Patient description: A 53-year-old man presents with chronic HCV infection for the past 2 years. His past medical history is only significant for inguinal hernia surgery when he was 20 years old. He is on IFN (100 mg/week) plus RBV (400 mg/day) combination therapy for the past 9 months. Direct antiviral drugs were added to his treatment 6 months ago. His medical record shows previous positive HCV RNA tests as well as positive enzyme immunoassay for anti-HCV-antibodies. The recent biopsy was negative for hepatocellular carcinoma and was only remarkable for chronic inflammation compatible with a chronic viral hepatitis. There is no evidence of alcoholic liver disease, bleeding from esophageal varices, hemochromatosis, autoimmune hepatitis or metabolic liver disease. He is an alert male with no acute distress. His BP: 130/75, HR: 90/min and BMI: 27. His abdomen is soft with no ascites or tenderness. The lower extremities are normal with no edema.

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  HIV Infections Hepatitis C (Groups A and B) Men and women 18 years of age or older Presence of chronic HCV infection, defined by presence of plasma or serum HCV RNA in a participant with HCV antibody for at least 180 days, two documented HCV RNA positive results greater than 180 days apart, or positive HCV RNA with biopsy demonstrating chronic hepatitis. More information on this criterion can be found in the protocol Serum or plasma HCV RNA level 10,000 IU/mL or greater obtained within 42 days prior to study entry Screening HCV genotype 1 performed within 6 months prior to study entry Liver biopsy or HCV FibroSURE™ test within 104 weeks prior to study entry with interpretation consistent with chronic HCV infection. If a liver biopsy HCV FibroSURE™ test had not been performed within 104 weeks prior to study entry, then either a biopsy or HCV FibroSURE™ test must have been obtained prior to enrollment. The cut-off value for the FibroSURE™ test was 0.74, where greater than 0.74 was interpreted as cirrhosis. More information on this criterion can be found in the protocol Alpha feto protein (AFP) levels less than 50. If 50 or greater, they must have had a liver imaging study (e.g., ultrasound, computed tomography [CT] scan, magnetic resonance imaging [MRI] showing no evidence of hepatocellular carcinoma HIV-1 infection. More information on this criterion can be found in the protocol Currently not on any antiretroviral therapy (ART) for at least 4 weeks immediately prior to entry or on stable ART for at least 8 weeks prior to study entry using a dual NRTI backbone PLUS one of the following: EFV, RAL, LPV/RTV 400/100 mg twice daily, ATV/RTV, DRV/RTV 600/100 mg twice daily. Breaks in therapy for a maximum of 14 days were allowed. Dose modifications or changes in drugs during the 8 weeks prior to study entry were permitted unless the change in drug was due to treatment failure. More information on this criterion can be found in the protocol CD4+ T-cell count greater than 200 cells/mm^3 obtained within 42 days prior to study entry  (Groups A and B) Known allergy/sensitivity or any hypersensitivity to components of study drugs or their formulation Evidence of decompensated liver disease manifested by the presence of or history of ascites, variceal bleeding, or hepatic encephalopathy. If hepatic cirrhosis was determined by liver biopsy (Stage 4 Metavir or Stage 5, 6 Ishak) or by imaging, then participants had to be no more than Child-Pugh Class A and have a Child-Pugh-Turcotte (CPT) score of 6 or less. More information on this criterion can be found in the protocol Other known causes of significant liver disease including chronic or acute hepatitis B, acute hepatitis A, hemochromatosis, or homozygote alpha-1 antitrypsin deficiency Infection with any HCV genotype other than genotype 1, or mixed genotype infection Uncontrolled or active depression or other psychiatric disorder such as untreated. Grade 3 psychiatric disorder or Grade 3 disorder not amenable to medical intervention that in the opinion of the site investigator might have precluded tolerability or safety of study requirements. Individuals with suicidal ideation or history of a suicidal attempt in the last 5 years prior to enrollment were excluded History of uncontrolled seizure disorders Serious illness including malignancy, active coronary artery disease within 24 weeks prior to study entry, or other chronic medical conditions that in the opinion of the site investigator may have precluded completion of the protocol Presence of active or acute AIDS-defining opportunistic infections within 12 weeks prior to study entry. More information on this criterion can be found in the protocol History of hemoglobinopathy (e.g., thalassemia) or any other cause of or tendency to hemolysis