Please select the eligibility criteria that correspond to the clinical trial below.
Title: The ATOMIC Study: A Multicenter, Open-label, Randomized, Duration Finding Study to Investigate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics Following Oral Administration of PSI-7977 in Combination With Pegylated Interferon and Ribavirin in Treatment-Naive Patients With Chronic HCV Infection Genotype 1,4, 5, or 6
Brief Summary: The purpose of this study is to assess the safety, tolerability, and efficacy of sofosbuvir (GS-7977; PSI-7977) administered in combination with pegylated interferon and ribavirin (PEG/RBV) in treatment-naive patients with HCV genotypes 1,4,5,6, or indeterminate genotype.


Options:
A: Inclusion criteria:

* Has chronic HCV genotype 1 infection
* Is treatment-experienced
* For the non-cirrhotic population, has had a liver biopsy without evidence of cirrhosis and hepatocellular carcinoma; for the cirrhotic population, has had a liver biopsy with evidence of cirrhosis and without evidence of hepatocellular carcinoma.

Exclusion criteria:

* Has not tolerated previous course peg-IFN and RBV
* Is unlikely to tolerate at least 24 weeks of continuous therapy with Peg-IFN and RBV
* Is co-infected with Human Immunodeficiency Virus (HIV) and/or hepatitis B
* Consumes excessive amounts of alcohol
* Has a history of drug or alcohol abuse
* If female, participant is pregnant or breastfeeding
* Has been in a clinical trail with an investigational drug in the last 30 days
* Has used IFN/Peg-IFN and RBV in the last 3 months
B: Inclusion Criteria:

* Males and females with Chronic Hepatitis C (HCV) Genotype 1,4,5,6, or indeterminate
* Naive to previous HCV treatment

Exclusion Criteria:

* Positive for HBsAg, anti-HBc IgM Ab, or anti-HIV Ab
* History of any other clinically significant chronic liver disease
C: Inclusion Criteria:

* Genotype 1 hepatitis C infection (confirmed at screening)
* Participant has not received any prior treatment for hepatitis C
* Participant must have had a liver biopsy within 3 years before screening (or between the screening and baseline visit) showing chronic hepatitis C infection
* Must agree to use 2 forms of effective contraception throughout study (both males and females)

Exclusion Criteria:

* Infection with HIV or non genotype 1 hepatitis C
* Liver disease not related to hepatitic C infection
* Hepatic decompensation
* Significant laboratory abnormalities or other active diseases
* Pregnant or planning to become pregnant
D: Inclusion Criteria: - Documented chronic genotype 1 Hepatitis C infection - Able to comply with the protocol requirements and having good accessible veins - Amount of virus in the blood (HCV RNA) \>= 10.000 IU/mL, at screening - Bodyweight as defined by a Quetelet Index (Body Mass Index \[BMI\]) between 18 and 32 kg/m², extremes included Exclusion Criteria: - Evidence of liver cirrhosis or decompensated liver disease or any other form of non-viral hepatitis - Participants receiving or having received treatment with polymerase inhibitor or protease inhibitor, or Standard of Care therapy with COPEGUS (ribavirin) and PEGASYS (peginterferon alpha-2a) for treatment for HCV during the 6 months before screening - Male participants with female partners of childbearing potential not agreeing to use a reliable birth control method, Female, except if postmenopausal for over 2 years, or posthysterectomy, or post-tubal ligation (without reversal operation) - History or evidence of current use of alcohol, barbiturate, amphetamine, recreational or narcotic drug use, which would compromise the participant 's safety and/or compliance. A positive urine drug test at screening. Urine will be tested to check the current use of amphetamines, cocaine, and opioids (with the exclusion of methadone) - Participants having at least one lab toxicity that is found to be clinically significant - Participants co-infected with HIV, or Hepatitis A or B, or hepatitis B surface antigen, or active tuberculosis at screening, participants with prolonged QTc (\>480 ms) value or any cardiac disease at screening, or any active clinically significant disease (e.g., cardiac dysfunction, cardio(myo)pathy, cardiac insufficiency), or medical history or physical examination findings during screening that, in the Investigator's opinion, would compromise the outcome of the trial - Participants having uncontrolled/unstable diabetes, epilepsy, a manifest psychiatric disease, non-stable methadone (or equivalent drug) use or participants having any other unstable disease, participants enrolled in another clinical trial within 90 days prior to screening

Answer: B