Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled Study To Evaluate The Safety And Efficacy Of Filibuvir Plus Pegylated Interferon Alfa-2a And Ribavirin In Treatment-Naive, HCV Genotype 1 Infected Subjects
Brief Summary: The primary objective for this study is to determine if the addition of filibuvir to a standard regimen of peginterferon/ribavirin (pegIFN/RBV) significantly increases the proportion of subjects who achieve a sustained viral response (SVR) compared to peginterferon/ribavirin (pegIFN/RBV) therapy alone.


Options:
A: Key Inclusion Criteria:

* Participants chronically infected with hepatitis C virus (HCV) genotype 2 or 3
* No previous exposure to an interferon formulation (ie, interferon alfa, pegylated interferon alfa-2a ) or ribavirin
* Body mass index (BMI) of 18 to 35 kg/m\^2, inclusive. BMI=weight (kg)/height (m)\^2
* Males and females, 18 - 70 years of age

Key Exclusion Criteria:

* Liver transplant recipients
* Documented or suspected hepatocellular carcinoma
* Evidence of decompensated cirrhosis
* History of chronic hepatitis B virus (HBV). Patients with resolved HBV infection may participate
* Current or known history of cancer
* Any gastrointestinal disease or surgical procedure that may impact the absorption of study drug
* Inability to tolerate oral medication
* Poor venous access
* Severe psychiatric disease
* History of chronic pulmonary disease
* History of cardiomyopathy, coronary artery disease (including angina), interventive procedure for coronary artery disease (including angioplasty, stent procedure, or cardiac bypass surgery), ventricular arrhythmia,, or other clinically significant cardiac disease
* History of or current electrocardiogram findings indicative of cardiovascular instability
* Preexisting ophthalmologic disorders considered clinically significant on eye
* History of uncontrolled diabetes mellitus
* Any known contraindication to pegylated interferon alfa-2a or ribavirin not otherwise specified.
* Positive hepatitis B virus surface antigen, HIV-1 or HIV-2 Ab
* Prior exposure to any HCV direct antiviral agent (eg, HCV protease, polymerase, previous nonstructural protein 5A inhibitors)
* Exposure to any investigational drug or placebo
B: Key Inclusion Criteria:

* Patients chronically infected with hepatitis C virus (HCV) genotype 1
* HCV RNA viral load of ≥10\*5\* IU/mL (100,000 IU/mL) at screening
* Treatment naive

Key Exclusion Criteria:

* Women of child-bearing potential
* Cirrhosis
* Coinfection with HIV or hepatitis B virus
C: Inclusion criteria:

1a. For treatment-naïve patients: no prior therapy with interferon, peginterferon, or ribavirin for acute or chronic hepatitis C infection

1b. For treatment-experienced patients: confirmed virological failure during or after combination treatment with an approved dose of alfa-2a or alfa-2b peginterferon combined with ribavirin; such patients must have received at least 12 weeks of therapy with a 90 day washout period prior to screening and must have documentation of medical history prior to enrolment in 1220.2 2. Age 18 years or older 3. Signed informed consent form prior to trial participation 4. Male or female with documented hysterectomy or menopausal female with last menstrual period at least 6 months prior to screening 5. Chronic hepatitis C infection of genotype 1, diagnosed by positive HCV serology test (HCV Ab positive) or detectable HCV RNA at least 6 months prior to screening 6. HCV viral load \>= 100,000 IU/mL at screening 7. TSH and T4 within normal limits or adequately controlled thyroid function 8. Histological evidence within 36 months prior to study enrolment of any degree of chronic necroinflammatory activity or the presence of fibrosis (Ishak Grade 1-4 or Metavir Grade 1-3)

Exclusion criteria:

1. Patients who have been previously treated with at least one dose of any protease inhibitor for acute or chronic hepatitis C infection
2. Evidence of liver disease due to causes other than chronic HCV infection
3. Positive ELISA for HIV-1 or HIV-2
4. Hepatitis B virus (HBV) infection based on presence of Hbs Ag or HBV DNA
5. Any previous liver biopsy consistent with cirrhosis
6. Decompensated liver diseases as evidenced by ascites, portal hypertension, jaundice or hepatic encephalopathy
7. Haemophilia
8. Hemoglobinopathy (e.g., thalassemia major or sickle cell anemia)
9. Severe pre-existing psychiatric disease
10. Poorly controlled diabetes mellitus
11. Ischaemic heart disease
12. Chronic obstructive airway disease
13. Autoimmune disease; including autoimmune hepatitis
14. History of alcohol abuse within the past 12 months
15. Hyperbilirubinemia (conjugated bilirubin) \>1.5x ULN
16. Alkaline phosphatase \>1.5x ULN
17. ALT and AST levels \>= 5 x ULN
18. Hemoglobin \< 12.0 g/dL for women and \< 13.0 g/dL for men
19. White blood cell count \< 2000 cells/mm3
20. Absolute Neutrophil Count \< 1500 cells/mm3
21. Platelet count \< 100,000 cells/mm3
22. Prothrombin time INR (Institutional Normalized Ratio) prolonged to \> 1.5 x ULN
23. Usage of any investigational drug within 30 days prior to enrolment; or the planned usage of an investigational drug during the course of the current study
24. Known hypersensitivity to study drugs
D: Inclusion Criteria:

* Male or female subjects at least 18 years of age.
* HCV seropositive.
* HCV RNA \>10,000 IU/mL at screening.
* HCV Genotype 1. Subjects infected with a non-genotype 1 strain or mixed genotypes are not eligible.
* Treatment naïve (no prior treatment with IFN alfa +/ RBV regimens or investigational anti-HCV agents).
* Liver biopsy within two years (24 months) of Screening with non-cirrhotic fibrosis classification. For those subjects with liver biopsy outside of the time window or for those subjects with no history of liver biopsy, a biopsy must be performed prior to randomization.
* Ultrasound within 6 months of Screening for 1) those subjects with bridging fibrosis or 2) those subjects with AFP \>50 and \<100 ng/mL with no evidence of hepatocellular carcinoma. For those subjects with an ultrasound conducted outside the 6-month time window, an ultrasound must be performed prior to randomization.

Exclusion Criteria:

* Co-infection with either HIV or HBV.
* Evidence of severe or decompensated liver disease.
* Subjects with liver disease unrelated to HCV infection.
* Pre-existing medical condition that makes the subject unsuitable for treatment with pegIFN/RBV therapy per product labeling.
* Laboratory abnormality at Screening that makes the subject unsuitable for treatment with pegIFN/RBV therapy per product labeling.
* Abnormal ECG suggestive of clinically significant cardiac disease or QTc\>450msec.
* History of organ transplant.
* Contraindicated medications being taken by the subject at the time of randomization that must be continued during the study period, including potent CYP3A4 inhibitors, sensitive CYP3A4 substrates, CYP3A4 substrates with narrow therapeutic range and CYP3A4 inducers.
* Active alcohol or substance abuse sufficient, in the Investigator's judgment, to prevent adherence to study medication and/or follow up.
* Pregnant or nursing females.
* Males whose female partner is pregnant.

Answer: D