['hepatitis c virus', 'hiv']
['ldv/sof', 'rbv']

        Inclusion Criteria:

          -  HCV RNA ≥ 10,000 IU/mL at screening

          -  HCV genotype 1 or 4

          -  HIV-1 infection

          -  Cirrhosis determination, a fibroscan or liver biopsy may be required

          -  Screening laboratory values within defined thresholds

          -  Use of protocol specified method(s) of contraception if female of childbearing
             potential or sexually active male

        Exclusion Criteria:

          -  Clinically-significant illness (other than HCV or HIV) or any other major medical
             disorder that may interfere with subject treatment, assessment, or compliance with the
             protocol

          -  Current or prior history of clinical hepatic decompensation, hepatocellular carcinoma
             (HCC), or other malignancy (with the exception of certain resolved skin cancers)

          -  Hepatitis B virus (HBV) infection

          -  Pregnant or nursing female

          -  Chronic use of systemically administered immunosuppressive agents
      