AzTrials
AzTrials

Hepatitis CPhase 2NCT00704184

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

A Phase 2 study testing Comparator: Vaniprevir, Comparator: Pegylated-Interferon (Peg-IFN) and Comparator: Ribavirin in people with Hepatitis C, run by Merck Sharp & Dohme LLC.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

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. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Hepatitis C
What is being tested?
Comparator: Vaniprevir, Comparator: Pegylated-Interferon (Peg-IFN) and Comparator: Ribavirin
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
95 participants
Where
No sites listed yet
Study dates
25 Jul 2008to 14 Apr 2010
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient has chronic Genotype 1 Hepatitis C infection

Who cannot join

  • 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

About this study

Official title: 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.

Conditions
Hepatitis C
Being tested
Comparator: Vaniprevir, Comparator: Pegylated-Interferon (Peg-IFN), Comparator: Ribavirin, Comparator: placebo
Medical subject headings
Hepatitis C

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Comparator: VaniprevirDrug

    Also called MK-7009

    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

  • Comparator: Pegylated-Interferon (Peg-IFN)Drug

    Peg-IFN 180 mcg once-weekly subcutaneous injection; duration of treatment: 48 weeks

  • Comparator: RibavirinDrug

    Ribavirin 200 mg tablet b.i.d. (dose based on body weight); duration of treatment: 48 weeks

  • Comparator: placeboDrug

    Matching placebo to vaniprevir; duration of treatment: 28 days

Study groups in NCT00704184
Study groupRoleWhat they receive
Placebo + Peg-IFN/RibavirinPlacebo comparatorParticipants 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.
Receives: Drug: Comparator: Pegylated-Interferon (Peg-IFN); Drug: Comparator: Ribavirin
Vaniprevir 300 mg b.i.d. + Peg-IFN/RibavirinExperimentalParticipants 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.
Receives: Drug: Comparator: Vaniprevir; Drug: Comparator: Pegylated-Interferon (Peg-IFN); Drug: Comparator: Ribavirin
Vaniprevir 600 mg b.i.d. + Peg-IFN/RibavirinExperimentalParticipants 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.
Receives: Drug: Comparator: Vaniprevir; Drug: Comparator: Pegylated-Interferon (Peg-IFN); Drug: Comparator: Ribavirin
Vaniprevir 600 mg q.d. + Peg-IFN/RibavirinExperimentalParticipants 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.
Receives: Drug: Comparator: Vaniprevir; Drug: Comparator: Pegylated-Interferon (Peg-IFN); Drug: Comparator: Ribavirin
Vaniprevir 800 mg q.d. + Peg-IFN/RibavirinExperimentalParticipants 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.
Receives: Drug: Comparator: Vaniprevir; Drug: Comparator: Pegylated-Interferon (Peg-IFN); Drug: Comparator: Ribavirin; Drug: Comparator: placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants Achieving RVR

    Rapid Viral Response (RVR) was declared if Hepatitis C Virus (HCV) ribonucleic acid (RNA) was undetectable at Week 4.

    Measured: Week 4

  2. Number of Participants Experiencing an Adverse Event (AE)

    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.

    Measured: Up to Day 42

  3. Number of Participants Discontinuing From Study Therapy Due to AEs

    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.

    Measured: Day 1 to Day 28

Secondary outcomes (3)
  1. Number of Participants With ≥2-log10 Decrease in HCV RNA

    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.

    Measured: Baseline and Week 4

  2. Number of Participants With ≥3-log10 Decrease in HCV RNA

    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.

    Measured: Baseline and Week 4

  3. Mean Log Change From Baseline in HCV RNA

    The mean changes from baseline in log10 HCV RNA in each vaniprevir group was compared against control treatment at Week 4.

    Measured: Baseline and Week 4

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Jun 2008 (estimated)
  2. Study start25 Jul 2008
  3. Primary completion12 Dec 2008
  4. Study completion14 Apr 2010

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
95 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00704184
Sponsor's protocol ID
7009-007
Other IDs
MK7009-007, 2007_658
Status last verified
Sep 2018
First submitted
23 Jun 2008
Last updated
9 Oct 2018
Data monitoring committee
Yes
Individual data sharing
Yes: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Publications

  • Manns MP, Gane E, Rodriguez-Torres M, Stoehr A, Yeh CT, Marcellin P, Wiedmann RT, Hwang PM, Caro L, Barnard RJ, Lee AW; MK-7009 Protocol 007 Study Group. Vaniprevir with pegylated interferon alpha-2a and ribavirin in treatment-naive patients with chronic hepatitis C: a randomized phase II study. Hepatology. 2012 Sep;56(3):884-93. doi: 10.1002/hep.25743. Epub 2012 Jul 17.

    PubMed 22473713
  • Lawitz E, Sulkowski M, Jacobson I, Kraft WK, Maliakkal B, Al-Ibrahim M, Gordon SC, Kwo P, Rockstroh JK, Panorchan P, Miller M, Caro L, Barnard R, Hwang PM, Gress J, Quirk E, Mobashery N. Characterization of vaniprevir, a hepatitis C virus NS3/4A protease inhibitor, in patients with HCV genotype 1 infection: safety, antiviral activity, resistance, and pharmacokinetics. Antiviral Res. 2013 Sep;99(3):214-20. doi: 10.1016/j.antiviral.2013.05.015. Epub 2013 Jun 7.

    PubMed 23747481

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Comparator: Vaniprevir, Comparator: Pegylated-Interferon (Peg-IFN) and Comparator: Ribavirin in people with Hepatitis C, run by Merck Sharp & Dohme LLC.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 Oct 2018. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 1 Oct 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants Achieving RVR (time frame: Week 4). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00704184, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Oct 2018.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in