We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov Menu

An Observational Study on The Prediction of Adverse Events in Patients With Chronic Hepatitis C Receiving a Long-Acting Interferon Plus Ribavirin (GUARD-C)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: April 29, 2011
Last Update Posted: November 2, 2016
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.
Information provided by (Responsible Party):
Hoffmann-La Roche
This observational study will assess factors leading to dose reductions/treatment discontinuations and the effect on sustained virological response in patients with chronic hepatitis C receiving a long-acting interferon (e.g. Pegasys/peginterferon alfa-2a) and ribavirin. Data will be collected from each patient for the duration of their treatment and for up to 6 months thereafter.

Hepatitis C, Chronic

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Global Observational Cohort Study on the Prediction of Unwanted Adverse Effects in Individuals Infected With Chronic Hepatitis C Receiving a Long Acting Interferon Plus Ribavirin

Resource links provided by NLM:

Further study details as provided by Hoffmann-La Roche:

Primary Outcome Measures:
  • Correlation between baseline patient characteristics and safety related dose reductions/treatment discontinuations of the long-acting interferon or ribavirin [ Time Frame: 4 years ]
  • Correlation between safety related dose reductions/treatment discontinuations and sustained virological response (SVR: defined as HCV RNA <50 IU/mL at 24 weeks after completion of treatment) [ Time Frame: 4 years ]

Secondary Outcome Measures:
  • Correlation of on-treatment factors and dose reduction/treatment discontinuation [ Time Frame: 4 years ]
  • Correlation between degree of dose reductions/treatment interruptions (percentage of actual exposure/treatment administrations in relation to target exposure) and SVR [ Time Frame: 4 years ]
  • Comparison of on-treatment virological response (rapid virological response, early virological response) in treatment-naïve and treatment experienced patients [ Time Frame: 4 years ]
  • Safety: Incidence of adverse events [ Time Frame: 4 years ]

Enrollment: 4459
Study Start Date: October 2009
Study Completion Date: June 2013
Primary Completion Date: June 2013 (Final data collection date for primary outcome measure)


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Patients with chronic hepatitis C receiving a long-acting interferon plus ribavirin

Inclusion Criteria:

  • Adult patients (according to local legislation)
  • Chronic hepatitis C
  • Treatment with long-acting interferon plus ribavirin
  • Quantifiable HCV RNA before initiation of treatment
  • No contra-indications to long-acting interferon and ribavirin therapy as detailed in the label

Exclusion Criteria:

  • End stage renal disease
  • Major organ transplantation
  • Concomitant therapy with telbivudine
  • Pregnant or breast-feeding females
  • Male partners of pregnant females
  Contacts and Locations
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 ClinicalTrials.gov identifier (NCT number): NCT01344889

  Show 261 Study Locations
Sponsors and Collaborators
Hoffmann-La Roche
Study Director: Clinical Trials Hoffmann-La Roche
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Hoffmann-La Roche
ClinicalTrials.gov Identifier: NCT01344889     History of Changes
Other Study ID Numbers: MV22255
First Submitted: April 27, 2011
First Posted: April 29, 2011
Last Update Posted: November 2, 2016
Last Verified: November 2016

Additional relevant MeSH terms:
Hepatitis A
Hepatitis C
Hepatitis, Chronic
Hepatitis C, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Antineoplastic Agents
Antiviral Agents
Anti-Infective Agents
Molecular Mechanisms of Pharmacological Action