Merck Announces Presentation of Phase 3 Results of Investigational Elbasvir/Grazoprevir in People with Chronic Hepatitis C Genotypes 1, 4 or 6 Infection Who Inject Drugs and Are on Opioid Agonist Therapy

Merck

, known as MSD outside the United States and Canada, announced Saturday, the presentation of results from the company's Phase 3 C-EDGE CO-STAR clinical trial evaluating the efficacy and safety of the investigational once-daily tablet elbasvir/grazoprevir1 (50mg/100mg) in patients with chronic hepatitis C virus (HCV) genotypes (GT) 1, 4 or 6 infection who inject drugs and are receiving opioid agonist therapy (OAT). Ninety-five percent (189/198) of patients treated with elbasvir/grazoprevir for 12 weeks in the pre-specified primary efficacy analysis population achieved sustained virologic response 12 weeks after the completion of treatment (SVR12, considered virologic cure). Adherence to treatment was high, with 97 percent of patients taking at least 95 percent of their study medication over the 12 weeks