A Follow-up Study to Assess Resistance and Durability of Response to AbbVie Direct-Acting Antiviral Agent (DAA) Therapy in Subjects Who Participated in Phase 2 or 3 Clinical Studies for the Treatment of Chronic Hepatitis C Virus (HCV) Infection

Percentage of Participants Who Experienced Relapse12overall With and Without New HCV Infection

时间窗: Up to 3 years post-treatment

Relapse is defined as a confirmed HCV ribonucleic acid (RNA) ≥ the lower limit of quantitation (LLOQ) at any time during the post-treatment period for a participant who had HCV RNA \< LLOQ at the end of treatment. Relapse12overall is defined as a confirmed HCV RNA ≥ LLOQ at any time after the sustained virologic response at Week 12 post-dosing (SVR12) assessment time point for a participant who achieved SVR12 and had post-SVR12 HCV RNA data available. SVR12 is defined as HCV RNA \< LLOQ in the SVR12 window (12 weeks after the last actual dose of study drug) without any confirmed quantifiable (≥ LLOQ) post-treatment value before or during that SVR window. New HCV infection is defined as re-infection with a different HCV isolate.

Number of HCV Genotype (GT)1a-Infected Participants With Persistence of Treatment-Emergent Substitutions in NS3, NS5A, or NS5B

时间窗: from the last dose of study drug in the previous study up to 3 years post-treatment

The persistence of specific hepatitis C amino acid variants (treatment-emergent substitutions) associated with drug resistance in NS3, NS5A, or NS5B was evaluated in participants who had not achieved SVR12. Post-baseline time points were calculated relative to the last dose of study drug in the previous study.