Research Study

A Phase II, Randomized, Open-Label Clinical Trial to Study the Efficacy and Safety of the Combination Regimen of MK-3682B (MK-5172 + MK-3682 + MK-8408 Fixed Dose Combination (FDC)) in Subjects With Chronic HCV GT1 or GT3 Infection Who Have Failed a Direct Acting Antiviral Regimen
Principal Investigator 
Eric M. Yoshida


Body Locations and Systems 
Hepatitis C 
Study Start/End 
Sep 11, 2017 to Sep 5, 2018
Diamond Health Care Centre
Jo-Ann Ford, Clinical Research Coordinator
Email Address
Purpose of Study 

This is a randomized, multicenter, open-label trial of the combination regimen of MK-5172 (grazoprevir [GZR]) (100 mg), MK-3682 (450 mg) and MK-8408 (ruzasvir) (60 mg) for 16 weeks with ribavirin (RBV) or 24 weeks without RBV in cirrhotic (C) or non-cirrhotic (NC) hepatitis C virus (HCV) genotype (GT) 1 or GT3-infected participants who have previously failed a direct-acting antiviral regimen (DAA). The combination regimen will be administered as two fixed-dose combination (FDC) tablets, referred to as MK-3682B, given once-daily.

The study will evaluate the efficacy of the combination regimen of MK-5172 (GZR), MK-3682 and MK-8408 (ruzasvir) with or without ribavirin as assessed by the proportion of participants achieving Sustained Virologic Response 12 weeks (SVR12) after the end of all study therapy.


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Study Coordinators and Research Nurses cannot give medical advice over the phone. Telephone numbers and email addresses are provided for obtaining additional information on specific research studies only. If you have specific questions which require clinical expertise, please call your primary care physician.