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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