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Trial record 38 of 82 for:    GRAZOPREVIR ANHYDROUS AND ELBASVIR

Study of Efficacy and Safety of Grazoprevir (MK-5172)/Elbasvir (MK-8742) Combination Regimen for Treatment-Naïve Participants With Chronic Hepatitis C Virus Genotypes 1, 4, and 6 (MK-5172-060)

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ClinicalTrials.gov Identifier: NCT02105467
Recruitment Status : Completed
First Posted : April 7, 2014
Results First Posted : April 12, 2016
Last Update Posted : October 2, 2018
Sponsor:
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp.

Brief Summary:
This was an efficacy and safety study of grazoprevir (MK-5172) in combination with elbasvir (MK-8742) in treatment-naive participants with chronic hepatitis C virus (HCV) genotype (GT) 1, 4, or 6 infection. Participants were randomly assigned (3:1 ratio) to immediate treatment or deferred treatment (placebo control). The primary efficacy hypothesis was that the proportion of participants receiving combination therapy in the Immediate Treatment Arm who achieve sustained viral response at 12 weeks after the end of study treatment (SVR12) is superior to 73%.

Condition or disease Intervention/treatment Phase
Chronic Hepatitis C Virus Drug: Grazoprevir 100mg / Elbasvir 50 mg FDC Drug: Placebo to Grazoprevir / Elbasvir 50 mg FDC Phase 3

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 421 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Phase III Randomized Clinical Trial to Study the Efficacy and Safety of the Combination Regimen of MK-5172/MK-8742 in Treatment-Naïve Subjects With Chronic HCV GT1, GT4, and GT6 Infection.
Actual Study Start Date : June 5, 2014
Actual Primary Completion Date : February 26, 2015
Actual Study Completion Date : September 6, 2015

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: Immediate Treatment Group
Participants received blinded grazoprevir 100 mg / elbasvir 50 mg fixed-dose combination (FDC) tablet orally once daily for 12 weeks followed by a 24-week follow-up period
Drug: Grazoprevir 100mg / Elbasvir 50 mg FDC
Placebo Comparator: Deferred Treatment Group
Participants received blinded placebo tablet orally once daily for 12 weeks; after a 4-week unblinding/washout period participants received open label grazoprevir 100 mg / elbasvir 50 mg FDC tablet orally once daily for 12 weeks. Follow-up was continued for an additional 24 weeks.
Drug: Grazoprevir 100mg / Elbasvir 50 mg FDC
Drug: Placebo to Grazoprevir / Elbasvir 50 mg FDC



Primary Outcome Measures :
  1. Percentage of Participants Achieving Sustained Virologic Response at 12 Weeks After the End of Treatment (SVR12) [ Time Frame: Week 24 (12 weeks after the end of treatment) ]
    Hepatitis C Virus (HCV) ribonucleic acid (RNA) was measured using the Roche COBAS® Taqman® HCV Test, v2.0 assay. SVR12 was defined as HCV RNA <Lower Limit of Quantification (<15 IU/mL) 12 weeks after the end of all study therapy.

  2. Percentage of Participants Experiencing at Least One Adverse Event [ Time Frame: Up to Week 14 (14 days after the Blinded Treatment was completed) ]
    An adverse event is defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. An adverse event can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding), 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 of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event.

  3. Percentage of Participants Discontinued From Study Treatment Because of an Adverse Event [ Time Frame: Up to Week 12 (end of Blinded Treatment) ]
    An adverse event is defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. An adverse event can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding), 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 of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event.


Secondary Outcome Measures :
  1. Percentage of Participants Achieving Sustained Virologic Response at 24 Weeks After the End of Treatment (SVR24) [ Time Frame: Week 36 (24 weeks after the end of treatment) ]
    Hepatitis C Virus RNA was measured using the Roche COBAS® Taqman® HCV Test, v2.0 assay. SVR24 was defined as HCV RNA <Lower Limit of Quantitation (<15 IU/mL) 24 weeks after the end of all study therapy.


Other Outcome Measures:
  1. Percentage of Participants Achieving Sustained Virologic Response at 4 Weeks After the End of Treatment (SVR4) [ Time Frame: Week 16 (4 weeks after the end of treatment) ]
    Hepatitis C Virus RNA was measured using the Roche COBAS® Taqman® HCV Test, v2.0 assay. SVR4 was defined as HCV RNA <Lower Limit of Quantitation (<15 IU/mL) 4 weeks after the end of all study therapy.



Information from the National Library of Medicine

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

Inclusion criteria:

  • Documented chronic HCV GT1, GT4, or GT6 with no evidence of non-typeable or mixed genotype infection (positive for anti-HCV antibody, HCV RNA, or any of the listed GTs at least 6 months prior to screening must be confirmed by screening lab results)
  • Cirrhosis defined by: liver biopsy showing cirrhosis METAVIR F4; or Fibroscan showing cirrhosis with a result of >12.5 kiloPascals (kPa); or FibroSure® (Fibrotest®) score of >0.75 and an aspartate aminotransferase (AST): platelet ratio index (APRI) of >2
  • Absence of cirrhosis defined by: liver biopsy showing absence of cirrhosis, or Fibroscan with a result of ≤12.5 kPa, or Fibrosure® (Fibrotest®) score of <= 0.48 and APRI of <=1
  • HCV treatment status of treatment naïve (naïve to all anti-HCV treatment) and can also be ineligible to take pegylated interferon
  • Female participant not of reproductive potential, or female of reproductive potential and agrees to avoid becoming pregnant while receiving study drug and for 14 days after the last dose of study drug (using abstinence or acceptable methods of contraception)

Exclusion criteria:

  • Evidence of decompensated liver disease manifested by the presence of or history of ascites, esophageal or gastric variceal bleeding, hepatic encephalopathy or other signs or symptoms of advanced liver disease. For cirrhotics, participants who are Child-Pugh Class B or C or who have a Pugh-Turcotte (CPT) score >6
  • Co-infection 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 is 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 from Day 1 throughout treatment and 14 days after the last dose of study medication or longer if dictated by local regulations
  • Organ transplant (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 disorder (e.g., celiac sprue disease)
  • Any medical condition requiring, or likely to require, chronic systemic administration of corticosteroids, TNF antagonists, or other immunosuppressant drugs during the course of the trial
  • Evidence of history of chronic hepatitis not caused by HCV, including but not limited to nonalcoholic steatohepatitis (NASH), drug-induced hepatitis, and autoimmune hepatitis

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02105467


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

Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier: NCT02105467     History of Changes
Other Study ID Numbers: 5172-060
2014-000137-22 ( EudraCT Number )
First Posted: April 7, 2014    Key Record Dates
Results First Posted: April 12, 2016
Last Update Posted: October 2, 2018
Last Verified: September 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf
URL: http://engagezone.msd.com/ds_documentation.php
Additional relevant MeSH terms:
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MK-5172
Hepatitis A
Hepatitis C
Hepatitis C, Chronic
Hepatitis
Hepatitis, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Antiviral Agents
Anti-Infective Agents