E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Chronic Genotype 2 or 3 HCV Infection |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10019744 |
E.1.2 | Term | Hepatitis C |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10008912 |
E.1.2 | Term | Chronic hepatitis C |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objectives of this study are:
• To determine the efficacy of GS-7977 + RBV as measured by the proportion of subjects with sustained viral response at 12 weeks after discontinuation of therapy (SVR12).
• To evaluate the safety and tolerability of GS-7977 + RBV as assessed by review of the accumulated safety data. |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives of this study are:
• To determine the proportion of subjects who attain SVR at 4 and 24 weeks after discontinuation of therapy (SVR4 and SVR24)
• To evaluate the kinetics of circulating HCV RNA during and after treatment discontinuation
• To evaluate the emergence of viral resistance to GS-7977 during and after treatment discontinuation |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Willing and able to provide written informed consent
2. HCV Genotype 2 or 3
3. Subject must have participated in a prior study of GS-7977 (PSI-7977)
4. HCV RNA >LLOQ
5. Screening ECG without clinically significant abnormalities
6. Subjects must have a number of laboratory parameters within defined ranges at screening
7. A female subject is eligible to enter the study if it is confirmed that she is:
a) Not pregnant or nursing
b) Of non-childbearing potential
c) Of childbearing potential but with a negative serum pregnancy test at screening and a negative urine pregnancy test on the Baseline/Day 1 visit prior to randomization and agree to one of the described forms of contraception during the course of the study and up to 7 months following cessation of Ribavirin therapy.
8. All male study participants must agree to consistently and correctly use a condom while their female partner agrees to use 1 of the methods of birth control listed in the protocol from the date of screening until 7 months after their last dose of RBV.
9. Male subjects must agree to refrain from sperm donation for at least 7 months after the last dose of RBV.
10. Subject must be of generally good health as determined by the Investigator.
11. Subject must be able to comply with the dosing instructions for study drug administration and able to complete the study schedule of assessments. |
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E.4 | Principal exclusion criteria |
1. Pregnant or nursing female or male with pregnant female partner
2. Current or prior history of clinical hepatic decompensation (e.g., ascites, jaundice, encephalopathy or variceal hemorrhage).
3. Infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV)
4. Chronic use of systemically administered immunosuppressive agents (e.g., prednisone equivalent > 10 mg/day)
5. Active substance abuse which, in the opinion of the investigator, would make the candidate inappropriate for participation in this study.
6. Use of any prohibited concomitant medications as described in Section 5.6 within 28 days of the Baseline/Day 1 visit |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary efficacy endpoint is SVR12 (HCV RNA <LLOQ 12 weeks after discontinuation of therapy) in the FAS population.
The primary safety endpoint is any AE leading to permanent discontinuation of study drug(s). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Efficacy endpoint: 12 weeks after cessation of therapy.
Safety endpoint: throughout the duration of therapy. |
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E.5.2 | Secondary end point(s) |
Secondary efficacy endpoints include the proportion of subjects with: HCV RNA < LLOQ at 4 and 24 weeks after discontinuation of therapy (SVR4 and SVR24); viral breakthrough; and relapse. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
4 and 24 weeks after the cessation of therapy. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 80 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Austria |
Estonia |
France |
Italy |
Netherlands |
New Zealand |
Poland |
Spain |
Sweden |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 7 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 7 |
E.8.9.2 | In all countries concerned by the trial days | 0 |