Schering-Plough reported data from EPIC3, a large ongoing clinical study, showing that retreatment with PEG-INTRON(R) (peginterferon alfa-2b) and REBETOL(R) (ribavirin, USP) combination therapy can result in sustained virologic response(1) (SVR) in patients with chronic hepatitis C who failed previous treatment with any alpha interferon-based combination therapy, including peginterferon regimens. In this study, 56 percent of patients who had undetectable virus (HCV-RNA) after 12 weeks went on to achieve SVR with a 48-week course of therapy. Of the first 1,354 patients retreated, approximately 38 percent had undetectable virus at week 12. Importantly, patients who did not have undetectable virus at 12 weeks had little chance of achieving SVR. Overall, 23 percent of patients achieved SVR.