['hepatitis c']
['sof/vel/vox', '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)

          -  HCV treatment naive or treatment experienced with an interferon (IFN)-based regimen

          -  Use of protocol specified methods of contraception

        Key Exclusion Criteria:

          -  Current or prior history of clinically significant illness that may interfere with
             participation in the study

          -  Screening ECG with clinically significant abnormalities

          -  Laboratory parameters outside the acceptable range at screening

          -  Pregnant or nursing female

          -  Chronic liver disease not caused by HCV

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

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