- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01180075
Tenofovir, Emtricitabine, Efavirenz and Atazanavir Pharmacokinetics in the Aging HIV-Infected Population
Purpose: To see how growing older changes the amount of HIV drugs in the blood of HIV-infected men and women. Many changes happen in the body as it ages that may affect the way drugs are carried in the blood, broken down or removed from the body. This study will look at the amount of drug in the blood and cells of the immune system for patients taking efavirenz, tenofovir and emtricitabine or atazanavir boosted with ritonavir, tenofovir and emtricitabine.
Participants: The population will comprise of 56 (6 for intensive PK and 50 for sparse sampling) HIV-infected adults currently adhering to an antiretroviral regimen containing efavirenz with tenofovir and emtricitabine and the same number and distribution of HIV-infected adults currently adhering to an antiretroviral regimen containing atazanavir boosted with ritonavir with tenofovir and emtricitabine.
Procedures (methods): This study will be completed at the University of North Carolina at Chapel Hill. There will be four groups of subjects: Efavirenz/tenofovir/emtricitabine Group A, Efavirenz/tenofovir/emtricitabine Group B, Atazanavir/ritonavir/tenofovir/emtricitabine Group A, and Atazanavir/ritonavir/tenofovir/emtricitabine Group B.
The initial six subjects (Group A) for intensive PK analysis for each regimen will be recruited from the the UNC ID Clinic or the Moses Cone Health System Infectious Diseases Clinic, and will be comprised of non-frail subjects not currently receiving interacting drugs. If subjects provide informed consent, timed blood samples will be obtained to determine pharmacokinetic parameters around an observed dose of one of the two study regimens. A whole blood sample will also be collected and stored for potential drug metabolizing enzymes and transporters genotyping in the future. Group A subjects will complete a follow-up visit after their sampling visit.
50 subsequent subjects (Group B) for each regimen will be screened simultaneously, with no more than 10 subjects enrolled for each regimen in Group B prior to the completion and analysis of Group A. These subjects will also be recruited from either site. Group B subjects will have one or two sampling visits with 1 to 4 blood samples obtained at each visit, with a stored sample for future genotyping obtained on one of the visits. Samples will be collected just prior to a dose, at 2 hours, between 4 and 6 hrs, and between 10 and 14 hours after a medication dose. These visits may coincide with the subjects' regularly scheduled visit to the clinic, or be scheduled separately, depending on the preference and availability of the subject.
Study Overview
Status
Conditions
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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North Carolina
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Chapel Hill, North Carolina, United States, 27599
- University of North Carolina at Chapel Hill
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- HIV positive patients
- Able to provide written informed consent
- Able to comply with their treatment regimen and study procedures
- Currently receiving either efavirenz/tenofovir/emtricitabine or atazanavir/ritonavir/tenofovir/emtricitabine as treatment for their HIV infection. Subjects must have been on the regimen for at least 2 weeks
- All women of reproductive potential must have a negative urine pregnancy test
- If participating in sexual activity that could lead to pregnancy, study participant must use at least one reliable method of contraception.
Exclusion Criteria:
- Displaying the fraility phenotype (Group A only)
- Receiving an interacting medication
- Having missed >3 doses of study medication in the past 30 days
- Patients who will not likely remain on the study regimen during the course of study participation.
- Anemia (hemoglobin <10 g/dL)
- Abnormal screening laboratory findings
- Pregnancy
- Breastfeeding
- Any condition that may interfere with follow-up or the ability to take the study medication appropriately.
- Any clinically significant surgical alterations of the alimentary track, that in the opinion of the investigators, alters the absorption pharmacokinetics of the drugs of interest.
Study Plan
How is the study designed?
Design Details
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
TDF/FTC/EFV Intensive Sampling-Group A
Patients receiving TDF/FTC/EFV who undergo intensive pharmacokinetic sampling over 24 hours
|
Patients receiving this drug for clinical care at standard dosages will be enrolled.
Other Names:
Multiple blood draws will be performed in the study, and vary depending on the group.
|
TDF/FTC/ATV/r Intensive Sampling Group A
Patients receiving TDF/FTC/ATV/r who undergo intensive pharmacokinetic sampling over 24 hours
|
Multiple blood draws will be performed in the study, and vary depending on the group.
Patients receiving this drug for clinical care at standard dosages will be enrolled.
Other Names:
Patients receiving this drug for clinical care at 300mg with 100mg ritonavir daily will be enrolled.
Other Names:
Patients receiving this drug for clinical care at 100mg daily with 300mg atazanavir will be enrolled.
Other Names:
|
TDF/FTC/EFV Sparse Sampling Group B
Patients receiving TDF/FTC/EFV who undergo sparse pharmacokinetic sampling on 1 or 2 visits depending on subject's availability
|
Patients receiving this drug for clinical care at standard dosages will be enrolled.
Other Names:
Multiple blood draws will be performed in the study, and vary depending on the group.
|
TDF/FTC/ATV/r Sparse Sampling Group B
Patients receiving TDF/FTC/ATV/r who undergo sparse pharmacokinetic sampling on 1 or 2 visits depending on subject's availability
|
Multiple blood draws will be performed in the study, and vary depending on the group.
Patients receiving this drug for clinical care at standard dosages will be enrolled.
Other Names:
Patients receiving this drug for clinical care at 300mg with 100mg ritonavir daily will be enrolled.
Other Names:
Patients receiving this drug for clinical care at 100mg daily with 300mg atazanavir will be enrolled.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Clearance estimates for each drug, adjusted for age and frailty
Time Frame: From 0, 2, 4-6, and 10-14 hr post-dose blood samples
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From 0, 2, 4-6, and 10-14 hr post-dose blood samples
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Collaborators and Investigators
Investigators
- Principal Investigator: Julie B Dumond, PharmD, University of North Carolina, Chapel Hill
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- RNA Virus Infections
- Virus Diseases
- Infections
- Blood-Borne Infections
- Communicable Diseases
- Sexually Transmitted Diseases, Viral
- Sexually Transmitted Diseases
- Lentivirus Infections
- Retroviridae Infections
- Immunologic Deficiency Syndromes
- Immune System Diseases
- Slow Virus Diseases
- HIV Infections
- Acquired Immunodeficiency Syndrome
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents
- Antiviral Agents
- Reverse Transcriptase Inhibitors
- Nucleic Acid Synthesis Inhibitors
- Enzyme Inhibitors
- Anti-HIV Agents
- Anti-Retroviral Agents
- Protease Inhibitors
- Cytochrome P-450 CYP3A Inhibitors
- Cytochrome P-450 Enzyme Inhibitors
- Cytochrome P-450 Enzyme Inducers
- Cytochrome P-450 CYP3A Inducers
- HIV Protease Inhibitors
- Viral Protease Inhibitors
- Cytochrome P-450 CYP2B6 Inducers
- Cytochrome P-450 CYP2C9 Inhibitors
- Cytochrome P-450 CYP2C19 Inhibitors
- Tenofovir
- Emtricitabine
- Ritonavir
- Atazanavir Sulfate
- Efavirenz
Other Study ID Numbers
- 09-2120
- 1K23AI093156-01A1 (U.S. NIH Grant/Contract)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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