A Phase 2 interventional study of sorfequiline and Pretomanid in Tuberculosis, Pulmonary, sponsored by Global Alliance for TB Drug Development. Recruiting at 12 sites in 2 countries. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-08-19.
Sponsored by Global Alliance for TB Drug Development · Phase 2, Interventional, and Treatment
The goal of this interventional trial is to evaluate the safety and efficacy of the loading dose regimen 200/100SPaL-4/13 weeks, and the 100SPaL -17 weeks regimen in adults with newly diagnosed, drug-sensitive, smear-positive pulmonary tuberculosis.
Participants (18-65 years) will be randomised 1:1, stratified by country and disease severity, to receive either :
The primary objective is to assess safety through 17 weeks of treatment, including treatment-emergent adverse events, ECG findings, vital signs, laboratory assessments, visual acuity, and peripheral neuropathy. Secondary objectives include assessments of efficacy (time to stable sputum culture conversion; favorable outcome and treatment failure/relapse at 26 and 52 weeks after end of treatment) and pharmacokinetics of trial drugs, with exploratory analyses including predictors of culture conversion, exposure-response relationships, and quality of life.
This is a phase 2, randomised, multi-center, partially blinded, clinical trial conducted in 2 treatment arms.
The trial will be performed at multiple centers in South Africa and Tanzania in at approximately 100 participants with DS-TB who meet all the inclusion criteria and none of the exclusion criteria, aged 18 to 65, inclusive. Participants will be randomised to one of the 2 sorfequiline, pretomanid and linezolid containing regimens and will be randomised in 1:1 ratio based on country and severity of disease (AFB 3+ and/or bilateral cavitation). T
The trial will consist of the following periods:
Treatment Period: approximately 100 participants will be randomised equally to the 2 treatment arms below:
319 studies on the registry are indexed under Tuberculosis, Pulmonary; 71 are open to participants now.
This study's planned enrollment of 100 is below the median of 146 across 227 interventional studies indexed under Tuberculosis, Pulmonary.
Browse Tuberculosis, Pulmonary studies →Global Alliance for TB Drug Development is the lead sponsor of 31 studies on the registry; 1 is open to participants now.
Of its 10 completed or terminated interventional studies of FDA-regulated products, 6 (60%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Laboratory abnormalities as defined in the protocol. • For participants living with only:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.
Studies often ask for 60 or 70 and above. Your doctor gives the score.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Karnofsky performance status (KPS)
A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.
Studies often ask for 60 or 70 and above. Your doctor gives the score.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CD4 count
The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Regimen (17 weeks total): Weeks 1-4: Sorfequiline 200 mg + Pretomanid 200 mg + Linezolid 600 mg, once daily Weeks 5-17: Sorfequiline 100 mg + Pretomanid 200 mg + Linezolid 600 mg, once daily
Drug: sorfequiline · Drug: Pretomanid · Drug: Linezolid
Regimen (17 weeks total): Weeks 1-17: Sorfequiline 100 mg + Pretomanid 200 mg + Linezolid 600 mg, once daily Includes sorfequiline placebo tablets during first 4weeks to maintain blinding vs the loading regimen.
Drug: sorfequiline · Drug: Pretomanid · Drug: Linezolid
Two sorfequiline 100mg tablets taken once daily for 4 weeks then one sorfequiline taken once daily for 13 weeks OR one sorfequiline 100mg tablet taken once daily for 17 weeks (with one 100mg sorfequiline placebo tablet for the first 4 weeks)
Also known as: TBAJ876, S
one 200mg tablet taken once daily for 17 weeks
Also known as: PA-824, P, Dovprela
one 600mg tablet taken once daily for 17 weeks
Also known as: L, Zyvox, Linospan, Linosept, Lizolid
Incidence and characterization of treatment-emergent adverse events (TEAEs)
Includes severity, relationship to study drugs, seriousness, TEAEs leading to discontinuation, and TEAEs leading to death; plus safety monitoring endpoints (ECG, vital signs, clinical labs, visual acuity changes, peripheral neuropathy changes.
Time frame: Through 17 weeks of treatment
Time to stable sputum culture conversion (SSCC) to negative
SSCC defined as two negative cultures at least 7 days apart without an intervening MTB-positive result (protocol definition used for time-to-event analyses). Time Frame: Through 17 weeks of treatment
Time frame: Through 17 weeks of treatment
Proportion with favorable outcome
Favorable outcome assessed post-treatment; protocol includes evaluation at 26 weeks and 52 weeks after end of treatment
Time frame: 26 weeks after EOT; 52 weeks after EOT
Plan to share: Yes — There is an agreement between the Principal Investigator and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed. The results of this trial may be published or presented at scientific meetings. If this is foreseen, the investigator agrees to submit all manuscripts or abstracts to TB Alliance before submission. This allows TB Alliance to protect proprietary information and to provide comments; such consent will not be withheld unreasonably . Finalized results are published following completion of the trial. At that time, requests for the IPD can be made to C-Path at https://c-path.org/tools-platforms/tb-pacts/
Supporting information: Study protocol, Statistical analysis plan, Informed consent form
Time frame: IPD will be available post trial completion
Access criteria: Researchers will be able to access the IPD (datasets) and supporting information through C-path URL.
Data sharing details ↗ · c-path.org
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Studies of the drug tested here: TBAJ-876
Global Alliance for TB Drug Development