Antiviral Efficacy, Pharmacokinetics and Safety of BILN 2061 ZW in Patients With Cirrhosis and Chronic Hepatitis C

Inclusion Criteria: * Female or male sex, age of 18 years or older * Chronic Hepatitis C virus (HCV) infection * Liver biopsy consistent with active HCV infection obtained within the last 36 months. * No previous clinical evidence of decompensated cirrhosis. Present cirrhosis status consistent with grade A, according to Child-Turcotte-Pugh classification, confirmed at screening * No evidence of significant gastroesophageal varices (\> grade 1 or other risk factors) according to fiberoptic endoscopy performed within the last 12 months * No evidence of Hepatocellular carcinoma (HCC) by ultrasound performed at screening * Written informed consent consistent with International Committee on Harmonization (ICH) / Good Clinical Practice (GCP) and local legislation given prior to any study procedures * HCV of genotype I * HCV load greater than 50,000 copies messenger ribonucleic acid (mRNA) per ml serum at screening Exclusion Criteria: * Women of childbearing potential or breastfeeding women. Postmenopausal women less than 6 months after last menses, surgically sterilized or hysterectomised less than 3 months after operation or not having negative serum pregnancy test * Males not using an adequate form of contraception (condom, sterilization at least 6 months post operation) in case their partner is of childbearing potential (criteria see above) and is not using an adequate form of contraception (hormonal contraceptives, oral or injectable/ implantable, intra-uterine device (IUD)) * Any other or additional plausible cause for chronic liver disease, including the presence of other viruses known or suspected to cause hepatitis * Evidence of gastroesophageal varices * Any histological evidence of hepatocytic dysplasia * Following serological constellations: Hepatitis B surface (HBs)-Ag positive OR anti-Hepatitis B core (HBc) positive with anti- HBs negative OR anti-HAV IgM positive OR anti-Human immunodeficiency Virus (HIV) positive * History of abuse of alcohol within the past twelve months * Planned or concurrent usage of any other pharmacological therapy at screening, including any antiviral therapy * Any concurrent infectious disease requiring antimicrobial treatment * History of malignancy (except for previously cured squamous cell or basal cell carcinoma of the skin) * Usage of any investigational drug within thirty (30) days prior to enrolment; or the planned usage of an investigational drug during the course of the current study * Known hypersensitivity to drugs * Inability to comply with the protocol * Prior or present Child´s B or C liver diseases - * Bilirubin - refer to following exclusion criterion * Prothrombin time \< 70% * Albumin \< 3.5 g/dl * Clinical evidence of ascites * Clinical evidence of encephalopathy * Clinically apparent jaundice or a total bilirubin or alkaline phosphatase exceeding 2.0 x upper limit of normal (ULN) at screening * ALT or AST \>= 10 x ULN at screening * A platelet count of less than 80.000 platelets per mm3 at screening * White blood cell count of less than 2,000 cells per mm3 at screening * AFP \> 100 ng/ml * Splenectomy * Positive test for illicit or unprescribed drugs or medications at screening. Positive test for cannabis may be allowed if the investigator assesses this result not as clinically significant * Patients with any clinically significant laboratory abnormalities based on the investigator's medical assessment at screening