Chronic Hepatitis C Virus Infection MedDRA version: 14.1 Level: LLT Classification code 10008912 Term: Chronic hepatitis C System Organ Class: 10021881 - Infections and infestations
Conditions
Sponsors
Gilead Sciences, Inc.
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Male or female, aged from 18 to 70 years old, inclusive. Where required by local law or regulation, the participation of female subjects may be limited to women of nonchildbearing potential or, if deemed appropriate, to males only in that country. 2. Willing and able to provide written informed consent. 3. Chronic HCV infection for at least 6 months prior to Baseline (Day 1) in subjects currently positive for HCV RNA and anti-HCV antibody. 4. Subjects must have liver biopsy results (performed no more than 2 years prior to screening) indicating the absence of cirrhosis. 5. HCV infection limited to genotype 1a or 1b. 6. Detectable plasma HCV RNA at Screening. 7. BMI between 18 and 36 kg/m2. 8. Eligible subjects must also be HCV treatment naïve, defined as no prior exposure to IFN- a, RBV, or other approved or experimental HCV therapy, and must be eligible to start standard of care therapy with PEG/RBV. 9. QTcF interval (QT corrected using Fridericia’s formula) must be = 450 msec as determined from screening ECG. 10. Subjects must have the following laboratory parameters at screening: ALT and AST = 10 × the upper limit of normal (reference) range (ULN); hemoglobin (Hb) = 12 g/dL; white blood cell count = 2,500 cells/µL; absolute neutrophil count (ANC) = 1,500 cells/mm3; potassium and magnesium within normal limits; TSH not elevated above upper limits of normal. 11. Creatinine clearance (CLcr) = 50 mL/min. 12. Able to comply with the dosing instructions for study drug administration and available to complete the study schedule of assessments. 13. Has not been treated with any investigational drug within 30 days of the screening visit in this study. 14. Of generally good health as determined by the Investigator, based upon physical examination, laboratory parameters, ECG findings, vital signs, and medical history; physical examination must be inclusive of retinal exam (e.g., opthalmoscopic or slit lamp evaluation). 15. Women of childbearing potential (i.e., a non-menopausal female or a female postmenopausal =65 years) yes F.1.3.1 Number of subjects for this age range 24
Exclusion criteria
Exclusion criteria: 1. Pregnant women or women who may wish to become pregnant during the course of the study 2. Male with a female partner who is pregnant or is planning to become pregnant within 7 months of anticipated last dose of RBV. It is the responsibility of the male subject to ensure that his partner (or partners) is not pregnant prior to entry into the study and does not become pregnant during the treatment and for 7 months after the last dose of RBV. 3. Males and females of reproductive potential who are unwilling to use two forms of effective birth control throughout the duration of study treatment and for at least 7 months after the last dose of RBV. One method should include a condom with spermicide for males. 4. Evidence of infection or co-infection with a non-genotype 1 HCV strain 5. Poorly controlled diabetes mellitus (hemoglobin A1c > 9 at Screening or fasting glucose= 150 mg/dL) unless treatment intervention has been reviewed with the Gilead Medical Monitor and improved glucose control is anticipated 6. History of hemoglobinopathy (e.g. thalassemia) 7. History of known retinal disease 8. History of sarcoidosis 9. History of invasive malignancy diagnosed or treated within 5 years (recent localized treatment of squamous or non-invasive basal cell skin cancers is permitted; cervical carcinoma in situ is allowed if appropriately treated prior to screen); subjects under evaluation for malignancy are not eligible. 10. Untreated or significant psychiatric illnesses including severe depression, schizophrenia, psychosis, or a history of a suicide attempt 11. Co-infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV) 12. Chronic use of systemic immunosuppressive agents 13. Presence of autoimmune disorders (e.g. systemic lupus erythematosus, rheumatoid arthritis, psoriasis of greater than mild severity). Subjects with treated hypothyroidism with normal TSH may be enrolled (the medical monitor must be consulted prior to enrollment). 14. Severe chronic obstructive pulmonary disease (e.g., FEV1 50 ng/mL, enrollment is only allowed if results of appropriate diagnostic studies are inconsistent with a diagnosis of hepatocellular tumor 20. Direct (conjugated) bilirubin > ULN 21. Other signs of decompensated liver disease, as indicated by prothrombin time > 1.5 × ULN, platelets < 90,000/mm3 or albumin < 3 g/dL at screening OR current or prior history of clinical hepatic decompensation (e.g., ascites, jaundice, encephalopathy or variceal hemorrhage) 22. Subjects with or a history of clinically-significant illness or any other major medical disorder that may interfere with subject treatment, assessment or compliance with the protocol. 23. Have a history of a primary gastrointestinal disorder that could interfere with the absorption of the study drug or that could interfere with normal gastrointestinal anatomy or motility. 24. Subjects with, or a personal or family history of, acute porphyria. 25. Ongoing alcohol abuse in the judgment of the investigator 26. Have a history of clinically-relevant drug abuse 27. Positive urine scree
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: To evaluate the antiviral efficacy (sustained virologic response [SVR]; defined as undetectable HCV RNA 24 weeks following treatment cessation) of a 3-drug regimen of GS-9451 with peginterferon alfa 2a (PEG) and ribavirin (RBV) followed by response guided PEG/RBV versus a control arm of PEG/RBV therapy for 48 weeks.;Secondary Objective: • To evaluate the safety and tolerability of therapy in each treatment arm • To evaluate the emergence of viral resistance following therapy with GS-9451 when administered with PEG and RBV with and without tegobuvir • To characterize viral dynamics and steady state pharmacokinetics of GS-9451 and tegobuvir when administered with PEG and RBV Exploratory objectives of this study include the following: • Assess genetic variation in the human IL28B gene as a predictor of virologic response in each treatment arm • Through genetic discovery research (i.e. pharmacogenomics) in subjects who provide their additional and specific consent: to identify or validate genetic markers that may be predictive of the natural history of HCV disease, the virologic response to therapy, and the tolerability of drugs used in HCV therapeutics.;Primary end point(s): The primary efficacy endpoint is SVR (HCV RNA undetectable 24 weeks after cessation of therapy).;Timepoint(s) of evaluation of this end point: 24 weeks after cessation of therapy | — |
Secondary
| Measure | Time frame |
|---|---|
| Timepoint(s) of evaluation of this end point: Continuous;Secondary end point(s): • To evaluate the safety and tolerability of therapy in each treatment arm • To evaluate the emergence of viral resistance following therapy with GS-9451 when administered with PEG and RBV with and without tegobuvir • To characterize viral dynamics and steady state pharmacokinetics of GS-9451 and tegobuvir when administered with PEG and RBV | — |
Countries
Austria, Belgium, France, Germany, Netherlands, Poland, United Kingdom, United States
Contacts
Public ContactLegal Rep Contact Person
Gilead Sciences Inc
Outcome results
None listed