(Treatment Failure Trial) RESPOND-2 Study Design (Treatment Failure Trial) Weeks 12 24 48 72 Arm 1 : SOC Comparator CONTROL PEG + RBV 4 wk Placebo + PEG + RBV 44 wk Follow-up 24 wk TW 8 HCV-RNA Undetectable SCREENING Arm 2 : Response Guided Therapy Follow-up 36 wk PEG + RBV 4 wk BOC + PEG + RBV 32 wk TW 8 HCV-RNA Detectable/TW 12 Undetectable Placebo + PEG + RBV 12 wk Follow-up 24 wk EXPERIMENTAL ARMS Arm 3: SOC + Boceprevir PEG + RBV 4 wk BOC+ PEG + RBV 44 wk Follow-up 24 wk