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Study identifier: NCT03474029 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Assessment of the Safety, Tolerability, and Effectiveness of Rifapentine Given Daily for LTBI

Condition: Latent Tuberculosis  ·  Sponsor: Centers for Disease Control and Prevention

PhasePhase 2/Phase 3
Planned participants3400
Who can joinAll sexes, N/A to no upper limit
Healthy volunteersNo

About this study

This study is conducted to compare the safety and effectiveness of a novel short 6-week regimen of daily rifapentine (6wP, experimental arm) with a comparator arm of 12-16 weeks of rifamycin-based treatment (standard of care, control arm) of latent M. tuberculosis infection (LTBI). This trial is conducted among persons who are at increased risk of progression to tuberculosis (TB) and require treatment of LTBI. The study will be conducted in low, medium and high TB incidence settings that have treatment of LTBI as their standard of care and offer 12-16 week rifamycin-based therapy as standard of care. The hypothesis of this study is that the safety and effectiveness of the experimental treatment (6wP arm) is non-inferior to a comparator arm of 12-16 weeks of rifamycin-based treatment of LTBI (control arm). Participants are enrolled and randomly assigned to one of the two study arms: experimental 6wP or control. The comparator (control) arm's treatment regimens include 12 weeks of once-weekly isoniazid (INH) and rifapentine (3HP), 12 weeks of daily INH and rifampin (3HR), and 16 weeks of daily rifampin (4R). A total of 560 participants per arm (1,120 total) for the evaluation of safety and 1,700 participants per arm (3,400 total) for the evaluation of effectiveness will be enrolled, given treatment as per randomization assignment, and followed for 24 months from the date of enrollment. After completion of data collection, statistical analyses will be conducted to compare pr…

This description comes directly from the study's public registry record.

Talk to the study team

Amber B Robinson, PhD  ·  1-800-CDC-INFO  ·  nkj5@cdc.gov

TBTC Research Administrator  ·  +1 (800)-232-4636  ·  tbtcresearchadmin@cdc.gov

Always discuss trial participation with your own doctor first.

Locations (21)

Denver Health and Hospital AuthorityDenver, Colorado, United StatesRecruiting
George Washington UniversityWashington D.C., District of Columbia, United StatesRecruiting
Washington DC VA Medical CenterWashington D.C., District of Columbia, United StatesRecruiting
New York Harbor Healthcare SystemManhattan, New York, United StatesRecruiting
New York City Bureau of TB ControlNew York, New York, United StatesRecruiting
San Antonio VASan Antonio, Texas, United StatesActive Not Recruiting
Seattle King County Health DepartmentSeattle, Washington, United StatesRecruiting
Liverpool HospitalSydney, AustraliaRecruiting
Paramatta ChestSydney, AustraliaRecruiting
Royal Prince Alfred HospitalSydney, AustraliaRecruiting
National Referral University Hospital for Pneumo-physiologyCotonou, BeninActive Not Recruiting
Calgary TB ClinicCalgary, Alberta, CanadaRecruiting

+ 9 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT03474029