A Drug-drug Interaction Study Between Daclatasvir and Atazanavir/Ritonavir or Atazanavir/Cobicistat (DATE-4)
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|ClinicalTrials.gov Identifier: NCT02565888|
Recruitment Status : Completed
First Posted : October 1, 2015
Last Update Posted : January 26, 2016
|Condition or disease||Intervention/treatment||Phase|
|Hepatitis C HIV||Drug: Daclatasvir Drug: Atazanavir Drug: Ritonavir Drug: Cobicistat||Phase 1|
Approximately 20-25% of the total number of HIV-infected patients is co-infected with HCV which translates to 6-8 million persons worldwide. Combined treatment of HIV and HCV is complicated by the risk of drug-drug interactions as both the direct acting antiviral agents (DAAs) for HCV as the antiretroviral agents for HIV are substrates of cytochrome P450 (CYP450) or various membrane transporters, and also have the capacity to influence these systems. A careful selection of the appropriate regimens and if needed adjusted doses is key for optimal treatment of both viral infections.
Daclatasvir is a recently approved anti-HCV agent that is a CYP3A4 substrate but does not affect CYP450 itself. It is also a moderate inhibitor of various membrane transporters such as organic anion-transporting polypeptide (OATP1B1), P-glycoprotein (P-gP), and organic cation transporters (OCT2).
Atazanavir/ritonavir is one of the preferred antiretroviral agents in all international guidelines. Ritonavir is used as a boosting agents based on its inhibitory effects on CYP3A. This also inhibits CYP3A-mediated metabolism of daclatasvir and when atazanavir/ritonavir is combined with daclatasvir, it is recommended to reduce the dose of daclatasvir from 60mg QD to 30mg QD.
Cobicistat has recently been approved as an alternative booster of atazanavir at a dose of 150mg QD. It is expected that cobicistat will inhibit CYP3A mediated metabolism of daclatasvir in a similar manner as ritonavir does, but there are no clinical data to support this. As cobicistat lacks some of the adverse events associated with ritonavir use, the use of cobicistat, including as a booster of atazanavir, is likely to increase.
This study aims to provide the evidence that 150mg of cobicistat will have the same effect on the pharmacokinetics of daclatasvir 30mg QD as 100mg of ritonavir, when given together with atazanavir 300mg.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||16 participants|
|Intervention Model:||Crossover Assignment|
|Masking:||None (Open Label)|
|Official Title:||A Drug-drug Interaction Study Between the Novel Anti-HCV Agent Daclatasvir and the Antiretroviral Agents Atazanavir/Ritonavir or Atazanavir/Cobicistat in Healthy Volunteers|
|Study Start Date :||November 2015|
|Actual Primary Completion Date :||January 2016|
|Actual Study Completion Date :||January 2016|
Active Comparator: Treatment A
Daclatasvir 30 mg QD film-coated tablet + atazanavir 300mg QD hard capsule + ritonavir 100mg QD from film-coated tablet for 10 days.
Other Name: Daklinza
Other Name: Reyataz
Other Name: Norvir
Experimental: Treatment B
Daclatasvir 30 mg QD film-coated tablet + atazanavir 300mg QD hard capsule + cobicistat 150mg QD from film-coated tablet for 10 days.
Other Name: Daklinza
Other Name: Reyataz
Other Name: Tybost
- AUC [ Time Frame: up to 24 hours after administration ]
- Adverse events [ Time Frame: 4 weeks ]adverse events will be collected up to 4 weeks in total (entire study)
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02565888
|CRCN, Radboud University Medical Center|
|Principal Investigator:||David Burger, PharmD, PhD||Radboud University|