Observational Study of Patients With Chronic Hepatitis C Virus (HCV) Infected With HCV Genotype 1 Low Virus Load (LVL 1) and Effect of PegIntron Plus Rebetol Treatment (Study P04793 Part 2)

The purpose of this observational study was to provide summary data from participants who relapsed at the end of the follow-up phase after 24 weeks of treatment with standard care PegIntron plus ribavirin in Part 1 of the study (NCT00709228) and who then received retreatment during Part 2 of the study. Relapse was defined as having a positive virology result at the Week 24 post-treatment follow-up, after a negative result at the Week 24 end-of-treatment time point. Hepatitis C Virus Ribonucleic Acid (HCV-RNA) levels were measured at Day 1 and Weeks 12, 24, and 48 of the extension, and at Follow-up Week 24.