Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized Study of Stopping Treatment at 24 Weeks or Continuing Treatment to 48 Weeks in Treatment-Naïve Subjects With Genotype 1 Chronic Hepatitis C Who Achieve an Extended Rapid Viral Response While Receiving Telaprevir, Peginterferon Alfa2a (Pegasys®) and Ribavirin (Copegus®)
Brief Summary: This study is being conducted to learn more about the safety and effect of telaprevir in combination with peginterferon alfa-2a (PEG-IFN) and ribavirin (RBV) in participants with hepatitis C who have never been treated for their hepatitis C virus (HCV). The study is designed to look at the relative benefits of 24 or 48 weeks of total treatment in people who respond quickly to a telaprevir-based treatment.


Options:
A: Inclusion Criteria

* Has not received any previous treatment with any approved or investigational drug or drug regimen for the treatment of hepatitis C
* Male and female subjects, 18 to 70 years of age, inclusive
* Genotype 1, chronic hepatitis C with detectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA)
* Screening laboratory values, tests, and physical exam within acceptable ranges
* Able and willing to follow contraception requirements
* Able to read and understand, and willing to sign the informed consent form and abide by the study restrictions

Exclusion Criteria

* Subject has any contraindications to Pegasys® or Copegus® therapy
* Evidence of hepatic decompensation in cirrhotic subjects
* History of organ transplant
* History of, or any current medical condition which could impact the safety of the subject in participation in the study
B: Inclusion Criteria:

* Participant must have previously documented CHC genotype 1 infection.
* Participant must have a liver biopsy with histology consistent with CHC and no other etiology.
* Participants with bridging fibrosis or cirrhosis must have an ultrasound within 6 months of the Screening Visit (or between Screening and Day 1) with no findings suspicious for hepatocellular carcinoma (HCC).
* Participant must be \>=18 years of age.
* Participant must weigh between 40 kg and 125 kg.
* Participant and participant's partner(s) must each agree to use acceptable methods of contraception for at least 2 weeks prior to Day 1 and continue until at least 6 months after last dose of study drug, or longer if dictated by local regulations.
* Participants must be willing to give written informed consent.

Exclusion Criteria:

* Coinfection with the human immunodeficiency virus (HIV) or hepatitis B virus (HBsAg positive).
* Participants who received prior treatment for hepatitis C; other than herbal remedies, except those with known hepatotoxicity.
* Treatment with any investigational drug within 30 days of the randomization visit in this study.
* Participation in any other clinical trial within 30 days of randomization or intention to participate in another clinical trial during participation in this study.
* Evidence of decompensated liver disease including, but not limited to, a history or presence of clinical ascites, bleeding varices, or hepatic encephalopathy.
* Diabetic and/or hypertensive participants with clinically significant ocular examination findings: retinopathy, cotton wool spots, optic nerve disorder, retinal hemorrhage, or any other clinically significant abnormality.
* Pre-existing psychiatric condition(s).
* Clinical diagnosis of substance abuse of the specified drugs within the specified timeframes.
* Any known pre-existing medical condition that could interfere with the participant's participation in and completion of the study.
* Evidence of active or suspected malignancy, or a history of malignancy, within the last 5 years (except adequately treated carcinoma in situ and basal cell carcinoma of the skin). Participants under evaluation for malignancy are not eligible.
* 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.
* Any other condition which, in the opinion of a physician, would make the participant unsuitable for enrollment or could interfere with the participant participating in and completing the study.
* Participants who are part of the site personnel directly involved with this study.
* Participants who are family members of the investigational study staff.
* Participants who had life-threatening serious adverse event (SAE) during screening period.
* Protocol-specified hematologic, biochemical, and serologic criteria: 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; Direct bilirubin \>1.5 x upper limit of normal (ULN)
* Serum albumin \< lower limit of normal (LLN)
* Thyroid-stimulating hormone (TSH) \>1.2 x ULN or \<0.8 x LLN of laboratory, with certain exceptions.
* Serum creatinine \>ULN of the laboratory reference.
* Protocol-specified serum glucose concentrations.
* protocol-specified alpha fetoprotein levels.
* Prothrombin time/partial thromboplastin time (PT/PTT) values \>10% above laboratory reference range.
* Anti-nuclear antibodies (ANA) \>1:320.
C: Inclusion Criteria:

* Has not received any previous treatment with any approved or investigational drug or drug regimen for the treatment of hepatitis C
* Male and female subjects, 18 to 70 years of age, inclusive
* Genotype 1, chronic hepatitis C with detectable HCV RNA.
* Screening laboratory values, tests, and physical exam within acceptable ranges
* Able and willing to follow contraception requirements
* Able to read and understand, and willing to sign the informed consent form and abide by the study restrictions.

Exclusion Criteria:

* Subject has any contraindications to Pegasys® or Copegus® therapy
* Evidence of hepatic decompensation in cirrhotic subjects
* History of organ transplant
* History of, or any current medical condition which could impact the safety of the subject in participation in the study
D: Inclusion Criteria:

* Qualifying regimen defined as pegylated interferon alfa-2a plus ribavirin or pegylated interferon alfa-2b plus ribavirin for a minimum of 12 weeks.
* During qualifying regimen, participants must have either a documented undetectable HCV-RNA within 30 days of end of treatment (EOT) and a subsequent detectable HCV-RNA during follow-up or a documented decline in HCV-RNA by \>=2 log10 by Treatment Week 12
* Previously documented CHC genotype 1 infection.
* Liver biopsy with histology consistent with CHC and no other etiology.
* Participants with bridging fibrosis or cirrhosis must have an ultrasound within 6 months of the Screening Visit (or between Screening and Day 1) with no findings suspicious for hepatocellular carcinoma (HCC).
* Participants participating in Schering-Plough Research Institute (SPRI) maintenance protocols P02570 (NCT00049842) or P02569 (NCT00048724) must have completed the study to be eligible for this protocol.
* Participants must be \>=18 years of age.
* Participants must weigh between 40 kg and 125 kg.
* Participants and participant's partner(s) must each agree to use acceptable methods of contraception for at least 2 weeks prior to Day 1 and continue until at least 6 months after last dose of study drug, or longer if dictated by local regulations.
* Participants must be willing to give written informed consent.

Exclusion Criteria:

* Coinfection with the human immunodeficiency virus (HIV) or hepatitis B virus (Hepatitis B Surface Antigen \[HBsAg\] positive).
* Discontinuation of previous interferon or ribavirin regimen for an adverse event (AE) considered by the investigator to be possibly or probably related to ribavirin and/or interferon.
* Treatment with ribavirin within 90 days and any interferon-alpha within 1 month of Screening.
* Treatment for hepatitis C with any investigational medication. Prior treatment with herbal remedies with known hepatotoxicity.
* Treatment with any investigational drug within 30 days of the randomization visit.
* Participation in any other clinical trial within 30 days of randomization or intention to participate in another clinical trial.
* Evidence of decompensated liver disease including, but not limited to, a history or presence of clinical ascites, bleeding varices, or hepatic encephalopathy.
* Diabetic and/or hypertensive participants with clinically significant ocular examination findings.
* Pre-existing psychiatric conditions.
* Clinical diagnosis of substance abuse of the specified drugs within the specified timeframes
* Any known pre-existing medical condition that could interfere with the participant's participation in and completion of the study.
* Evidence of active or suspected malignancy, or a history of malignancy, within the last 5 years (except adequately treated carcinoma in situ and basal cell carcinoma of the skin). Participants under evaluation for malignancy are not eligible.
* 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.
* Any other condition which, in the opinion of a physician, would make the participant unsuitable for enrollment or could interfere with the participant participating in and completing the study.
* Participants who are part of the site personnel directly involved with this study.
* Participants who are family members of the investigational study staff.
* Participants who had life-threatening serious adverse event (SAE) during screening period.
* Protocol-specified hematologic, biochemical, and serologic criteria: 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; Direct bilirubin \>1.5 x upper limit of normal (ULN).
* Serum albumin \<lower limit of normal (LLN)
* Thyroid-stimulating hormone (TSH) \>1.2 x ULN or \<0.8 x LLN of laboratory reference range, with certain exceptions.
* Serum creatinine \>ULN of the laboratory reference.
* Protocol-specified serum glucose concentrations.
* Protocol-specified alpha fetoprotein range.
* Prothrombin Time/Partial Thromboplastin Time (PT/PTT) values \>10% above laboratory reference range.
* Anti-nuclear antibodies (ANA) \>1:320.

Answer: C