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NCT06192160SuspendedPhase 2

Trial of Novel Regimens for the Treatment of Pulmonary Tuberculosis

A Phase 2 Randomized, Adaptive, Dose-Ranging, Open-Label Trial of Novel Regimens for the Treatment of Pulmonary Tuberculosis

Source: ClinicalTrials.gov · Last updated 2 Nov 2026

Brief summary (registry, in English)

A5409/RAD-TB is an adaptive Phase 2 randomized, controlled, open-label, dose-ranging, platform protocol to evaluate the safety and efficacy of multidrug regimens for the treatment of adults with drug-susceptible pulmonary tuberculosis (TB). A5409 hypothesizes that novel regimens for the treatment of pulmonary tuberculosis will result in superior early efficacy, as determined by longitudinal mycobacteria growth indicator tube (MGIT) liquid culture time to positivity (TTP) measurements over the first 6 weeks of treatment, and will have acceptable safety and tolerability over 8 weeks of treatment relative to standard of care [(SOC) isoniazid/rifampicin/pyrazinamide/ethambutol (HRZE)]. The study will run for 52 weeks, inclusive of 26 weeks of TB treatment comprised of 8 weeks of study treatment (experimental or SOC, based on treatment arm assignment) followed by 18 weeks of SOC continuation phase treatment with 346 participants in Wave 1: 49-50 participants in each experimental treatment arm and 98-100 participants in the SOC treatment arm.

Status (registry)
Suspended
Phase (registry)
Phase 2
Study type
Interventional
Enrollment
341 (estimated)
First submitted
20 Dec 2023
Start date
11 Mar 2025
Primary completion date
1 Mar 2027
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Diseases
Tuberculosis
NCT number
NCT06192160

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • QTcF interval >450 ms within 7 days prior to study entry.
  • Unable to take oral medications.
  • Taking any of prohibited medications.
  • Known allergy/sensitivity or any hypersensitivity to components of investigational agents or their formulation.
  • Taking an investigational drug or vaccine within 30 or more days prior to study entry.

Other illness

  • History of or ongoing heart failure.
  • History of known, untreated, ongoing hypothyroidism.
  • History of or ongoing bradyarrhythmia.
  • History of torsades de pointes.
  • Other medical conditions (e.g., diabetes, liver or kidney disease, blood disorders, chronic diarrhea), in the opinion of the site investigator, in which the current clinical condition of the participant is likely to prejudice the response to, or assessment of, treatment.
  • Active drug or alcohol use or dependence; or mental illness (e.g., major depression) that, in the opinion of the site investigator, would interfere with adherence to study requirements.

Lab values

  • Personal or family history of congenital QT prolongation.

Other

  • More than cumulative 7 days of treatment directed against active TB for the current TB episode in the 60 days preceding study entry.
  • Current extrapulmonary TB, in the opinion of the investigator.
  • Current Grade 2 or higher peripheral neuropathy.
  • Pregnant or breastfeeding or planning to become pregnant within the next 12 months.
  • Weight <35 kg.

Who the study is looking for

  • Pulmonary TB (among individuals either without history of prior TB treatment or with history of TB treatment completed more than 2 years prior to study entry), identified within 7 days prior to study entry by at least one sputum specimen positive for Mtb by Xpert. Semiquantitative Mtb results of "medium" or "high" from Xpert MTB/RIF Ultra are required.
  • Pulmonary TB with documented INH susceptibility (by Line Probe Assay (LPA) or Xpert MTB/XDR or other validated molecular test) and with documented RIF susceptibility (by LPA or Xpert MTB/RIF or Xpert MTB/RIF Ultra or other validated molecular test) within 7 days prior to study entry.
  • Documentation of HIV-1 infection status, as below:
    • Presence or absence of HIV-1 infection, as documented by:
    • Any licensed rapid HIV test or HIV-1 enzyme or chemiluminescence immunoassay (E/CIA) test kit, any time prior to study entry. AND for a positive result confirmation by one of the following:
    • A second antibody test from different manufacturers or based on different principles and epitopes (combination antigen-antibody-based rapid tests may be used), or
    • HIV-1 antigen, or
    • Plasma HIV-1 RNA viral load, or
    • A licensed Western blot
  • For individuals with HIV: CD4+ cell count ≥100 cells/mm3 based on testing performed within 30 days prior to study entry.
  • For individuals with HIV: Currently being treated with dolutegravir-based antiretroviral therapy (ART), or plan to initiate dolutegravir-based ART at or before study week 8.
  • Individuals age ≥18 years.
  • The following laboratory values obtained within 7 days prior to study entry at any network-approved non-U.S. laboratory that operates in accordance with Good Clinical Laboratory Practices (GCLP) and participates in appropriate external quality assurance programs:
    • Serum or plasma alanine aminotransferase (ALT) ≤3 times the upper limit of normal (ULN)
    • Serum or plasma total bilirubin ≤2 times ULN
    • Serum or plasma creatinine ≤2 times ULN
    • Serum or plasma potassium ≥3.5 mEq/L
    • Serum or plasma magnesium ≥1.0 mEq/L (≥0.500 mmol/L)
    • Absolute neutrophil count (ANC) ≥1500/mm\^3
    • Hemoglobin ≥9.0 g/dL
    • Platelet count ≥100,000/mm\^3
    • Negative for, hepatitis B surface antigen (HBsAg)
    • Negative for hepatitis C virus (HCV) antibody (or if HCV antibody positive, must have a negative HCV PCR)
  • For female study candidates who are of reproductive potential, negative pregnancy test (urine HCG or serum β-HCG) within 3 days (72 hours) prior to entry by any network-approved non-U.S. laboratory or clinic that operates in accordance with GCLP and participates in appropriate external quality assurance programs.
    • Females who are of reproductive potential and who participate in sexual activity that could lead to pregnancy must agree to use at least two of the following forms of birth control while receiving TB study medications and for 12 months after stopping study medications:
    • Male or female condoms
    • Diaphragm or cervical cap (with spermicide, if available)
    • Intrauterine device (IUD) or intrauterine system (IUS)
    • Hormone-based birth control (e.g., oral contraceptives, Depo-Provera, NuvaRing, implants)
    • Female study candidates who are of reproductive potential, but who abstain from sexual activity that could lead to pregnancy require no additional contraception.
    • Female study candidates who are not of reproductive potential are eligible without requiring the use of contraceptives. Self-reported history is acceptable documentation of menopause (i.e., at least 1 year amenorrheic), hysterectomy, bilateral oophorectomy, or bilateral tubal ligation; these candidates are all considered not of reproductive potential.
  • For male study candidates who engage in sexual activity that may lead to pregnancy in their partner must agree to either remain abstinent or use male contraceptives. They are also strongly advised to inform their non-pregnant sexual partners of reproductive potential to use effective contraceptives while the individual is on study and for 90 days after experimental treatment discontinuation.
    • For male study candidates who have undergone successful vasectomy with documented azoospermia or have documented azoospermia for any other reason, are eligible without requiring the use of contraceptives.
  • For male study candidates with pregnant partners, willingness to use condoms during vaginal intercourse while on study and for 90 days after experimental treatment discontinuation.
  • For male study candidates, willingness to refrain from sperm donation while on study and for 90 days after experimental treatment discontinuation.
  • Documentation of Karnofsky performance score ≥60 obtained within 14 days prior to study entry.
  • Chest x-ray obtained within 14 days prior to study entry.
  • A verifiable address or residence readily accessible for visiting, and willingness to inform the study team of any change of address during study treatment and follow-up period.
  • Ability and willingness of individual to provide informed consent.

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (30)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
12201, Instituto de Pesquisas em AIDS do Rio Grande do Sul - IPARGS CRSPorto AlegreBrazilUnknown status
12101, Instituto de Pesquisa Clinica Evandro Chagas (IPEC) CRSRio de JaneiroBrazilUnknown status
12701, Gaborone CRSGaboroneBotswanaUnknown status
31730, GHESKIO Institute of Infectious Diseases and Reproductive Health (GHESKIO - IMIS) CRSPort-au-PrinceHaitiUnknown status
30022, Les Centres GHESKIO Clinical Research Site (GHESKIO-INLR) CRSPort-au-PrinceHaitiUnknown status
31441, Byramjee Jeejeebhoy Government Medical College (BJGMC) CRSPuneIndiaUnknown status
12601, Moi University Clinical Research Center (MUCRC) CRSEldoretKenyaUnknown status
12501, Kenya Medical Research Institute/Walter Reed Project Clinical Research Center (KEMRI/WRP) CRSKerichoKenyaUnknown status
30301, Blantyre CRSBlantyreMalawiUnknown status
12001, Malawi CRSLilongweMalawiUnknown status
32078, Nutrición-Mexico CRSMexico CityMexicoUnknown status
11301, Barranco CRSLimaPeruUnknown status
11302, San Miguel CRS San MiguelLimaPeruUnknown status
31985, Socios En Salud Sucursal Perú CRSLimaPeruUnknown status
31981, TB HIV Innovations and Clinical Research Foundation Corp.CavitePhilippinesUnknown status
5115, Siriraj Hospital, Mahidol University NICHD CRSBangkokThailandUnknown status
31784, Chiang Mai University HIV Treatment (CMU HIV Treatment) CRSChiang MaiThailandUnknown status
5116 Chiangrai Prachanukroh Hospital NICHD CRSChiang RaiThailandUnknown status
31802, Thai Red Cross AIDS Research Centre (TRC-ARC) CRSPathum WanThailandUnknown status
12401, Joint Clinical Research Centre (JCRC)/Kampala CRSKampalaUgandaUnknown status
30293 MU-JHU Research Collaboration (MUJHU CARE LTD) CRSKampalaUgandaUnknown status
32483 National Lung Hospital CRSHanoiVietnamUnknown status
31793, South African Tuberculosis Vaccine Initiative (SATVI) CRSCape TownSouth AfricaUnknown status
31792, University of Cape Town Lung Institute (UCTLI) CRSCape TownSouth AfricaUnknown status
11201, Durban International CRSDurbanSouth AfricaUnknown status
31422, CAPRISA eThekwini CRSDurbanSouth AfricaUnknown status
11101, Wits Helen Joseph (WITS HJH) CRSJohannesburgSouth AfricaUnknown status
12301, Soweto ACTG CRSJohannesburgSouth AfricaUnknown status
31684, Rustenburg CRSRustenburgSouth AfricaUnknown status
30313, Milton Park CRSHarareZimbabweUnknown status

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This page is information, not medical advice. Discuss any trial with your doctor.