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Hepatitis C, ChronicPhase 3NCT01370642

Vaniprevir Administered With Pegylated-interferon and Ribavirin in Japanese Treatment-Naïve Chronic Hepatitis C Participants (MK-7009-043)

A Phase 3 study testing vaniprevir, Peg-IFN and ribavirin in people with Hepatitis C, Chronic, 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
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Trial summary

The purpose of this study is to evaluate the safety, tolerability, and efficacy of vaniprevir given in combination with pegylated interferon alfa-2b (peg-IFN) and ribavirin (RBV) versus treatment with peg-IFN and RBV alone in Japanese treatment-naïve participants with chronic hepatitis C (CHC) genotype (GT)1. Read more about this study

Who is it for?
Ages 20 to 70 years
Conditions the study is for
Hepatitis C, Chronic
What is being tested?
vaniprevir, Peg-IFN and ribavirin
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
294 participants
Where
No sites listed yet
Study dates
27 Jun 2011to 17 Mar 2014
Phase
Phase 3
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 20 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Japanese participant diagnosed with compensated CHC GT 1
  • Absence of ascites, bleeding esophageal varices, hepatic encephalopathy, or other signs or symptoms of advanced liver disease.
  • IFN treatment naive
  • No evidence of cirrhosis

Who cannot join

  • Co-infection with human immunodeficiency virus (HIV)
  • Positive hepatitis B surface antigen or other evidence of active hepatitis B infection
  • Any other condition that is contraindicated or for which caution is required for treatment with peg-IFN or RBV
  • Any condition or pre-study laboratory abnormality, or history of any illness, that, in the opinion of the investigator, might confound the results of the study or pose additional risk in administering the study drugs, peg-IFN and RBV, to the participant.

About this study

Official title: A Phase III Randomized, Placebo-controlled Study to Evaluate the Safety, Tolerability, and Efficacy of MK-7009 When Administered Concomitantly With Peginterferon Alfa-2b and Ribavirin in Japanese Treatment-Naïve Patients With Chronic Hepatitis C Infection

The purpose of this study is to evaluate the safety, tolerability, and efficacy of vaniprevir given in combination with pegylated interferon alfa-2b (peg-IFN) and ribavirin (RBV) versus treatment with peg-IFN and RBV alone in Japanese treatment-naïve participants with chronic hepatitis C (CHC) genotype (GT)1. The primary efficacy hypothesis is that the percentage of participants achieving sustained virologic response 24 weeks after completion of all study therapy (SVR24) in at least one of the vaniprevir arms is superior to the percentage of participants achieving SVR24 in the control arm.

Being tested
vaniprevir, Placebo to vaniprevir, Peg-IFN, ribavirin
Medical subject headings
Hepatitis C, Chronic

What participants receive

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

  • vaniprevirDrug

    Also called MK-7009

    Capsules containing 150 mg vaniprevir, orally, two in the morning and two in the evening for 12 or 24 weeks

  • Placebo to vaniprevirDrug

    Placebo to vaniprevir, capsules, orally, twice daily for 12 weeks or 24 weeks

  • Peg-IFNBiological

    Also called PegIntron

    Peg-IFN 1.5 μg/kg once per week, subcutaneously (SC) for 24 or 48 weeks

  • ribavirinDrug

    Also called REBETOL®

    Capsules containing 200 mg RBV orally, 3 to 5 capsules, dosage based on the participant's weight (600 mg/day to 1000 mg/day), for 24 or 48 weeks

Study groups in NCT01370642
Study groupRoleWhat they receive
Vaniprevir 12 Week ArmExperimentalParticipants on this arm receive 12 weeks of vaniprevir (300 mg twice daily) and then 12 weeks of placebo to vaniprevir along with 24 weeks of treatment with peg-IFN and RBV.
Receives: Drug: vaniprevir; Drug: Placebo to vaniprevir; Biological: Peg-IFN; Drug: ribavirin
Vaniprevir 24 Week ArmExperimentalParticipants on this arm receive 24 weeks of vaniprevir (300 mg twice daily) along with 24 weeks of treatment with peg-IFN and RBV.
Receives: Drug: vaniprevir; Biological: Peg-IFN; Drug: ribavirin
Control ArmActive comparatorParticipants on this arm receive 24 weeks of treatment with placebo to vaniprevir along with 48 weeks of treatment with peg-IFN and RBV.
Receives: Drug: Placebo to vaniprevir; Biological: Peg-IFN; Drug: ribavirin

What is being measured

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

  1. Percentage of Participants Achieving Sustained Virologic Response 24 Weeks After Completion of All Study Therapy (SVR24)

    SVR24 was defined as having an undetectable HCV RNA level 24 weeks after completion of all study therapy.

    Measured: 24 weeks after 24 or 48 weeks of study therapy (up to 72 weeks)

  2. Percentage of Participants With One or More Tier 1 Adverse Events (AEs) During the Study

    An adverse experience was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the product, was also an adverse experience. For this study, safety parameters or AEs of special interest that were identified a priori constituted "Tier 1" safety endpoints that were subject to inferential testing for statistical significance. Tier 1 AEs on this study included serious rash, anemia (anemia plus haemoglobin decreased), neutropenia (neutropenia plus neutrophil count decreased), bilirubin increased and gastrointestinal adverse (GI) experiences (vomiting, nausea, and diarrhea).

    Measured: From Day 1 (post-dose) through completion of Week 24 Follow-up (up to 72 weeks)

  3. Percentage of Participants Who Discontinued Study Drug Due to an AE

    An adverse experience was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the product, was also an adverse experience.

    Measured: From Day 1 (post-dose) through completion of Week 24 Follow-up (up to 72 weeks)

Secondary outcomes (5)
  1. Percentage of Participants Achieving SVR12

    SVR12 was defined as having an undetectable HCV RNA level 12 weeks after completion of all study therapy.

    Measured: 12 weeks after 24 or 48 weeks of study therapy (up to 60 weeks)

  2. Percentage of Participants Achieving Rapid Virologic Response (RVR)

    RVR was defined as having an undetectable HCV RNA level at Week 4.

    Measured: At Week 4

  3. Percentage of Participants Achieving Complete Early Virologic Response (cEVR)

    cEVR was defined as having an undetectable HCV RNA level at Week 12.

    Measured: At Week 12

  4. Percentage of Participants Achieving Undetectable HCV RNA at the End of Treatment (EOT)

    Participants were assessed for undetectable HCV RNA levels at the end of all study therapy.

    Measured: At Week 24 or 48

  5. Least Squares (LS) Mean Change From Baseline in HCV RNA (Log 10)

    HCV RNA levels were assessed at baseline (BL) and during treatment weeks 2, 4, 8, 12, and 24 using the Roche TaqMan HCV assay, and transformed to Log 10 values. HCV RNA values below the limit of reliable quantification (LoQ) or the limit of detection (LoD) at any time point were handled as follows (imputations done for computational purposes): values below the LoQ but above the LoD were imputed with the LoQ minus 0.1; values below the LoD were imputed with the value of 0 Log IU/mL. HCV RNA levels below the LoD were considered "undetectable".

    Measured: Baseline, Week 2, Week 4, Week 8, Week 12, Week 24

Timeline

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

  1. First posted10 Jun 2011 (estimated)
  2. Study start27 Jun 2011
  3. Primary completion31 Jul 2013
  4. Study completion17 Mar 2014

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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
294 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01370642
Sponsor's protocol ID
7009-043
Status last verified
Sep 2018
First submitted
8 Jun 2011
Last updated
18 Oct 2018
Data monitoring committee
Yes
Individual data sharing
Yes: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Publications

  • Hayashi N, Nakamuta M, Takehara T, Kumada H, Takase A, Howe AY, Ludmerer SW, Mobashery N. Vaniprevir plus peginterferon alfa-2b and ribavirin in treatment-naive Japanese patients with hepatitis C virus genotype 1 infection: a randomized phase III study. J Gastroenterol. 2016 Apr;51(4):390-403. doi: 10.1007/s00535-015-1120-x. Epub 2015 Sep 25.

    PubMed 26403160
  • Ludmerer SW, Hirano T, Black S, Howe AY, Chang W, Takase A, Nakamura K, Tanaka Y, Kumada H, Hayashi N, Nickle D. HCV evolutionary genetics of SVR versus virologic failure assessed from the vaniprevir phase III registration trials. Antiviral Res. 2016 Jun;130:118-29. doi: 10.1016/j.antiviral.2016.03.004. Epub 2016 Mar 3.

    PubMed 26947564

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing vaniprevir, Peg-IFN and ribavirin in people with Hepatitis C, Chronic, 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 4 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 18 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. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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 6 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 Sustained Virologic Response 24 Weeks After Completion of All Study Therapy (SVR24) (time frame: 24 weeks after 24 or 48 weeks of study therapy (up to 72 weeks)). 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 NCT01370642, 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 18 Oct 2018.

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