- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03033017
Predictors of Time to Viremia With an Analytic Treatment Interruption
This is a two-center study of 30 HIV-infected participants who have been on antiretroviral therapy (ART) for at least two years.
Participants will be asked to undergo LN and GALT biopsies both before and after a closely monitored analytic treatment interruption (ATI).
Study Overview
Detailed Description
The HIV field has made a dramatic shift to an emphasis on finding a cure for HIV.
However, there is no agreed upon test of cure, or even what the definition of a cure might be. The investigator believes the most reliable test of cure will be an analytic treatment interruption (ATI) with time to viremia as a standard measure of the impact of an intervention on the degree to which the reservoir has been depleted. This is rational as modeling studies utilizing ATI data point to reservoir size as an important predictor of time to viremia(1) and other studies have shown that levels of HIV DNA(2) and cell associated HIV RNA(3) prior to starting antiretroviral therapy (ART) are associated with time-to-rebound. However, these studies used a limited sampling strategy to determine when viremia rebounded and it is likely that greater sensitivity in measures of time-to rebound will be needed to accurately assess the impact of an intervention. The investigators have tested an ATI strategy where plasma HIV is sampled three times each week and ART is resumed once the virus becomes detectable. In this small, pilot study, the investigators sampled lymph nodes, GALT, plasma, and PBMC before, during, and after the ATI and found the time-to-rebound was 14 days (range 5 to 30 days) and that total years of ART exposure was associated with the time-to-rebound (4). The investigators propose a similar study that includes more intensive blood and lymphoid tissue sampling to identify factors that predict time to-rebound to provide a necessary foundation for future studies that utilize a treatment interruption as a test of efficacy for curative interventions.
Study Type
Contacts and Locations
Study Locations
-
-
California
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San Francisco, California, United States
- University of California
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Minnesota
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Minneapolis, Minnesota, United States, 55455
- University of Minnesota
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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-infected individuals who have been on ART therapy for at least two years
- Male or Female, aged 18 years or older
- Documented evidence of CD4+ T cell count ≥ 300 cells/µl for 12 months prior to study entry
- BMI ≤ 30 or evidence by ultrasound or physical exam of peripheral inguinal lymph node(s) that is/are surgically accessible
- Documented plasma HIV RNA levels below level of quantification <20 to <40 copies RNA/mL depending on the assay) ≥ 24 months (a single measurement above the level of detection but < 200 copies/ml will be allowed)
- Willing to switch to an ART regimen consisting of dolutegravir and either tenofovir/emtricitabine or abacavir/lamivudine to avoid drugs with a long-half life that would expose the participant to a period of mono-therapy when the drugs are stopped.
- Women of child bearing potential and men with partners of child bearing potential must agree to use effective contraception during protocol
- Able to provide voluntary written consent.
Exclusion Criteria
- ART was initiated during acute infection (within first 6 months of infection)
- Planning or current pregnancy or breastfeeding
- History and/or presence of any clinically significant disease or disorder, such as cardiovascular, pulmonary, renal, hepatic, neurological, gastrointestinal and psychiatric/mental disease/disorder, which, in the opinion of the enrolling physician, may put the participant at risk because of participation in the study, influence the results of the study, or affect the participant's ability to participate in the study.
- Inability to comply with study procedures per enrolling physician discretion.
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
HIV-infected on antiretroviral therapy 2 years
HIV-infected participants who have been on antiretroviral therapy (ART) for at least two years.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time to viremia
Time Frame: Baseline to 14 days
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Time to viremia
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Baseline to 14 days
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Change in vRNA+ and vDNA+ cells
Time Frame: Baseline to 14 days
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measured by in situ hybridization and using quantitative image analysis to determine the frequency of + cell/gram lymphoid tissue
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Baseline to 14 days
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SCA (Single Copy Assay)
Time Frame: Baseline to 14 days
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performed as described in the protocol and reported as number of cells/ml plasma.
|
Baseline to 14 days
|
Change in markers of immune activation
Time Frame: Baseline to 14 days
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All measurements are the same IL1B, TNF, IL4, IL13, IL17, IL21,IL22, IL6, IL10
|
Baseline to 14 days
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Change in CD4
Time Frame: Baseline to 14 days
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Baseline to 14 days
|
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Change in CD4/CD8 ratio
Time Frame: Baseline to 14 days
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Baseline to 14 days
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Polyadenylation-RT-ddPCR assay for total transcripts (TAR)
Time Frame: Baseline to 14 days
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transcripts/million cells
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Baseline to 14 days
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ddPCR assays for read-through, elongated, polyadenylated, and multiply-spliced (Tat-Rev) transcripts
Time Frame: Baseline to 14 days
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reported as transcripts/million cells
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Baseline to 14 days
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Timothy Schacker, MD, University of Minnesota
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 24777
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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