Three-year Follow-up of Participants After Administration of Boceprevir or Narlaprevir for the Treatment of Chronic Hepatitis C (P05063)

Long-Term Follow-Up of Subjects in a Phase 1, 2, or 3 Clinical Trial in Which Boceprevir or Narlaprevir Was Administered for the Treatment of Chronic Hepatitis C

Study P05063 is a 3-year long-term follow-up (LTFU) study in participants previously treated with boceprevir (BOC) or narlaprevir (NAR) in a Phase 1, 2, or 3 clinical study. Participants will be followed for up to 3.5 years after the end of their participation in the treatment protocol to document maintenance of the antiviral response (for sustained responders) and to characterize the long-term safety after use of this therapeutic regimen. LTFU procedures include collection of plasma samples for measuring Hepatitis C Virus ribonucleic acid (HCV-RNA) by polymerase chain reaction (PCR) and HCV sequence analysis. No drug therapy will be administered as part of this study.

In Part 1, participants who previously participated in one of nine boceprevir studies (P03523 [NCT00423670], P03659 [NCT00160251], P04487 [No NCT], P05101 [NCT00708500], P05216 [NCT00705432], P05411 [NCT00959699], P05514 [NCT00910624], P05685 [NCT00845065], and P06086 [NCT01023035]) were followed for response. In Part 2, participants who previously participated in one narlaprevir study (P05104 [NCT00797745]) were followed for response.

Inclusion Criteria:

• Participant must be willing to give written informed consent and be able to adhere to the visit schedule.
• Participant must have received at least one dose of boceprevir or narlaprevir in a previous Phase 1, 2, or 3 clinical study.

Exclusion Criteria:

• Concurrent participation in any other clinical study for the treatment of chronic hepatitis C.
• Retreatment with any antiviral or immunomodulatory drug for chronic hepatitis C after completion of, or discontinuation from, the SPRI Phase 1, 2, or 3 clinical study in which the participant previously participated.
• Any condition which in the opinion of the Investigator would make the participant unsuitable for enrollment.