The purpose of this study is to identify at least 1 dose of daclatasvir that is safe, well tolerated, and efficacious when combined with peginterferon-alfa and ribavirin for the treatment of hepatitis C virus genotype 1 in chronically infected patients who are treatment-naïve and nonresponsive to the standard of care
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
51
Tablets, Oral, 10 mg, daily, 24-48 weeks
Tablets, Oral, 60 mg, daily, 24-48 weeks
Tablets, Oral, 0 mg, daily, 48 weeks
Local Institution
Hiroshima, Hiroshima, Japan
Local Institution
Sapporo, Hokkaido, Japan
Local Institution
Kawasaki-Shi, Kanagawa, Japan
Local Institution
Suita-Shi, Osaka, Japan
Percentage of Participants With Extended Rapid Virologic Response (eRVR)
eRVR was defined as undetectable hepatitis C virus (HCV) RNA (ie, HCV RNA \<15 IU/mL, the lower limit of detection, target not detected) at both Weeks 4 and 12. HCV RNA levels were measured by Tobas TaqMan HCV Auto from the central laboratory.
Time frame: At Weeks 4 and 12 on treatment
Percentage of Participants With Rapid Virologic Response (RVR)
RVR was defined as undetectable hepatitis C virus (HCV) RNA (ie, HCV RNA \<15 IU/mL, the lower limit of detection, target not detected) at Week 4. HCV RNA levels were measured by CobasTaqMan HCV Auto from the central laboratory .
Time frame: At Week 4 on treatment
Percentage of Participants With Complete Early Virologic Response (cEVR)
cEVR was defined as undetectable hepatitis C virus (HCV) RNA (ie, HCV RNA \<15 IU/mL, the lower limit of detection, target not detected) at Week 12 on treatment. HCV RNA levels were measured by Cobas TaqMan HCV Auto from the central laboratory
Time frame: At Week 12 on treatment
Percentage of Participants With a Sustained Virologic Response (SVR) at Weeks 4, 12, and 24
SVR at follow-up Week 4 (SVR4), follow-up Week 12 (SVR12), and follow-up Week 24 (SVR24) is defined as undetectable hepatitis C virus (HCV) RNA (ie, HCV RNA \<15 IU/mL, the lower limit of detection, target not detected) at each of these timepoints. HCV RNA levels were measured by Cobas TaqMan HCV Auto from the central laboratory .
Time frame: Follow-up Weeks 4, 12, and 24
Percentage of Participants With Virologic Failure
Virologic failure is defined by the following 6 categories: 1.Virologic breakthrough, defined as confirmed \>1 log10 increase in hepatitis C virus (HCV) RNA over nadir or confirmed HCV RNA ≥limit of quantitation (LOQ) after confirmed undetectable HCV RNA while on treatment. 2. \<1 log10 decrease in HCV RNA from baseline at Week 4 of treatment. 3. Failure to achieve early virologic response, defined as \<2 log10 decrease in HCV RNA from baseline at Week 12 of treatment. 4. Detectable HCV RNA at Week 12, and HCV RNA ≥LOQ at Week 24 of treatment. 5. Detectable HCV RNA at end of treatment (including early discontinuation). 6 Relapse, defined as detectable HCV RNA during follow-up after undetectable HCV RNA levels at end of treatment.
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Syringe, Subcutaneous, 180µg, weekly, 24-48 weeks
Capsules, Oral, 600 to 1000 mg based on weight, daily, 24-48 weeks
Local Institution
Iruma-Gun, Saitama, Japan
Local Institution
Minato-Ku, Tokyo, Japan
Time frame: From on-treatment Week 1 to Follow-up Week 24