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The purpose of this study is to investigate the effect of steady-state concentrations of TMC435 150mg q.d. (once a day) on the steady-state pharmacokinetics of escitalopram 10 mg q.d., and vice versa. Steady state is a term which means that the drug has been given long enough so that the plasma concentrations will remain the same with each subsequent dose. TMC435 is being investigated for the treatment of chronic hepatitis C virus (HCV) infection. Pharmacokinetics (pk) means how the drug is absorbed into the bloodstream, distributed in the body and eliminated from the body.
TMC435 is being investigated for treatment of chronic HCV infection, in combination with Peg-IFN (pegylated interferon) and RBV (ribavirin). Peg-IFN plus RBV are currently an accepted methods for treating HCV. Treatment with Peg-IFN plus RBV for HCV infection is associated with a high rate of depression. The results of this study will provide dosing recommendations for coadministration of TMC435 and escitalopram in HCV-infected patients. This is a Phase I, open-label (both participant and investigator know the name of the medication) , randomized (study medication assigned by chance), crossover trial in 18 healthy participants to investigate the pharmacokinetic interaction between escitalopram and TMC435, both at steady state. Steady state is a term which means that the drug has been given long enough so that the plasma concentrations will remain the same with each subsequent dose. The participants will receive three treatments (treatment A-B-C) in a randomized order. In Treatment A, participants will receive TMC435 150 mg q.d. In Treatment B, participants will receive escitalopram 10 mg q.d. In treatment C, participants will receive escitalopram 10 mg q.d. and TMC435 150 mg q.d. All treatments will be administered for 7 days and with food. There will be a washout period (a period where no treatment will be taken in view of having all the medication eliminated from the body before starting a new treatment) of at least 10 days between last intake of study medication in one session and first intake of study medication in the subsequent session. Pharmacokinetic profiles of the two compounds will be measured through blood samples taken at regular intervals during the study and safety and tolerability will be assessed during the study period and in follow-up. Safety and tolerability evaluations will be recorded at regular intervals throughout the trial period. Blood and urine samples, electrocardiogram (ECG) and vital signs (blood pressure and heart rate) will be taken at screening, before medication intake on days 1 and 7 and on Day 8 in each session and at the 2 follow up visits at 1 week and 4-5 weeks after last dose of drug in the last session. A physical examination will be performed at screening, on day -1 (= day before day of first medication intake in each session) and during the 2 follow up visits. On the morning before first medication intake (in the first session only) a blood sample will be taken to examine your CYP2C19 genes, which are responsible for the production of enzymes that determine the breakdown of drugs in your body. The results of this study will provide dosing recommendations for coadministration of TMC435 and escitalopram in HCV-infected patients. Participants will receive in treatment A TMC435 150 mg q.d., in treatment B participants will receive escitalopram 10 mg and in treatment C participants will receive escitalopram 10 mg q.d. + TMC435 150 mg q.d. All treatments will be administered for 7 days and with food.
Allocation: Randomized, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Treatment
Hepatitis C Virus
TMC435, Escitalopram, TMC435 + Escitalopram
Tibotec Pharmaceuticals, Ireland
Published on BioPortfolio: 2014-08-27T03:15:04-0400
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A family of hepatotropic DNA viruses which contains double-stranded DNA genomes and causes hepatitis in humans and animals. There are two genera: AVIHEPADNAVIRUS and ORTHOHEPADNAVIRUS. Hepadnaviruses include HEPATITIS B VIRUS, duck hepatitis B virus (HEPATITIS B VIRUS, DUCK), heron hepatitis B virus, ground squirrel hepatitis virus, and woodchuck hepatitis B virus (HEPATITIS B VIRUS, WOODCHUCK).
A species in the genus HEPATOVIRUS containing one serotype and two strains: HUMAN HEPATITIS A VIRUS and Simian hepatitis A virus causing hepatitis in humans (HEPATITIS A) and primates, respectively.
INFLAMMATION of the LIVER in humans caused by HEPATITIS DELTA VIRUS, a defective RNA virus that can only infect HEPATITIS B patients. For its viral coating, hepatitis delta virus requires the HEPATITIS B SURFACE ANTIGENS produced by these patients. Hepatitis D can occur either concomitantly with (coinfection) or subsequent to (superinfection) hepatitis B infection. Similar to hepatitis B, it is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.
A strain of HEPATITIS A VIRUS which causes hepatitis in humans. The virus replicates in hepatocytes and is presumed to reach the intestine via the bile duct. Transmission occurs by the fecal-oral route.
INFLAMMATION of the LIVER in humans caused by HEPATITIS C VIRUS, a single-stranded RNA virus. Its incubation period is 30-90 days. Hepatitis C is transmitted primarily by contaminated blood parenterally, and is often associated with transfusion and intravenous drug abuse. However, in a significant number of cases, the source of hepatitis C infection is unknown.
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