) today announced interim data from the Phase 2 ELECTRON study examining the investigational once-daily oral agent GS-7977 plus ribavirin in treatment-naïve patients with genotype 1 chronic hepatitis C virus infection. Of the 25 patients who completed 12 weeks of treatment with the GS-7977-based regimen, 88 percent of patients (n=22/25) remained HCV RNA undetectable four weeks after completion of treatment. Three patients experienced viral relapse. These findings are being presented this week during a poster session (Poster #1113) at the 47th Annual Meeting of the European Association for the Study of the Liver (International Liver Congress 2012) in Barcelona, Spain.