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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01710501
Other study ID # 5172-038
Secondary ID 2012-003333-42
Status Completed
Phase Phase 2
First received
Last updated
Start date December 7, 2012
Est. completion date January 29, 2014

Study information

Verified date January 2021
Source Merck Sharp & Dohme Corp.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a study designed to compare the safety and efficacy of 3 different doses of grazoprevir (MK-5172) combined with pegylated interferon alfa-2b (PEG-IFN) and ribavirin (RBV) in treatment-naïve participants with genotype 1 (GT1) chronic hepatitis C (CHC). Participants will receive 12 weeks of treatment with grazoprevir combined with Peg-IFN and RBV, and depending on response at Week 4 may go on to receive an additional 12 weeks of treatment with Peg-IFN and RBV.


Recruitment information / eligibility

Status Completed
Enrollment 87
Est. completion date January 29, 2014
Est. primary completion date November 25, 2013
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Treatment naive - Chronic, compensated HCV GT1 infection - Absence (no medical history or physical findings) of ascites, bleeding esophageal varices, hepatic encephalopathy, or other signs or symptoms of advanced liver disease, or cirrhosis - No evidence of cirrhosis or hepatocellular carcinoma by biopsy or noninvasive testing (e.g. FibroScan and/or FibroTest) - Must agree to use two acceptable methods of birth control from at least 2 weeks prior to first dose and continue until at least 6 months after last dose of study drug, or longer if dictated by local regulations Exclusion Criteria: - Non-GT1 HCV infection, including a mixed GT infection (with a non-GT1) or a non-typeable genotype. - Documented to be Human Immunodeficiency Virus (HIV) positive or co-infected with hepatitis B virus - Hepatocellular carcinoma (HCC) or under evaluation for HCC - Participating in or has participated in a study with an investigational compound or device within 30 days of signing informed consent - Diabetic and/or hypertensive with clinically significant ocular examination findings - Current or history of central nervous system trauma, seizure disorder, stroke or transient ischemic attack - Chronic pulmonary disease - Current or history of any clinically significant cardiac abnormalities/dysfunction - Active clinical gout within the last year - History of gastric surgery or history of malabsorption disorders - Active or suspected malignancy, or a history of malignancy, within the last 5 years (except adequately treated carcinoma in situ and basal cell carcinoma of the skin) - Pregnant, lactating, expecting to conceive or donate eggs, or male participant planning to impregnate or provide sperm donation or with a female partner who is pregnant - Current moderate or severe depression or history of depression associated with hospitalization, electroconvulsive therapy, or severe disruption of daily functions, or suicidal or homicidal ideation and/or attempt, or history of severe psychiatric disorders - Evidence or history of chronic hepatitis not caused by HCV

Study Design


Intervention

Drug:
Grazoprevir
Grazoprevir tablet, orally, once per day at assigned dose
Biological:
pegylated interferon alfa-2b
1.5 mcg/kg/week, administered as a weekly subcutaneous (SC) injection
Drug:
Ribavirin
Ribavirin capsule, orally, twice daily, at a dose of 800 to 1400 mg based on participant weight
Placebo
Placebo to match grazoprevir tablets to maintain dose blinding

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Merck Sharp & Dohme Corp.

References & Publications (1)

Lagging M, Brown A, Mantry PS, Ramji A, Weilert F, Vierling JM, Howe A, Gendrano IN 3rd, Hwang P, Zhang B, Wahl J, Robertson M, Mobashery N. Grazoprevir plus peginterferon and ribavirin in treatment-naive patients with hepatitis C virus genotype 1 infecti — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Percentage of Participants Achieving Sustained Virologic Response at 12 Weeks After the End of Treatment (SVR12) Hepatitis C virus ribonucleic acid (HCV RNA) was measured using the Roche COBAS™ Taqman™ HCV Test, v2.0® assay, which has a lower limit of quantification of 25 IU/mL and a limit of detection of 9.3 IU/mL. SVR12 was defined as HCV RNA <25 IU/mL (either target detected, unquantifiable or target not detected) 12 weeks after the end of all study therapy. 12 weeks after end of treatment (up to 36 weeks total)
Primary Number of Participants Experiencing at Least One Adverse Event (AE) During the Treatment Period and First 14 Follow-up Days An adverse event is defined as any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An adverse event can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol -specified procedure, whether or not considered related to the medicinal product or protocol -specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event. 14 days following last dose of study drug (up to 26 weeks)
Primary Number of Participants Discontinued From Study Treatment Due to AEs During the Treatment Period and First 14 Follow-up Days An adverse event is defined as any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An adverse event can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol -specified procedure, whether or not considered related to the medicinal product or protocol -specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event. Up to 24 weeks
Secondary Percentage of Participants Achieving Undetectable HCV RNA During Treatment by Time Point HCV RNA levels in plasma were measured using the Roche COBAS™ Taqman™ HCV Test, v2.0® assay on blood samples drawn from each participant at Week 2, Week 4, Week 12, and at end of treatment. The assay has a lower limit of quantification of 25 IU/mL and a limit of detection of 9.3 IU/mL. Undetectable HCV RNA was defined as HCV RNA < 9.3 IU/mL. From Treatment Week (TW) 2 through end of treatment (up to 24 weeks)
Secondary Percentage of Participants Achieving HCV RNA <25 IU/mL During Treatment by Time Point HCV RNA levels in plasma were measured using the Roche COBAS™ Taqman™ HCV Test, v2.0® assay on blood samples drawn from each participant at Week 2, Week 4, Week 12, and at end of treatment. The assay has a lower limit of quantification of 25 IU/mL and a limit of detection of 9.3 IU/mL. From TW 2 through end of treatment (up to 24 weeks)
Secondary Percentage of Participants Achieving SVR4 HCV RNA was measured using the Roche COBAS™ Taqman™ HCV Test, v2.0® assay, which has a lower limit of quantification of 25 IU/mL and a limit of detection of 9.3 IU/mL. SVR4 was defined as HCV RNA <25 IU/mL (either target detected, unquantifiable or target not detected) 4 weeks after the end of all study therapy. 4 weeks after end of treatment (up to 28 weeks total)
Secondary Percentage of Subjects Achieving SVR24 HCV RNA was measured using the Roche COBAS™ Taqman™ HCV Test, v2.0® assay, which has a lower limit of quantification of 25 IU/mL and a limit of detection of 9.3 IU/mL. SVR24 was defined as HCV RNA <25 IU/mL (either target detected, unquantifiable or target not detected) 24 weeks after the end of all study therapy. 24 weeks after end of treatment (up to 48 weeks total)
Secondary Number of Participants Developing Post-baseline Antiviral Resistance to Grazoprevir Among Participants Not Achieving SVR24 Response Post-baseline resistance associated variants (RAV) analysis was conducted by comparing the amino acid sequences at virologic failure time points to those at baseline (BL): Day 1, pre-dose. A post-BL variant was defined as an amino acid substitution within HCV NS3/4A that was present after the first dose at virologic failure and follow-up visits but not at BL. Post-BL variant analysis was conducted for participants who did not achieve SVR24 who had sequence data available. From Day 1 up to Follow-up Week 24 (up to 48 weeks total)
See also
  Status Clinical Trial Phase
Completed NCT03868163 - Real World Evidence of the Effectiveness and Clinical Practice Use of Glecaprevir Plus Pibrentasvir in Patients With Chronic Hepatitis C in the Russian Federation
Completed NCT01753557 - Efficacy and Safety of MP-424, Peginterferon Alfa-2a (PEG-IFN Alfa-2a), and Ribavirin(RBV) in Treatment-Naïve or Relapsed Hepatitis C Phase 3