An Exploratory Study to Evaluate the Kinetics of Viral Load Decline With Ombitasvir/ABT 450/Ritonavir (Ombitasvir/ABT-450/r) and Dasabuvir Therapy With Low Dose Ribavirin (RBV), Full Dose RBV or RBV Add-On in Treatment Naïve Adults With Genotype 1a Chronic Hepatitis C Virus (HCV) Infection
Trial Snapshot
- Phase
- Phase 2
- Status
- Completed
- Sponsor
- Enrollment
- 46
- Primary Endpoint
- Slope of the Second Phase Decline in Plasma HCV Ribonucleic Acid (RNA) Levels During Treatment
Study Overview
Brief Summary
To evaluate the effect of ribavirin on second phase plasma hepatitis C virus (HCV) ribonucleic acid (RNA) decline in participants who receive ombitasvir/ABT-450/ritonavir and dasabuvir with full dose ribavirin, low dose ribavirin or without ribavirin for 2 weeks in treatment-naive HCV genotype (GT) 1a-infected adults.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to 100 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Screening laboratory result indicating HCV genotype 1 (GT1) a infection.
- •Chronic HCV infection.
- •Subjects must be non-cirrhotic.
- •Subjects must be able to understand and adhere to the study visit schedule and all protocol requirements as well as voluntarily sign and date an institutional review board (IRB) approved informed consent.
Exclusion Criteria
- •Women who are pregnant or breastfeeding.
- •Positive test result for hepatitis B surface antigen (HBsAg) or anti-human immunodeficiency virus antibody (HIV Ab) positive immunoassay.
- •Clinically significant abnormalities or co-morbidities, other than HCV infection, that make the subject unsuitable for this study or treatment.
- •Current enrollment in another interventional clinical study. Previous use of any HCV treatments including pegylated interferon (pegIFN), ribavirin, or any direct acting antiviral agent, either investigational or approved, for HCV including protease inhibitors, nucleoside or non-nucleoside polymerase inhibitors, or nonstructural viral protein 5A (NS5A) inhibitors.
- •History or solid organ transplant.
- •Screening laboratory analysis that shows abnormal results.
Arms & Interventions
Arm A: Ribavirin Full Dose for Last 10 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) for 12 weeks and weight-based ribavirin (1000 mg or 1200 mg split BID) for the last 10 weeks.
Intervention: Dasabuvir (Drug)
Arm A: Ribavirin Full Dose for Last 10 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) for 12 weeks and weight-based ribavirin (1000 mg or 1200 mg split BID) for the last 10 weeks.
Intervention: Ombitasvir/ABT-450/Ritonavir (Drug)
Arm A: Ribavirin Full Dose for Last 10 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) for 12 weeks and weight-based ribavirin (1000 mg or 1200 mg split BID) for the last 10 weeks.
Intervention: Ribavirin (RBV) (Drug)
Arm B: Ribavirin Full Dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and weight-based ribavirin (1000 mg or 1200 mg split BID) for 12 weeks.
Intervention: Ombitasvir/ABT-450/Ritonavir (Drug)
Arm B: Ribavirin Full Dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and weight-based ribavirin (1000 mg or 1200 mg split BID) for 12 weeks.
Intervention: Dasabuvir (Drug)
Arm B: Ribavirin Full Dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and weight-based ribavirin (1000 mg or 1200 mg split BID) for 12 weeks.
Intervention: Ribavirin (RBV) (Drug)
Arm C: Ribavirin Low-dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and 600 mg ribavirin once daily for 12 weeks.
Intervention: Ombitasvir/ABT-450/Ritonavir (Drug)
Arm C: Ribavirin Low-dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and 600 mg ribavirin once daily for 12 weeks.
Intervention: Dasabuvir (Drug)
Arm C: Ribavirin Low-dose for 12 Weeks
Participants received ombitasvir/ABT-450/ritonavir 25 mg/150 mg/100 mg once daily (QD) + dasabuvir 250 mg twice daily (BID) and 600 mg ribavirin once daily for 12 weeks.
Intervention: Ribavirin (RBV) (Drug)
Outcomes
Primary Outcomes
Slope of the Second Phase Decline in Plasma HCV Ribonucleic Acid (RNA) Levels During Treatment
Time Frame: From Week 0 to Week 2
HCV viral kinetics in plasma during therapy were modeled through non-linear mixed effect models, including a rapid first phase of initial decline and a slower second phase decline. The slope of the second phase decline was estimated for each treatment arm.
Secondary Outcomes
No secondary outcomes reported