Comparing two treatment regimens for tuberculosis prevention in people living with HIV

A Randomized Trial Comparing Treatment Completion of Daily Rifapentine & Isoniazid for One Month (1HP) To Weekly Rifapentine & Isoniazid For 3 Months (3HP) In Persons Living With HIV and in HIV-negative Household Contacts of Recently Diagnosed Tuberculosis Patients, The "One To Three" Trial

Phase 4 Interventional The Aurum Institute NPC · NCT05118490

This study is testing two different ways to prevent tuberculosis in people living with HIV and their family members to see which treatment works better.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment1000 (estimated)
Ages13 Years and up
SexAll
SponsorThe Aurum Institute NPC Academic / other
Locations4 sites (Pune, Maharashtra and 3 other locations)
Trial IDNCT05118490 on ClinicalTrials.gov

What this trial studies

This clinical trial is a multicenter, randomized, open-label phase IV trial that compares two different regimens of tuberculosis preventive treatment in HIV-positive individuals and HIV-negative household contacts of tuberculosis patients. Participants will be stratified based on their HIV status and will receive either daily rifapentine and isoniazid for one month or weekly high-dose rifapentine and isoniazid for three months. The study will monitor participants for adherence, adverse events, and overall health through regular clinic visits and lab tests. The goal is to determine which regimen is more effective in completing treatment.

Who should consider this trial

Good fit: Ideal candidates for this study are HIV-positive adolescents and adults aged 13 years and older who are on antiretroviral therapy and do not have active tuberculosis.

Not a fit: Patients with confirmed or suspected active tuberculosis or those with certain contraindications to the study medications will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective and convenient tuberculosis preventive treatment option for individuals living with HIV.

How similar studies have performed: Other studies have shown success with similar tuberculosis preventive treatment approaches, indicating potential for positive outcomes in this trial.

Eligibility criteria

Show full inclusion / exclusion criteria
Group 1: HIV-positive adolescents and adults in South Africa and India

Inclusion criteria:

1. Age ≥ 13 years
2. Weight \> 30 kg
3. HIV-seropositive
4. HIV viral load \<400 copies/mL, defined as "virally suppressed," on an EFV or DTG-based ART regimen (see Section 3.6.2)
5. Candidates must meet WHO criteria for receiving TPT

Exclusion criteria:

1. Confirmed or suspected TB disease (evidenced by symptoms and/or clinical exam findings and/or chest radiographic findings suggestive of TB, positive mycobacterial culture or molecular TB testing or currently on TB treatment for active TB disease)
2. Likely to move from the study area during the study period
3. Known recent exposure to a TB case with resistance to isoniazid or rifampicin.
4. Previous treatment for active or latent TB for more than 30 days within the past 2 years
5. On nevirapine, etravirine, rilpivirine, PI-based, or raltegravir-containing ART regimens
6. Known sensitivity or intolerance to isoniazid or rifamycins
7. Suspected acute hepatitis or known chronic or unstable liver disease\^
8. ALT \> 3 times the upper limit of normal (ULN)
9. Total bilirubin \> 2.5 times the ULN
10. Pregnancy or breastfeeding Females of childbearing potential who are unable or unwilling to use two forms of contraception\*\*
11. On prohibited medications (see Appendix I)

Group 2: HIV-negative household contacts of an adult with confirmed pulmonary TB in Mozambique and Indonesia

Inclusion criteria:

1. Age ≥ 13 years
2. Weight \> 30 kg
3. HIV-negative
4. Household contact of an adult with confirmed rifampicin-sensitive pulmonary TB
5. Candidates must meet WHO criteria for receiving TPT

Exclusion criteria:

1. Confirmed or suspected TB disease (evidenced by symptoms and/or clinical exam findings and/or chest radiographic findings suggestive of TB, positive mycobacterial culture or molecular TB testing or currently on TB treatment for active TB disease)
2. Likely to move from the study area during the study period
3. Known exposure to TB cases with resistance to isoniazid or rifampicin in the source case
4. Previous treatment for active or latent TB for \>30 days within the past 2 years
5. Known sensitivity or intolerance to isoniazid or rifamycins
6. Suspected acute hepatitis or known chronic or unstable liver disease\^
7. ALT \> 3 times the upper limit of normal (ULN)
8. Total bilirubin \> 2.5 times the ULN
9. Pregnancy or breastfeeding Females of childbearing potential who are unable or unwilling to use two forms of contraception\*\*
10. On prohibited medications

Where this trial is running

Pune, Maharashtra and 3 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HIV SeropositivityTuberculosisHousehold ContactTuberculosis preventive treatmentrifapentineHIV uninfected
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.