A Confirmatory Trial of Adjunctive NAC to Prevent Post Tuberculosis Lung Disease (NCT06909799) | Clinical Trial Compass
RecruitingNot Applicable
A Confirmatory Trial of Adjunctive NAC to Prevent Post Tuberculosis Lung Disease
The Gambia242 participantsStarted 2025-04-28
Plain-language summary
The goal of this clinical trial is to evaluate if N-acetylcysteine (NAC) works to prevent post-tuberculosis lung disease (PTLD) in patients with severe pulmonary impairment. It also aims to assess the safety of NAC. The main questions the study aims to answer are: Does NAC improve lung function (FEV1%) over 12 months in participants with pulmonary tuberculosis and baseline risk factors for PTLD? What medical issues or adverse events do participants experience while taking NAC? Researchers will compare NAC treatment to a control group to see if it can prevent PTLD when given in addition to standard TB treatment.
Participants will: Take NAC (1800mg twice daily) for 6 months with standard TB treatment or receive standard TB treatment alone; Attend scheduled clinic visits for 12 months, during which they will have respiratory assessments, blood tests, and symptom monitoring; Complete quality-of-life questionnaires and provide sputum and blood samples for analysis at multiple time points.
Who can participate
Age range
18 Years – 65 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Persons aged 18 to 65 years
. Willing and able to provide signed written consent, or witnessed oral con-sent with thumbprint in the case of illiteracy, prior to undertaking any trial-related procedures.
. Body weight (in light clothing without shoes) between 30 and 90 kg.
. Xpert TB/RIF OR Ultra showing RIF-S-MTB, with subsequent confirmation of MTB by culture.
. Chest radiograph meeting criteria for moderate or far advanced pulmonary tuberculosis 1
. FEV1 ≤65% of predicted adjusted for age, height, sex, and race
. If female, of child-bearing potential and sexually active, willing to use a contraceptive method for the duration of study participation
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. HIV-1/2 seronegative, or if seropositive: CD4 T cell count ≥100/mcL and either currently receiving ART or willing to start ART during study participation
Exclusion criteria
. Any condition for which participation in the trial, as judged by the investigator, could compromise the well-being of the subject or prevent, limit or confound protocol specified assessments, such as pneumothorax or clinically significant pleural effusion
. Pregnancy or breast-feeding
. Is critically ill, and in the judgment of the investigator has a diagnosis likely to result in death during the trial or the follow-up period.
. TB meningitis or other forms of severe tuberculosis with high risk of a poor outcome as judged by the investigator.
. History of allergy or hypersensitivity to any of the trial therapies or related substances, including known allergy or suspected hypersensitivity to rifampin.
. Having participated in other clinical trials with investigational agents within 8 weeks prior to trial start or currently enrolled in an investigational trial.
. No more than 5 days treatment for the current TB episode, and no other TB treatment in the preceding 6 months
. Angina pectoris requiring treatment with nitroglycerin or other nitrates