Efficacy of PegIntron (Peginterferon Alfa-2b) and Rebetol (Ribavirin) in Treatment-naïve Subjects With Chronic Hepatitis C in Clinical Practice in Greece (Study P05209)

October 16, 2015 updated by: Merck Sharp & Dohme LLC

A Greek Observational Study on Relapse Rate and Sustained Virological Response in Naive CHC Patients, Treated With Pegylated Interferon Alpha-2b and Ribavirin in Daily Clinical Practice

The objective of the study is to evaluate the rates of Hepatitis C virus (HCV) eradication and relapse in participants treated with PegIntron and Rebetol in clinical practice in Greece. Participants will not be treated as part of the study. Data on participants treated in accordance with approved labeling will be collected retrospectively from approximately 30 sites in Greece.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
332

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Treatment-naïve participants with chronic hepatitis C treated with PegIntron and Rebetol in accordance with approved labeling in clinical practice in Greece prior to enrollment in the current study. Data from patients treated at approximately 28 sites will be retrospectively analyzed.

Description

Inclusion Criteria:

  • Participants who have already begun Summary of Product Characteristics (SmPC)-based combination treatment with pegylated interferon alpha-2b and ribavirin, prior to the site initiation date.
  • Participants who have been receiving combination treatment with pegylated interferon alpha-2b and ribavirin for at least 6 months before enrollment.
  • Participants who have achieved negative HCV RNA at the end of treatment, defined according to genotype (24 weeks for HCV genotypes 2/3 and 48 weeks for genotypes 1/4).
  • Participants with diagnosed chronic hepatitis C (CHC) and HCV genotype 1, 2, 3 or 4.
  • Participants older than 18 years, regardless of gender or race.

Exclusion Criteria:

  • The participant has received treatment for CHC in the past (not treatment-naive).
  • The participant has received treatment in the context of a clinical trial in the participating site.
  • The participant has been diagnosed with a concomitant infection e.g. with hepatitis B or HIV
  • The participant has de-compensated liver disease or belongs to a special population, such as liver transplant, hemophilia, severe pre-existing psychiatric disorder, auto-immune disease, thalassaemia.
  • The participant has positive HCV RNA at the end of treatment.
  • Pregnant women or women intending to bear children or sexual partners of women wishing to bear children and for a 7-month period after the end of treatment, as indicated in the SmPC of Rebetol.
  • The participant is not eligible on grounds of contra-indications, special warnings, particular population and/or the section on pregnancy and lactation of the SmPC.
  • The participant has interrupted treatment for any reason.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Participants with Chronic Hepatitis C
Treatment-naïve participants with chronic hepatitis C, undergoing treatment with a standard treatment regimen of PegIntron and Rebetol in clinical practice at approximately 28 sites in Greece
Biological: PegIntron (peginterferon alfa-2b, pegylated interferon alfa-2b)
Prior to enrollment in the study, PegIntron was to be administered at a dose of 1.5 μg/kg/week subcutaneously in accordance with approved labeling. Therapy duration varied from 24 to 48 weeks depending on HCV viral load and genotype followed by a 24-week post-treatment follow-up.
Other Names:
  • SCH 54031
Drug: Rebetol (ribavirin)
Prior to enrollment in the study, Rebetol was to be administered at a dose of 800-1200 mg/day orally in accordance with approved labeling. Therapy duration varied from 24 to 48 weeks depending on HCV viral load and genotype followed by a 24-week post-treatment follow-up.
Other Names:
  • SCH 18908

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
Sustained virological response (SVR) was assessed at the 24-week post-treatment follow-up (Visit 2). SVR was defined as undetectable plasma Hepatitis C virus Ribonucleic acid (HCV-RNA) at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Demonstrated Virological Relapse as Assessed at 24-week Post-treatment Follow-up
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
Virological relapse was assessed at the 24-week post-treatment follow-up (Visit 2). Virological relapse was defined as undetectable plasma HCV-RNA at end of combination treatment (Visit 1- considered Week 24 or Week 48 after treatment start depending on treatment duration), but with positive HCV-RNA at the 24-week post treatment follow-up.
24 weeks following completion of 24 or 48 weeks of therapy

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on HCV Genotype at Baseline
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on HCV genotype (1, 2, 3, 4, or 2 & 3) at baseline. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on Liver Fibrosis Stage at Baseline
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on liver fibrosis stage, where biopsy was available, at baseline: absence, minimal, moderate, or significant as assessed by investigator. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on HCV-RNA Viral Load at Baseline
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on HCV-RNA viral load at baseline as assessed by investigator. Low viral load was defined as <400,000 International Units/milliliter (IU/mL) and high viral load was defined as >=400,000 IU/mL. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on Alanine Aminotransferase (ALT) Levels at Baseline
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on ALT levels at baseline as assessed by investigator. Normal baseline ALT level was defined as <40 IU/mL and elevated baseline ALT level was defined as >= 40 IU/mL. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on Study Treatment Dosage Modification
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on study treatment dosage modification: no dosage modification or any dosage modification of study treatment. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on Achievement of Rapid Virological Response
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed at the 24-week post-treatment follow-up (Visit 2) by subgroups based on achievement of rapid virological response (RVR) where data was available. RVR was defined as negative HCV-RNA after 4 (+/- 1) weeks of treatment. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment (24 or 48 weeks of treatment duration).
24 weeks following completion of 24 or 48 weeks of therapy
Number of Participants Who Achieved Sustained Virological Response as Assessed at 24-week Post-treatment Follow-up by Subgroups Based on Compliance With the 80/80/80 Rule
Time Frame: 24 weeks following completion of 24 or 48 weeks of therapy
SVR was assessed by subgroups based on compliance with the 80/80/80 rule where data was available. 80/80/80 compliant participants were those that received >= 80% of the planned total doses of both pegylated interferon alfa-2b & ribavirin for >=80% of the duration of therapy. 3 rates were to be computed: Compliance with study duration, compliance with pegylated interferon dose, & compliance with ribavirin dose. A participant was defined as compliant, if none of the 3 rates were < than 80%. SVR was defined as undetectable plasma HCV-RNA at 24 weeks after termination of combination treatment.
24 weeks following completion of 24 or 48 weeks of therapy

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Merck Sharp & Dohme LLC

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2007

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2010

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2010

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 25, 2008

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 25, 2008

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 29, 2008

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 19, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 16, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • P05209

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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