
A new drug approved by FDA to treat chronic hepatitis C virus (HCV) infection this week enters a competitive, lucrative market headed up by Gilead Science’s Sovaldi and Harvoni, as well as AbbVie’s Viekira Pak. FDA granted priority review and breakthrough therapy designation to Gilead’s combination product, Epclusa (sofosbuvir 400 mg/velpatasvir 100 mg).