Virologic Resistance Analysis From a Phase 2 Study of MK-5172 Combined With Pegylated Interferon/Ribavirin in Treatment-Naive Patients With Hepatitis C Virus Genotype 1 Infection

Abstract
Background. Virologic failure following treatment of hepatitis C virus (HCV) genotype 1 with direct-acting antiviral agents is often accompanied by the emergence of resistant variants. MK-5172 is an investigational once-daily protease inhibitor. We analyzed variants in treatment-naive noncirrhotic patients with virologic failure on MK-5172 (100–800 mg/day) plus pegylated interferon alfa/ribavirin (peg-IFN/RBV) during a phase 2 trial.