Please select the eligibility criteria that correspond to the clinical trial below.
Title: Phase 1b, Randomized, Double-Blind, Multiple-Dose Ranging Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Antiviral Activity of GS-5816 in Subjects With Chronic Hepatitis C Virus Infection
Brief Summary: The primary objective of the study is to evaluate the safety, tolerability, and antiviral activity of velpatasvir (formerly GS-5816) in HCV treatment naive participants with genotypes 1-6.


Options:
A: Inclusion Criteria:

* Chronically infected with HCV genotype 1
* Treatment naive or treatment non-responders or treatment intolerant
* HCV RNA viral load of ≥10\*5\* IU/mL
* BMI 18 to 35 kg/m²

Exclusion Criteria:

* Any significant acute or chronic medical illness which is not stable or is not controlled with medication and not consistent with HCV infection
* Major surgery within 4 weeks of study drug administration and any gastrointestinal surgery that could impact the absorption of study drug
* Co-infection with HIV or HBV
B: Key Inclusion Criteria:

* HCV treatment-naive adult participants (18-65 years of age) with chronic HCV infection and plasma HCV RNA ≥ 5 log10 IU/mL at screening
* Agree to use protocol defined precautions against pregnancy

Key Exclusion Criteria:

* Chronic liver disease of a non-HCV etiology (e.g., hemochromatosis, Wilson's disease, α1 antitrypsin deficiency, cholangitis)
* Evidence of cirrhosis
* Evidence of current drug abuse
* Screening laboratory results outside the protocol specified requirements

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

* \>=18 and \<=65 years of age
* Body weight \>=40 and \<=125 kg
* Documented history of HIV infection for greater than 6 months prior to Day 1
* On an optimized anti-retroviral treatment regimen (OTR) with stable HIV disease with CD4 \>=200 cells/µL and HIV-1 RNA viral load \<50 copies/mL
* Documented chronic hepatitis C (CHC) genotype 1 infection (greater than 6 months prior to Day 1)
* Use of acceptable methods of contraception 2 weeks prior to Day 1 and at least 6 months or longer after treatment
* Liver biopsy with histology consistent with CHC and no other etiology

Exclusion Criteria:

* Participants who received prior treatment for hepatitis C other than herbal remedies except those with known hepatotoxicity
* Coinfected with hepatitis B virus (Hepatitis B surface antigen (HBsAg) positive) and/or demonstrating signs and symptoms consistent with concomitant infection
* Evidence of decompensated liver disease
* Participants who have changed their anti-retroviral regimen within the last 3 months prior to Day 1 or had first initiated anti-retroviral therapy within the last 6 months prior to Day 1
* Use of certain HIV medications will not be allowed. Medications will be reviewed by the Investigator
* History of clinically significant opportunistic infections (except oral thrush) within the last year prior to Day 1
* Current evidence of substance abuse within 3 years of the Screening Visit
* History of a clinical diagnosis within the past 6 months of substance abuse prior to Day 1
* Participants receiving opiate agonist substitution therapy but not enrolled in an opiate substitution maintenance program
* History of marijuana use deemed excessive by the Investigator
* Infected with HIV-2
* Use of any HIV protease inhibitor without the coadministration of ritonavir within one month of Day 1 and throughout the period of the trial
* Participants receiving any of the following medication(s) within 2 weeks prior to the Day 1 visit: alfuzosin, antiarrhythmics (amiodarone, bepridil, flecainide, propafenone, and quinidine), ergot derivatives, cisapride, lovastatin, simvastatin, pimozide, triazolam, and orally administered midazolam.

Key Laboratory Exclusion Criteria:

* Hematologic, biochemical, and serologic criteria (growth factors may not be used to achieve trial entry requirements):

  * Hemoglobin \<11 g/dL for females and \<12 g/dL for males
  * Neutrophils \<1500/mm\^3 (blacks/African-Americans: \<1200/mm\^3)
  * Platelets \<100,000/mm\^3
  * Direct bilirubin \>1.5 x ULN (upper limit of normal) of the laboratory reference range. Total bilirubin \>1.6 mg/dL unless history of Gilbert's disease or antiretroviral regimen contains atazanavir. If Gilbert's disease is the proposed etiology, this must be documented in the participant's chart
* Alpha fetoprotein (AFP):

  * AFP \>100 ng/mL OR
  * AFP 50 to 100 ng/mL (requires a liver ultrasound and participants with findings suspicious for hepatocellular carcinoma are excluded)
D: Inclusion Criteria:

* Males and females of non-childbearing potential
* Genotype 1 chronic hepatitis C
* Laboratory evidence of HCV infection for 6 months
* Histologic evidence of chronic hepatitis C
* Subjects who have a body mass index (BMI) of ≤35 kg/m² (BMI = weight in kg / height² in meters)
* Treatment Arm E: This arm will enroll only subjects infected with HCV genotype 1b virus
* Treatment Arm F: This arm will enroll only subjects infected with HCV genotype 1a virus

Exclusion Criteria:

* Subjects who have received any previous treatment with any approved or investigational drug or drug regimen for the treatment of hepatitis C
* Subjects with any contraindications to peginterferon alfa-2a and/or ribavirin
* Subjects with any other cause of significant liver disease in addition to hepatitis C, which may include, but is not limited to malignancy with hepatic involvement, hepatitis B, drug or alcohol-related cirrhosis, autoimmune hepatitis, hemochromatosis, Wilson's disease, nonalcoholic steatohepatitis (NASH), or primary biliary cirrhosis
* Histologic evidence of hepatic cirrhosis

Answer: B