Safety and Efficacy of Vaniprevir (MK7009) Administered With Pegylated-Interferon and Ribavirin (MK-7009-007)

September 10, 2018 updated by: Merck Sharp & Dohme LLC

A Phase II, Randomized, Placebo-Controlled Study to Evaluate the Safety and Efficacy of MK7009 Administered Concomitantly With Pegylated-Interferon and Ribavirin for 28 Days in Treatment-Naive Patients With Chronic Hepatitis C Infection

A study to evaluate how effective different levels of Vaniprevir (MK-7009), when administered with Pegylated-Interferon (Peg-IFN) and Ribavirin, are at achieving rapid viral response (RVR) i.e., undetectable hepatitis C virus [HCV] viral ribonucleic acid [RNA] at Week 4 in participants with chronic HCV infection. The primary hypothesis was that the proportion of participants in one or more of the Vaniprevir treatment groups achieving RVR would be greater than the proportion of placebo participants achieving RVR when Vaniprevir and placebo were co-administered with Peg-IFN/Ribavirin.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

95

Phase

  • Phase 2

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

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patient has chronic Genotype 1 Hepatitis C infection

Exclusion Criteria:

  • Subject has been previously treated for HCV
  • Has Human Immunodeficiency Virus (HIV)
  • Has Hepatitis B
  • Has a history of clinically significant medical condition that may interfere with the study (e.g., stroke or chronic seizures or major neurological disorder) or is contraindicated for treatment with peg-IFN and Ribavirin

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo + Peg-IFN/Ribavirin
Participants took double-blind Placebo + Peg-IFN/Ribavirin from Week 1 to Week 4, followed by open-label Peg-IFN/Ribavirin from Week 5 to Week 48.
Drug: Comparator: Pegylated-Interferon (Peg-IFN)
Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks
Drug: Comparator: Ribavirin
Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks
Experimental: Vaniprevir 300 mg b.i.d. + Peg-IFN/Ribavirin
Participants took double-blind Vaniprevir 300 mg twice daily (b.i.d.) + Peg-IFN/Ribavirin from Week 1 to Week 4, followed by open-label Peg-IFN/Ribavirin from Week 5 to Week 48.
Drug: Comparator: Pegylated-Interferon (Peg-IFN)
Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks
Drug: Comparator: Ribavirin
Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks
Drug: Comparator: Vaniprevir
Vaniprevir 300 mg b.i.d., 600 mg b.i.d., 600 mg q.d., or 800 mg q.d.; duration of treatment: 28 days
Other Names:
  • MK-7009
Experimental: Vaniprevir 600 mg b.i.d. + Peg-IFN/Ribavirin
Participants took double-blind Vaniprevir 600 mg b.i.d. + Peg-IFN/Ribavirin from Week 1 to Week 4, followed by open-label Peg-IFN/Ribavirin from Week 5 to Week 48.
Drug: Comparator: Pegylated-Interferon (Peg-IFN)
Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks
Drug: Comparator: Ribavirin
Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks
Drug: Comparator: Vaniprevir
Vaniprevir 300 mg b.i.d., 600 mg b.i.d., 600 mg q.d., or 800 mg q.d.; duration of treatment: 28 days
Other Names:
  • MK-7009
Experimental: Vaniprevir 600 mg q.d. + Peg-IFN/Ribavirin
Participants took double-blind Vaniprevir 600 mg q.d. + Peg-IFN/Ribavirin from Week 1 to Week 4, followed by open-label Peg-IFN/Ribavirin from Week 5 to Week 48.
Drug: Comparator: Pegylated-Interferon (Peg-IFN)
Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks
Drug: Comparator: Ribavirin
Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks
Drug: Comparator: Vaniprevir
Vaniprevir 300 mg b.i.d., 600 mg b.i.d., 600 mg q.d., or 800 mg q.d.; duration of treatment: 28 days
Other Names:
  • MK-7009
Experimental: Vaniprevir 800 mg q.d. + Peg-IFN/Ribavirin
Participants took double-blind Vaniprevir 800 mg q.d. + Peg-IFN/Ribavirin from Week 1 to Week 4, followed by open-label Peg-IFN/Ribavirin from Week 5 to Week 48.
Drug: Comparator: Pegylated-Interferon (Peg-IFN)
Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks
Drug: Comparator: Ribavirin
Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks
Drug: Comparator: Vaniprevir
Vaniprevir 300 mg b.i.d., 600 mg b.i.d., 600 mg q.d., or 800 mg q.d.; duration of treatment: 28 days
Other Names:
  • MK-7009
Drug: Comparator: placebo
Matching placebo to vaniprevir; duration of treatment: 28 days

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Participants Achieving RVR
Time Frame: Week 4
Rapid Viral Response (RVR) was declared if Hepatitis C Virus (HCV) ribonucleic acid (RNA) was undetectable at Week 4.
Week 4
Number of Participants Experiencing an Adverse Event (AE)
Time Frame: Up to Day 42
The number of participants experiencing AEs in each treatment group was monitored during the Vaniprevir/Placebo treatment (Day 1 to Day 28) and safety follow-up (Day 29 to Day 42) periods.
Up to Day 42
Number of Participants Discontinuing From Study Therapy Due to AEs
Time Frame: Day 1 to Day 28
An AE was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of study therapy, whether or not considered related to the use of the product.
Day 1 to Day 28

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants With ≥2-log10 Decrease in HCV RNA
Time Frame: Baseline and Week 4
The number of participants with at least a 2-log10 decrease from baseline in HCV RNA following 4 weeks of treatment with Placebo or Vaniprevir.
Baseline and Week 4
Number of Participants With ≥3-log10 Decrease in HCV RNA
Time Frame: Baseline and Week 4
The number of participants with at least a 3-log10 decrease from baseline in HCV RNA following 4 weeks of treatment with Placebo or Vaniprevir.
Baseline and Week 4
Mean Log Change From Baseline in HCV RNA
Time Frame: Baseline and Week 4
The mean changes from baseline in log10 HCV RNA in each vaniprevir group was compared against control treatment at Week 4.
Baseline and Week 4

Collaborators and Investigators

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

Sponsor

Merck Sharp & Dohme LLC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (Actual)

July 25, 2008

Primary Completion (Actual)

December 12, 2008

Study Completion (Actual)

April 14, 2010

Study Registration Dates

First Submitted

June 23, 2008

First Submitted That Met QC Criteria

June 23, 2008

First Posted (Estimate)

June 24, 2008

Study Record Updates

Last Update Posted (Actual)

October 9, 2018

Last Update Submitted That Met QC Criteria

September 10, 2018

Last Verified

September 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 7009-007
  • MK7009-007
  • 2007_658

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Study Data/Documents

  1. CSR Synopsis

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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