Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Investigate the Efficacy and Safety of GS-7977 + Ribavirin for 12 Weeks in Subjects With Chronic Genotype 2 or 3 HCV Infection Who Are Interferon Intolerant, Interferon Ineligible or Unwilling to Take Interferon
Brief Summary: This multicenter study was to evaluate subjects with chronic genotype 2 or 3 HCV infection who were interferon (IFN) ineligible, IFN intolerant or unwilling to take IFN. Participants were randomized in a 3:1 ratio to receive sofosbuvir (SOF)+ribavirin (RBV), or placebo to match SOF+placebo to match RBV. Randomization was stratified by presence/absence of cirrhosis. Approximately 20% of participants may have had evidence of cirrhosis at screening.


Options:
A: Inclusion Criteria:

* Age \> 18, with chronic genotype 1 HCV infection
* HCV treatment-naive
* HCV RNA \> 10,000 IU/mL at screening
* Screening laboratory values within defined thresholds
* Use of two effective contraception methods if female of childbearing potential or sexually active male

Exclusion Criteria:

* Pregnant or nursing female or male with pregnant female partner
* Presence of cirrhosis
* Coinfection with HIV or hepatitis B virus (HBV)
* Current or prior history of clinical hepatic decompensation
* Chronic use of systemic immunosuppressive agents
* History of clinically significant illness or any other medical disorder that may interfere with subject treatment, assessment or compliance with the protocol
B: Inclusion Criteria:

* Age between 18 and 60 years;
* Body weight between 45 and 125 kg;
* Documented chronic hepatitis C genotype 1;
* Liver biopsy with histology consistent with chronic hepatitis and no other etiology for chronic liver disease within of 5 years of Day 1;
* Participant and participant's partner(s) must each agree to use acceptable methods of contraception 2 weeks prior to Day 1 and at least 6 months after the last dose of study medication;
* Written informed consent.

Exclusion Criteria:

Include, but are not limited to, the following:

* Prior treatment for hepatitis C;
* Co-infection with HIV or hepatitis B virus (HBsAg positive);
* Evidence of decompensated liver disease;
* Diabetic and hypertensive participants with clinically significant ocular exam findings;
* Pre-existing psychiatric condition, including but not limited to:

  * Current moderate or severe depression;
  * History of depression associated with any of the following:

    * Hospitalization for depression;
    * Electroconvulsive therapy for depression;
    * Depression that resulted in a prolonged absence from work and/or significant disruption of daily functions;
  * Suicidal or homicidal ideation and/or attempt;
  * History of severe psychiatric disorders (including but not limited to schizophrenia, psychosis, bipolar disorder, post-traumatic stress disorder or mania);
  * Past history or current use of lithium;
  * Past history or current use of antipsychotic drugs for listed conditions.
* Substance abuse within protocol specified timeframes;
* Pre-existing medical conditions that could interfere with the participant's participation in and completion of the study, including but not limited to chronic pulmonary disease, cardiac dysfunction or immunologically-mediated disease;
* Active or suspected malignancy or history of malignancy within the past 5 years;
* Participants who are pregnant or nursing; participants who intend to become pregnant during the study period. Male participants with partners who are, or intend to become, pregnant during the study period.
* Treatment with any investigational drug or participation in any clinical trial 30 days within Screening;
* Hemoglobin \<12 g/dL for females and \<13 g/dL for males;
* Neutrophils \<1500 mm\^3; Blacks: \<1200/mm\^3;
* Platelets \<100,000/mm\^3;
* Other clinically significant laboratory test abnormalities.
C: Inclusion Criteria:

* Females must be practicing specific forms of birth control on study treatment, or be post-menopausal for more than 2 years or surgically sterile
* Chronic hepatitis C, genotype 1b-infection (HCV RNA level greater than or equal to 10,000 IU/mL at screening)
* Subject has never received antiviral treatment for hepatitis C infection
* No evidence of liver cirrhosis

Exclusion Criteria:

* Significant liver disease with any cause other than HCV as the primary cause
* Positive hepatitis B surface antigen or anti-human immunodeficiency virus antibody
* Positive screen for drugs or alcohol
* Significant sensitivity to any drug
* Use of contraindicated medications within 2 weeks of dosing
* Abnormal laboratory tests
D: Inclusion Criteria:

* Infection with HCV genotype 2 or 3
* Cirrhosis determination
* Subject meets one of the following classifications:

  1. IFN unwilling
  2. IFN ineligible
  3. IFN intolerant
* Screening laboratory values within defined thresholds
* Subject has not been treated with any investigational drug or device within 30 days of the Screening visit
* Use of highly effective contraception methods if female of childbearing potential or sexually active male

Exclusion Criteria:

* Prior exposure to an direct-acting antiviral targeting the HCV nonstructural protein (NS)5B polymerase
* Pregnant or nursing female or male with pregnant female partner
* Current or prior history of clinical hepatic decompensation
* History of clinically-significant illness or any other major medical disorder that may interfere with subject treatment, assessment or compliance with the protocol
* Excessive alcohol ingestion or significant drug abuse

Answer: D