Langtidsvirkningsfulde data To store undersøgelser med langtidsopfølgning inkluderede 1. 071 patienter og 567 patienter efter behandling i tidligere undersøgelser med henholdsvis non- pegyleret interferon alfa- 2b (med eller uden Rebetol) og pegyleret interferon alfa- 2b (med eller uden Rebetol).
Long-term efficacy data Two large long-term follow-up studies enrolled 1,071 patients and 567 patients after treatment in prior studies with nonpegylated interferon alfa-2b (with or without Rebetol) and pegylated interferon alfa- 2b (with or without Rebetol), respectively.