Study to Evaluate the Efficacy and Safety of ABT-450/Ritonavir/ABT-267 (ABT-450/r/ABT-267) in Japanese Adults With Subgenotype 1b Chronic Hepatitis C Virus (HCV) Infection

A Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of ABT-450/Ritonavir/ABT-267 (ABT-450/r/ABT-267) in Treatment-Naïve and Treatment-Experienced Japanese Adults With Subgenotype 1b Chronic Hepatitis C Virus (HCV) Infection With and Without Compensated Cirrhosis (GIFT I)

This is a phase 3, double-blinded, multicenter study. The study will consist of 2 substudies: Substudy 1 (SS1) will be double-blinded and enroll non-cirrhotic subjects and Substudy 2 (SS2) will be open label and enroll subjects with compensated cirrhosis.

Inclusion Criteria:

• Chronic HCV-infection prior to study enrollment
• Screening laboratory result indicating HCV subgenotype 1b infection
• Subject has plasma HCV RNA level greater than 10,000 IU/mL at Screening
• Voluntarily sign an informed consent
• Females must be practicing specific forms of birth control on study treatment, or be post-menopausal for more than 2 years or surgically sterile

Exclusion Criteria:

• Co-infection of Hepatitis B Virus (HBV), human immunodeficiency virus (HIV) or any HCV genotype other than subgenotype 1b
• Prior therapy with direct acting antiviral agents for the treatment of HCV, including telaprevir, simeprevir and boceprevir
• Any cause of liver disease other than chronic HCV-infection, including but not limited to the following: hemochromatosis; alpha-1 antitrypsin deficiency; Wilson's disease; autoimmune hepatitis; alcoholic liver disease; drug-related liver disease; clinically significant laboratory abnormalities; uncontrolled clinically significant disease, disorder or medical illness