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.
At least 200 participants across three treatment arms (67 in each arm) will be enrolled in Stage 1 and at least an additional 200 participants across two treatment arms (100 in each arm) will be enrolled in Stage 2. Stage 1: After written informed consent, participants with FQ-S MDR/RR-TB will be randomly assigned to receive one of Stage 1 Strategies 1-3. Stage 1 Strategy 1 (control strategy): Control regimen for all with FQ-S MDR/RR-TB. The local standard of care (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. Stage 1 Strategy 2 (investigational strategy): 4BPaLM for all with FQ-S MDR/RR-TB. 17 weeks of bedaquiline, pretomanid, linezolid, and moxifloxacin (4BPaLM). Stage 1 Strategy 3 (investigational strategy): 3BPaLM or 6BPaLM stratified medicine strategy for FQ-S MDR/RR-TB. 13 weeks of bedaquiline, pretomanid, linezolid, and moxifloxacin (3BPaLM) for participants stratified to receive shorter treatment and 24 weeks of bedaquiline, pretomanid, linezolid, and moxifloxacin (6BPaLM) for participants stratified to receive longer treatment. Stage 2: After written informed consent, participants with FQ-S MDR/RR-TB will be randomly assigned to receive one of the Stage 2 Strategies 1-2. Stage 2 Strategy 1 (control strategy): Control regimen for all with FQ-S MDR/RR-TB. The local standard of care (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. Stage 2 Strategy 2 (investigational strategy): Preferred strategy from Stage 1 for FQ-S MDR/RR-TB. Number of weeks of bedaquiline, pretomanid, linezolid, and moxifloxacin (BPaLM) for participants stratified to receive shorter treatment and for participants stratified to receive longer treatment to be determined from the preferred strategy identified in Stage 1. The sites listed below are the planned sites for Stage 1 and/or Stage 2.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
400
Frequency: daily Route of administration: oral
Frequency: daily Route of administration: oral
Frequency: daily Route of administration: oral
Frequency: daily Route of administration: oral
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.
National Center for Communicable Diseases
Ulaanbaatar, Mongolia
RECRUITINGInstitute of Chest Diseases
Kotri, Pakistan
NOT_YET_RECRUITINGHospital Nacional Sergio E. Bernales
Lima, Peru
NOT_YET_RECRUITINGPoliclínico SES
Lima, Peru
NOT_YET_RECRUITINGMulago National Referral Hospital
Kampala, Uganda
NOT_YET_RECRUITINGHanoi Lung Hospital
Hanoi, Vietnam
NOT_YET_RECRUITINGPrimary Efficacy Outcome: Desirability of Outcome Ranking (DOOR)
Desirability of outcome ranking (DOOR) outcome combining efficacy at the end of follow-up (a minimum of 28 weeks post-randomization) and safety at 28 weeks post-randomization. DOOR outcomes do not aggregate measures, but rather create distinct ordinal categories that participants will fall under. DOOR ordinal categories are as follows: 1. Cured or treatment completed by end of follow-up and no Grade 3+ AEs and treatment changes; 2. Cured or treatment completed by end of follow-up and no Grade 3+ with treatment change for any reason; 3. Cured or treatment completed by end of follow-up and at least one Grade 3+ AE; 4. Treatment failure or recurrence by end of follow-up and no Grade 3+ AE; 5. Treatment failure or recurrence by end of follow-up and at least one Grade 3+ AE; 6. Death by end of follow-up.
Time frame: 73 weeks
Mortality
Mortality
Time frame: 73 weeks
All Grade 3 or Higher AEs up to 28 Weeks
All Grade 3 or higher AEs up to 28 weeks post-randomization.
Time frame: 28 weeks
All AESIs up to 28 Weeks
All AESIs up to 28 weeks post-randomization.
Time frame: 28 weeks
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