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Study of Grazoprevir (MK-5172) + Elbasvir (MK-8742) + Ribavirin in Participants With Chronic Hepatitis C Who Failed Prior Direct-Acting Antiviral Therapy (MK-5172-048)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier:
NCT02105454
First received: April 2, 2014
Last updated: March 1, 2017
Last verified: March 2017
  Purpose
In this study, participants with hepatitis C virus (HCV) genotype 1 (GT1) who failed prior direct-acting antiviral (DAA) therapy will receive Grazoprevir (MK-5172) + Elbasvir (MK-8742) + Ribavirin (RBV) to evaluate sustained virologic response (SVR) using this drug combination.

Condition Intervention Phase
Hepatitis C Virus
Drug: Grazoprevir (GZR)
Drug: Elbasvir (EBR)
Drug: Ribavirin (RBV)
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: A Phase II Clinical Trial to Study the Efficacy and Safety of the Combination Regimen of MK-5172 + MK-8742 + Ribavirin (R) in Subjects With Chronic Hepatitis C Virus Infection Who Failed Prior Direct Acting Antiviral Therapy

Resource links provided by NLM:


Further study details as provided by Merck Sharp & Dohme Corp.:

Primary Outcome Measures:
  • Percentage of Participants Achieving Sustained Virologic Response (SVR) at 12 Weeks After the End of All Study Therapy (SVR12) [ Time Frame: Up to 24 weeks ]
    SVR12 is defined as participants having hepatitis C virus ribonucleic acid (HCV RNA) level lower than the limit of quantification (LLoQ, <15 IU/mL in plasma), either target detected and unquantifiable or undetectable 12 weeks after the end of all study therapy.

  • Percentage of Participants Experiencing Adverse Events [ Time Frame: Up to 40 weeks (from Day 1 [post-dose] through 24 [-12/+4] weeks following last dose of study drug) ]
    Adverse event is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the Sponsor's product, whether or not considered related to the use of the product.

  • Percentage of Participants Discontinuing Study Drug Due to an Adverse Event [ Time Frame: Up to 12 weeks ]
    Adverse event is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the Sponsor's product, whether or not considered related to the use of the product.


Secondary Outcome Measures:
  • Percentage of Participants Achieving SVR12 by Prior Direct-acting Antiviral (DAA) Therapy [ Time Frame: Up to 24 weeks ]
    SVR12 is defined as participants having HCV RNA level lower than the LLoQ (<15 IU/mL in plasma), either target detected and unquantifiable or undetectable 12 weeks after the end of all study therapy. Prior DAA therapy regimen included boceprevir, telaprevir, simeprevir, or sofosbuvir taken concomitantly with peginterferon and ribavirin. Below categories specify with our without resistance-associated variants (RAVs) of the hepatitis C virus.


Enrollment: 79
Study Start Date: May 2014
Study Completion Date: May 2015
Primary Completion Date: May 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: GZR 100 mg + EBR 50 mg + RBV for 12 weeks
Participants receive grazoprevir 100 mg once per day (QD), elbasvir 50 mg QD, and RBV 800 - 1400 mg total daily dose divided twice per day (based on body weight) for 12 weeks
Drug: Grazoprevir (GZR)
100 mg oral tablet (total daily dose)
Drug: Elbasvir (EBR)
10 mg oral capsule (total daily dose = 5 capsules)
Drug: Ribavirin (RBV)
200 mg oral capsule (total daily dose = 4-7 capsules)

  Eligibility

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion criteria:

  • Documented chronic HCV GT1 infection (with no evidence of non-typable or mixed genotype)
  • Absence of cirrhosis, or cirrhosis with these criteria: METAVIR F4, or Fibroscan with result >12.5 kPa, or FibroSure® (Fibrotest®) score of >0.75 + aspartate aminotransferase (AST): platelet ratio index (APRI) of >2- Prior regimen containing an approved DAA (boceprevir, telaprevir, simeprevir, or sofosbuvir), pegylated interferon, and/or RBV
  • Participants of reproductive potential must agree to remain truly abstinent or use (or have their partner use) 2 acceptable methods of birth control from at least 2 weeks prior to Day 1 and continue until at least 6 months after last dose of study drug, or longer if dictated by local regulations

Exclusion criteria:

  • Received any HCV regimen containing a DAA with the exception of boceprevir, telaprevir, simeprevir, or sofosbuvir in combination with pegylated interferon and/or RBV
  • Evidence of decompensated liver disease or cirrhosis
  • Co-infected with hepatitis B virus or human immunodeficiency virus (HIV)
  • History of malignancy <=5 years prior to signing informed consent except for adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer or carcinoma in situ; or under evaluation for other active or suspected malignancy
  • Evidence of hepatocellular carcinoma (HCC) or under evaluation for HCC
  • Currently participating or has participated in a study with an investigational compound within 30 days of signing informed consent and is not willing to refrain from participating in another such study during the course of this study
  • Clinically-relevant drug or alcohol abuse within 12 months of screening
  • Pregnant, breast-feeding, or expecting to conceive or donate eggs or sperm from at least 2 weeks prior to Day 1 and continue throughout treatment and follow up, or longer if dictated by local regulations
  • Male participant whose female partner (s) is/are pregnant
  • Organ transplants (including hematopoietic stem cell transplants) other than cornea and hair
  • Poor venous access
  • History of gastric surgery (e.g., stapling, bypass) or history of malabsorption disorders (e.g., celiac sprue disease)
  • Hemoglobinopathy, including, but not limited to, thalassemia major
  • Any medical condition requiring, or likely to require, chronic systemic administration of corticosteroids during the course of the trial
  • Evidence or history of chronic hepatitis not caused by HCV, including but not limited to nonalcoholic steatohepatitis (NASH), drug-induced hepatitis, and autoimmune hepatitis
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT02105454

Sponsors and Collaborators
Merck Sharp & Dohme Corp.
Investigators
Study Director: Medical Director Merck Sharp & Dohme Corp.
  More Information

Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier: NCT02105454     History of Changes
Other Study ID Numbers: 5172-048
2013-004213-41 ( EudraCT Number )
Study First Received: April 2, 2014
Results First Received: February 3, 2016
Last Updated: March 1, 2017
Individual Participant Data  
Plan to Share IPD: Yes
Plan Description:

http://www.merck.com/clinical-trials/pdf/Merck%20Procedure%20on%20Clinical%20Trial%20Data%20Access%20Final_Updated%20July_9_2014.pdf

http://engagezone.msd.com/ds_documentation.php


Additional relevant MeSH terms:
Hepatitis
Hepatitis A
Hepatitis C
Hepatitis, Chronic
Hepatitis C, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Ribavirin
Antiviral Agents
Antimetabolites
Molecular Mechanisms of Pharmacological Action
Anti-Infective Agents

ClinicalTrials.gov processed this record on May 25, 2017