Ombitasvir/ABT-450 (Paritaprevir)/Ritonavir With Dasabuvir and Ribavirin (RBV) in Treatment Naive and Treatment Experienced Genotype 1a Hepatitis C Virus Infected Adults

Study Overview
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Brief Summary
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A study to evaluate immune restoration following removal of viral antigen in non-cirrhotic hepatitis C virus (HCV) genotype (GT) 1a treatment-naïve and pegylated-interferon (pegIFN)/ribavirin (RBV) treatment-experienced adults receiving treatment with ombitasvir/paritaprevir/ritonavir and dasabuvir coadministered with ribavirin (RBV) for 12 weeks.

Detailed Description
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A study to evaluate the role of ombitasvir/paritaprevir/ritonavir and dasabuvir coadministered with RBV treatment leading to sustained virologic response 12 weeks post-dosing (SVR12) on the changes from baseline in IFN-stimulated gene (ISG) expression in peripheral blood mononucleated cells (PBMCs) in HCV GT 1a-infected adult participants.

Official Title
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An Exploratory Study to Evaluate Immune Restoration Following Removal of Viral Antigen in Treatment-Naïve and Treatment-Experienced Adults With Genotype (GT) 1a Chronic Hepatitis C Virus (HCV) Infection Administered Ombitasvir/ ABT-450/Ritonavir With Dasabuvir and Ribavirin (RBV) for 12 Weeks

Conditions
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Chronic Hepatitis C, Hepatitis C (HCV), Hepatitis C Genotype 1a

Intervention / Treatment
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* Drug: ombitasvir/paritaprevir/ritonavir
* Drug: dasabuvir
* Drug: ribavirin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Screening laboratory result indicating hepatitis C viral (HCV) genotype (GT) 1a infection. Chronic HCV infection. Participants must be non-cirrhotic. Participants must be treatment-naïve or have documentation that they were adherent to prior pegIFN/RBV combination therapy and meet the criteria of prior pegylated-interferon (pegIFN)/ribavirin (RBV) treatment failure. Participants must meet specific human leukocyte antigen (HLA) allele requirements. 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 enrollment in this study, prior or current use of any investigational or commercially available anti-HCV agents other than pegIFN or RBV (including previous exposure to paritaprevir, ombitasvir, or dasabuvir), or receipt of any investigational product within 6 weeks prior to study drug administration. History of solid organ transplant. Screening laboratory analysis that shows abnormal results.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ombitasvir/paritaprevir/ritonavir + dasabuvir + RBV<br>Ombitasvir/paritaprevir/ritonavir (25 mg/150 mg/100 mg once daily [QD]) + dasabuvir (250 mg twice daily [BID]) + weight based Ribavirin (RBV; dosed 1,000 or 1,200 mg daily divided BID) | Drug: ombitasvir/paritaprevir/ritonavir<br>* ombitasvir/ABT-450/ritonavir tablets<br>* Other names: ABT-267/ABT-450/ritonavir;Drug: dasabuvir<br>* dasabuvir tablets<br>* Other names: ABT-333;Drug: ribavirin<br>* ribavirin tablets<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Interferon (IFN)-Stimulated Genes (ISG) Expression in Peripheral Blood Mononucleated Cells (PBMCs) for Participants Achieving SVR12 | The changes from week 0 to post-treatment (PT) week 12 in key ISG expression in PBMCs for participants achieving sustained virologic response 12 weeks PT (SVR12) where SVR12 was defined as hepatitis C virus ribonucleic acid (HCV RNA) level less than the lower limit of quantification (<LLOQ) 12 weeks after the last dose of study drug. For each key ISG, fold change was defined as the ratio of the difference between PT Week 12 and baseline expressions over the baseline expression. | Week 0 to Post-Treatment Week 12 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Treatment naive, Interferon free, HCV, Chronic Hepatitis C, Hepatitis C Genotype 1a, Hepatitis C, pegylated-interferon (pegIFN)/ribavirin (RBV) experienced