi: 10.1016/j.clinthera.2013.09.020. Epub 2013 Oct 19.