A Study of Ombitasvir/Paritaprevir/Ritonavir and Dasabuvir With or Without Sofosbuvir and Ribavirin in Direct-Acting Antiviral Agent Treatment-Experienced Adults With Chronic Hepatitis C Virus Infection

An Open-Label Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of Ombitasvir/ABT-450/Ritonavir (Ombitasvir/ABT-450/r) and Dasabuvir Co-administered With or Without Sofosbuvir (SOF) and Ribavirin (RBV) in Direct-Acting Antiviral Agent (DAA) Treatment-Experienced Adults With Genotype 1 Chronic Hepatitis C Virus (HCV) Infection

The purpose of this study is to evaluate the safety and efficacy of ombitasvir/paritaprevir/ritonavir and dasabuvir with or without sofosbuvir (SOF) and ribavirin (RBV) in DAA treatment-experienced adults with Genotype 1 Chronic Hepatitis C Virus infection. This study will contain 2 parts.

Part 1: Approximately 20 participants and at least 10 of the 20 participants previously treated with the combination of ombitasvir/paritaprevir/ritonavir and dasabuvir, with or without RBV, and experienced treatment failure.

Part 2: Approximately 10 participants and all participants previously treated with SOF/ledipasvir and experienced treatment failure.

Efficacy, safety, and demographic analyses were performed separately for the 2 study parts using the intent-to-treat (ITT) population, which consists of all enrolled participants who received at least one dose of study drug.

Inclusion Criteria:

• History of previous direct acting antiviral (DAA) therapy failure; Part 2 only: history of previous direct acting antiviral (DAA) therapy failure and received at least 8 weeks of SOF/ledipasvir; participant must be treatment naïve to all other anti-HCV therapies
• HCV genotype 1 infection
• Females must be post-menopausal, of non-child bearing potential or practicing specific forms of birth control

Exclusion Criteria:

• Positive screen for hepatitis B surface antigen or anti-human immunodeficiency virus antibody
• Discontinuation of the prior DAA treatment for reasons other than virologic failure
• Confirmed presence of hepatocellular carcinoma
• Abnormal lab tests