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Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 2 / Phase 3INTERVENTIONAL

Program for Rifampicin-Resistant Disease With Stratified Medicine for Tuberculosis

Program for Rifampicin-Resistant Disease With Stratified Medicine for Tuberculosis (PRISM-TB)

Program for Rifampicin-Resistant Disease With Stratified Medicine for Tuberculosis (NCT06441006) is a Phase 2 / Phase 3 interventional studying Tuberculosis, Pulmonary and Tuberculosis, Multidrug-Resistant, sponsored by University of California, San Francisco. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

PRISM-TB is an international, seamless, multicenter, open-label, randomized, controlled, pragmatic, stratified medicine, treatment shortening, multi-arm multi-stage (MAMS), noninferiority Phase 2/3 clinical trial for fluoroquinolone-susceptible multidrug-resistant/rifampin-resistant pulmonary tuberculosis (FQ-S MDR/RR-TB). In Stage 1, participants will be randomized among one of three treatment arms (one control and two experimental). Following the interim analysis (at the end of Stage 1) based on DOOR outcome comparisons and the entirety of the data, one of the four possible experimental strategies will be identified and continue into Stage 2. In Stage 2, participants will be randomized among one of two treatment arms (one control and one experimental). The trial objective is to identify, among participants with fluoroquinolone-susceptible multidrug-resistant/rifampicin-resistant tuberculosis (FQ-S MDR/RR-TB), the preferred BPaLM strategy of 13 or 17 weeks for participants stratified to receive shorter treatment and 17 or 24 weeks for participants stratified to receive longer treatment, as defined by a prespecified stratification algorithm, and to evaluate whether this BPaLM strategy has noninferior efficacy to the control strategy at Week 73.

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against Tuberculosis, Pulmonary and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

A target enrollment of 400 participants makes this a sizable late-stage trial. Studies in this range typically have enough power to detect clinically meaningful differences from a comparator and to characterize less-common side effects.

Who May Be Eligible (Plain English)

Who May Qualify: An individual must meet all of the following inclusion criteria at the time of enrollment in order to participate in this study: 1. Confirmed fluoroquinolone-susceptible rifampicin-resistant pulmonary tuberculosis, based on sputum Xpert MTB/RIF and Xpert MTB/XDR, and/or other validated molecular test, and/or phenotypic drug susceptibility testing. a. NOTE: TB diagnosis for purposes of meeting this inclusion criterion can be from a study testing laboratory or from an outside laboratory. 2. Aged ≥ 14 years. 3. A verifiable address or residence location that is readily available for visiting, willingness to consent to home visits and phone calls, and willingness to inform the study team of any change of address during the treatment and follow-up period. 4. Ability and willingness of individual to provide written willing to sign a consent form or written consent from a parent, guardian, or caregiver and assent of the child participant per local ethics committee guidance. 5. Documentation of negative HIV infection status within 30 days prior to study entry or documentation confirming HIV infection at any time before study entry. 6. For individuals with HIV: CD4+ cell count ≥ 50 cells/mm3 based on testing performed within 30 days prior to study entry. 7. 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. a. NOTE: Dosing of ART and chemoprophylaxis for opportunistic infections should be reflective of local standard of care based on WHO or national guidelines. The following antiretrovirals are disallowed given significant drug-drug interactions with bedaquiline: efavirenz, etravirine, all protease inhibitors, and cobicistat-boosted elvitegravir. The following antiretroviral is disallowed given risk of myelosuppression with linezolid: zidovudine. ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language
Inclusion Criteria: An individual must meet all of the following inclusion criteria at the time of enrollment in order to participate in this study: 1. Confirmed fluoroquinolone-susceptible rifampicin-resistant pulmonary tuberculosis, based on sputum Xpert MTB/RIF and Xpert MTB/XDR, and/or other validated molecular test, and/or phenotypic drug susceptibility testing. a. NOTE: TB diagnosis for purposes of meeting this inclusion criterion can be from a study testing laboratory or from an outside laboratory. 2. Aged ≥ 14 years. 3. A verifiable address or residence location that is readily available for visiting, willingness to consent to home visits and phone calls, and willingness to inform the study team of any change of address during the treatment and follow-up period. 4. Ability and willingness of individual to provide written informed consent or written consent from a parent, guardian, or caregiver and assent of the child participant per local ethics committee guidance. 5. Documentation of negative HIV infection status within 30 days prior to study entry or documentation confirming HIV infection at any time before study entry. 6. For individuals with HIV: CD4+ cell count ≥ 50 cells/mm3 based on testing performed within 30 days prior to study entry. 7. 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. a. NOTE: Dosing of ART and chemoprophylaxis for opportunistic infections should be reflective of local standard of care based on WHO or national guidelines. The following antiretrovirals are disallowed given significant drug-drug interactions with bedaquiline: efavirenz, etravirine, all protease inhibitors, and cobicistat-boosted elvitegravir. The following antiretroviral is disallowed given risk of myelosuppression with linezolid: zidovudine. 8. For individuals who are pregnant: at screening, evidence by ultrasound of a viable singleton pregnancy with an estimated gestational age at enrollment of ≥ 14 weeks as per screening ultrasound. 9. Chest radiograph obtained within 14 days prior to study entry. Exclusion Criteria: An individual meeting any of the following exclusion criteria at the time of enrollment or initiation of study drugs will be excluded from study participation: 1. Known allergy/sensitivity, intolerance, or any hypersensitivity to components of study TB drugs or their formulation. 2. One or more of the following laboratory parameters: 1. Absolute neutrophil count (ANC) \< 1000/mm3. 2. Hemoglobin level \< 8.0 g/dL. 3. Serum or plasma alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥ 3 times the upper limit of normal. 4. Serum or plasma total bilirubin ≥ 3 times the upper limit of normal. 5. Serum or plasma creatinine level ≥ 3 times the upper limit of normal. 6. Evidence of laboratory values consistent with or equivalent to grade 4 toxicity (i.e., potentially life-threatening). 7. NOTE: Persons found not to be eligible due to laboratory abnormalities may be reevaluated within the screening window. 3. QTcF interval ≥ 480 ms within 5 days prior to study entry. 4. One or more risk factors for QT prolongation (apart from age and sex) or other uncorrected risk factors for torsades de pointes: evidence of ventricular pre-excitation (Wolff-Parkinson-White syndrome); electrocardiographic evidence of either complete left bundle branch block or right bundle branch block, or incomplete left bundle branch block or right bundle branch block and QRS complex duration ≥ 120 ms on at least one ECG; current pacemaker implant; congestive heart failure; evidence of second- or third-degree heart block; bradycardia defined by sinus rate less than 50 bpm; personal or family history of long QT syndrome; personal history of arrhythmic cardiac disease, with the exception of sinus arrhythmia; personal history of syncope (i.e., cardiac syncope not including syncope due to vasovagal or epileptic causes). 5. Current grade 2 or higher peripheral neuropathy. a. NOTE: Peripheral neuropathy assessment must be obtained within 7 days prior to study entry. 6. Documentation of Karnofsky Performance Status Score \< 50 obtained within 14 days prior to study entry. 7. Known resistance to bedaquiline, pretomanid, delamanid, linezolid, or fluoroquinolones. 8. Previous use of any second-line anti-TB drugs for more than 14 days during the 12 months prior to the screening visit date. 9. Known or presumed central nervous system TB, osteoarticular TB, or miliary/disseminated TB in the current TB episode. 10. Taking any medication that is contraindicated with study medicines which cannot be stopped (with or without replacement) or requires a washout period longer than 2 weeks. 11. Any condition (social or medical or psychological) which, in the opinion of the investigator, would make participation unsafe or interfere with adherence to study requirements. 12. Current enrollment in other therapeutic trials will not be eligible. a. NOTE: Current enrollment of index cases in prevention trials will be allowed on a case-by-case basis, provided that the prevention trial does not include a therapeutic intervention that could affect response to TB treatment. All persons who are not eligible for the PRISM-TB trial will be managed according to local routine practice and may enroll in other studies. Criteria for Exclusion after Entry ('Late Exclusion'): Enrolled individuals who are subsequently determined to meet the following criteria will be classified as 'late exclusions' and study treatment will be discontinued: 1\. Bedaquiline, pretomanid, delamanid, linezolid, or fluoroquinolone resistance on phenotypic or molecular drug- susceptibility testing from samples collected up to 4 weeks after randomization.

Treatments Being Tested

DRUG

Bedaquiline

Frequency: daily Route of administration: oral

DRUG

Linezolid

Frequency: daily Route of administration: oral

DRUG

Pretomanid

Frequency: daily Route of administration: oral

DRUG

Moxifloxacin

Frequency: daily Route of administration: oral

DRUG

Control Arm FQ-S MDR/RR-TB regimen, designed according to latest international guidelines

The local SOC regimen consistent with preferred regimen(s) in international guidelines. In most cases this will be 24 weeks of bedaquiline, pretomanid, linezolid, and moxifloxacin (6BPaLM). Doses and durations of each component may change based on the latest international guidelines and the local SOC.

Locations (6)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

National Center for Communicable Diseases
Ulaanbaatar, Mongolia
Institute of Chest Diseases
Kotri, Pakistan
Hospital Nacional Sergio E. Bernales
Lima, Peru
Policlínico SES
Lima, Peru
Mulago National Referral Hospital
Kampala, Uganda
Hanoi Lung Hospital
Hanoi, Vietnam

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT06441006), the sponsor (University of California, San Francisco), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT06441006 clinical trial studying?

PRISM-TB is an international, seamless, multicenter, open-label, randomized, controlled, pragmatic, stratified medicine, treatment shortening, multi-arm multi-stage (MAMS), noninferiority Phase 2/3 clinical trial for fluoroquinolone-susceptible multidrug-resistant/rifampin-resistant pulmonary tuberculosis (FQ-S MDR/RR-TB). In Stage 1, participants will be randomized among one of three treatment arms (one control and two experimental). Following the interim analysis (at the end of Stage 1) based on DOOR outcome comparisons and the entirety of the data, one of the four possible experimental stra… The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT06441006?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT06441006?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT06441006. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT06441006. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.