TerminatedPhase 2

Drug-Drug Interactions Between Rifapentine and Dolutegravir in HIV/LTBI Co-Infected Individuals

Stopped: Opening of Arm 2 was dependent upon assessment of DTG pharmacokinetics (PK) data from participants in Arm 1. Arm 1 is complete and results are reported. Arm 2 was not conducted based on the Arm 1 PK assessment.

United States, Botswana, Haiti37 participantsStarted 2021-02-27

Plain-language summary

This study evaluated the potential drug-drug interactions between dolutegravir (DTG) and steady state rifapentine (RPT) when RPT was given with isoniazid (INH) daily for 4 weeks (1HP) as part of treatment for latent TB infection (LTBI) in HIV-1 and LTBI co-infected individuals.

Who can participate

Age range

18 Years – 65 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Ability and willingness of participant or legal guardian/representative to provide informed consent. * Weight ≥40 kg and a body mass index (BMI) of greater than 18.5 kg/m\^2. * Documentation of HIV-1 infection status, as below: * HIV-1 infection, documented by any licensed rapid HIV test or HIV-1 E/CIA test kit at any time prior to entry and confirmed by a licensed Western blot or a second antibody test by a method other than the initial rapid HIV and/or E/CIA, or by HIV-1 antigen or plasma HIV-1 RNA viral load. Two or more HIV-1 RNA viral loads of \>1,000 copies/mL are also acceptable as documentation of HIV-1 infection. * Note A: The term "licensed" refers to a US Food and Drug Administration (FDA)-approved kit, which is required for all investigational new drug (IND) studies, or for sites that are located in countries other than the United States, a kit that has been certified or licensed by an oversight body within that country and validated internally. Non-US sites are encouraged to use US FDA-approved methods for IND studies. * Note B: World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) guidelines mandate that confirmation of the initial test result must use a test that is different from the one used for the initial assessment. A reactive initial rapid test should be confirmed by either another type of rapid assay or an E/CIA that is based on a different antigen preparation and/or different test principle (e…

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

DTG PK Parameter Maximum Plasma Concentration (Cmax) Determined Based on DTG Levels From Individual Participants in Arm 1 by Visit Day

Timeframe: Intensive DTG PK samples at pre-dose, 1h, 2h, 4h, 8h, 12h, 13h, 14h, 23h and 24h post-dose at days 0 and 28

DTG PK Parameter Area Under the Concentration Time Curve (AUC0-24) Calculated Based on Intensive PK Samples Obtained From Individual Participants Enrolled in Arm 1 by Visit Day

Timeframe: Intensive DTG PK samples at pre-dose, 1h, 2h, 4h, 8h, 12h, 13h, 14h, 23h and 24h post-dose at days 0 and 28

DTG PK Parameter Minimum Plasma Concentration (Cmin) Determined Based on DTG Levels From Individual Participants in Arm 1 by Visit Day

Timeframe: Intensive DTG PK samples at pre-dose, 1h, 2h, 4h, 8h, 12h, 13h, 14h, 23h and 24h post-dose at days 0 and 28

DTG PK Parameter Ctrough Determined Based on DTG Levels From Individual Participants in Arm 1 at Day 28

Timeframe: Intensive DTG PK samples at pre-dose, 1h, 2h, 4h, 8h, 12h, 13h, 14h, 23h and 24h post-dose at day 28

DTG PK Parameter Maximum Plasma Concentration (Cmax) Determined Based on DTG Levels From Individual Participants in Arm 2 by Visit Day

Timeframe: Intensive DTG PK samples at pre-dose, 1h, 2h, 4h, 8h, 12h, 23h and 24h post-dose at days 0 and 28

Trial details

NCT IDNCT04272242

SponsorNational Institute of Allergy and Infectious Diseases (NIAID)

Sponsor typeNIH

Study typeINTERVENTIONAL

Primary completion2021-12-15

Results submitted2024-04-11

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