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Three Months of Weekly Rifapentine and Isoniazid for M. Tuberculosis Infection — PREVENT TB  

Tuberculosis Clinical Trial

Official title:
TBTC Study 26: Effectiveness and Tolerability of Weekly Rifapentine/Isoniazid for 3 Months Versus Daily Isoniazid for 9 Months for the Treatment of Latent Tuberculosis Infection

Clinical Trial Summary

Open-label, multi-center, Phase III clinical trial to compare the effectiveness and tolerability of a three-month (12-dose) regimen of weekly rifapentine and isoniazid (3RPT/INH) to the effectiveness of a nine-month (270-dose)regimen of daily isoniazid (9INH) to prevent tuberculosis (TB) among high-risk tuberculin skin-test reactors, including children and HIV-infected persons, who require treatment of latent TB infection (LTBI).

Clinical Trial Description

The PRIMARY objective of this open-label Phase III clinical trial is to compare the effectiveness of a three-month (12-dose) regimen of weekly rifapentine and isoniazid (3RPT/INH) to the effectiveness of a nine-month (270-dose) regimen of daily isoniazid (9INH) to prevent tuberculosis (TB) among high-risk tuberculin skin-test reactors, including children and HIV-infected persons, who require treatment of latent TB infection (LTBI). The 3RPT/INH regimen will be given under direct observation and the 9INH regimen will be self-administered. SECONDARY Objectives: - Compare the rates of drug discontinuation due to adverse drug reactions associated with 3RPT/INH and 9INH. - Compare the rates of drug discontinuation for any reason associated with 3RPT/INH and 9INH. - Compare the rates of any grade 3, 4, or 5 drug toxicity associated with 3RPT/INH and 9INH. - Compare treatment completion rates of 3RPT/INH and 9INH. Compare the efficacy (i.e., among persons who complete study-phase therapy) of 3RPT/INH and 9INH. - Compare the effectiveness and tolerability of 3RPT/INH and 9INH in HIV-infected persons. - Compare the effectiveness and tolerability of 3RPT/INH and 9INH in children < 18 years old. - Compare the rates of methadone withdrawal associated with 3RPT/INH and 9INH among persons concomitantly receiving methadone. - Describe patterns of antibiotic resistance among M. tuberculosis isolates in patients who develop TB despite treatment of latent infection. Amendment of the study protocol to allow extension of enrollment to children < 12 years old and HIV-infected persons: For assessment of the primary outcome, development of TB, a sample size of approximately 4,000 persons per arm will be required. To assess tolerability (one of the secondary outcomes) in sub-groups, children less than 12 years old and HIV-infected persons, a sample size of 644 per strata will be required. A sample size of 8,053 patients for the primary outcome was reached on February 15, 2008 (with expected follow-up completion time in 2010), leaving approximately 454 additional young children and 200 HIV-infected persons to be enrolled to achieve the targets of 644 for each group. The additional data on tolerability in those sub-groups will available for analysis in 2013. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00023452
Study type Interventional
Source Centers for Disease Control and Prevention
Contact
Status Completed
Phase Phase 3
Start date June 2001
Completion date September 2013
View Details
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