['hepatitis c virus infection']
['sof/vel']

        Key Inclusion Criteria:

          -  Willing and able to provide written informed consent

          -  HCV RNA ≥ 10^4 IU/mL at screening

          -  Chronic HCV infection (≥ 6 months) documented by prior medical history or liver biopsy

          -  Any HCV genotype (1, 2, 3, 4, 5, 6 or indeterminate)

          -  HCV treatment-naive or treatment-experienced

          -  Liver imaging within 6 months of Day 1 is required in cirrhotic patients only to
             exclude hepatocellular carcinoma (HCC)

        Key Exclusion Criteria:

          -  Current or prior history of clinically-significant illness (other than HCV),
             gastrointestinal disorder, clinical hepatic decompensation, or post-operative
             condition that could interfere with the absorption of the study drug

          -  Pregnant or nursing female or male with pregnant female partner

          -  Chronic liver disease of a non HCV etiology

          -  Infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV)

        Note: Other protocol defined Inclusion/Exclusion criteria may apply.
      