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Study of the Pharmacokinetic Action of Amantadine and Ribavirin in Chronic Hepatitis C. CINAM (CINAM)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00199719
Recruitment Status : Completed
First Posted : September 20, 2005
Last Update Posted : October 31, 2007
Hoffmann-La Roche
Information provided by:
University Hospital, Limoges

Brief Summary:

Peg interferon and ribavirin currently represent the standard approved association for treating patients infected with hepatitis C virus (HCV) . The adjunction of amantadine is expected to gain about 10 % of sustained virological response (SVR) . Unfortunately, about 50 % of the patients remain relapsers or virological non responders. The main predictive factors of SVR are HCV genotype and body weight (BW). The impact of the drug pharmacological properties, particularly those of ribavirin requires complementary studies. This drug has a large distribution volume and its concentrations display large inter-individual variability. Two studies performed in HCV patients found no correlation between ribavirin dose adjusted on BW and a single ribavirin time point serum concentration at steady state.

The aim of this study is to investigate the pharmacokinetic-pharmacodynamic relationships of ribavirin in hepatitis C patient

Condition or disease Intervention/treatment Phase
Chronic Hepatitis C Drug: Ribavirine Phase 2

Detailed Description:

The study is conducted in naive patients infected with genotype non 2 non 3 administered peginterferon alpha 2-a (40KD) weekly, and ribavirin with dose adjusted on BW (< 75 kg 1000 mg/day, >75 kg 1200 mg/day) for the first three months with adjunction of amantadine 200 mg daily for the following 9 months.

Plasma concentration profiles of ribavirin were studied after the first dose (D0) and at W12. At each period, blood samples were collected pre-dose and 30 minutes, 1, 1.5, 2, 3, 4, 6, 8, and 10 hours post-dosing. Ribavirin concentrations were measured using liquid chromatography-tandem mass spectrometry and ribavirin area under the concentration-timcurves (AUC0-10h) were derived from plasma concentrations profiles using the linear trapezoidal rule.

Virological follow-up was performed at W2, W4, W6, W8, W12, W24 and W72. Early virological response was defined by undetectable viral load at W12.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 30 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Study of the Pharmacokinetic Action of Amantadine and Ribavirin in Chronic Hepatitis C Non 2 -3 Genotype naïve Patients Treated With a 12 Weeks Bitherapy of Peginterferon Alpha 2a-Ribavirin, and Followed by a Tritherapy of Peginterferon Alpha 2a-Ribavirin-Amantadine for 36 Weeks
Study Start Date : June 2003
Actual Study Completion Date : September 2006

Resource links provided by the National Library of Medicine

Drug Information available for: Ribavirin

Primary Outcome Measures :
  1. -Study of the complete pharmacokinetics of ribavirin at day 1, and day 84 (week 12).
  2. -Study of the complete pharmacokinetics of amantadin and ribavirin at week 12 + one day and at week 24

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male and female patients >18 years of age and <65 years of age
  • Génotype non2 non3
  • Chronic liver disease consistent with chronic hepatitis C infection on a biopsy (obtained within the past 24 months) as judged by a local pathologist (Metavir >A1and >F1)
  • Negative urine or blood pregnancy test (for women of childbearing potential) documented within the 24-hour period prior to the first dose of study drug

Exclusion Criteria:

  • Women with ongoing pregnancy or breast feeding
  • IFN or ribavirin therapy at any previous time
  • Positive test at screening for anti-HAV IgM Ab, HBsAg, anti-HBc IgM Ab, anti-HIV Ab
  • History or other evidence of a medical condition associated with chronic liver disease other than HCV (e.g., hemochromatosis, autoimmune hepatitis, metabolic liver disease, alcoholic liver disease, toxin exposures)
  • Serum creatinine level >1.5 times the upper limit of normal at screening
  • History of severe psychiatric disease, especially depression

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00199719

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Service d'Hépato-gastroentérologie
Angers, France
Service d'Hépatogastroentérologie
Limoges, France
Sponsors and Collaborators
University Hospital, Limoges
Hoffmann-La Roche
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Principal Investigator: Véronique LOUSTAUD-RATTI, MD University Hospital, Limoges
Layout table for additonal information Identifier: NCT00199719    
Other Study ID Numbers: I02022
First Posted: September 20, 2005    Key Record Dates
Last Update Posted: October 31, 2007
Last Verified: June 2007
Keywords provided by University Hospital, Limoges:
drug monitoring
chronic hepatitis C
non 2 non 3 genotype
Additional relevant MeSH terms:
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Hepatitis A
Hepatitis C
Hepatitis C, Chronic
Hepatitis, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Molecular Mechanisms of Pharmacological Action
Antiviral Agents
Anti-Infective Agents