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Recurrent Tuberculosis clinical trials

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NCT ID: NCT03011580 Recruiting - Clinical trials for Recurrent Tuberculosis

Vitamin D to Resolve Inflammation After Tuberculosis (ResolveD-TB)

Start date: March 14, 2017
Phase: Phase 2
Study type: Interventional

This Strategic Research Project is a translational proof-of-concept study that will determine whether vitamin D3 has potential to prevent recurrent tuberculosis (TB), as indicated by enhanced resolution of pulmonary inflammation detected using 18F-FDG PET-CT scanning. The extent of pulmonary inflammation detectable on PET-CT scanning is a validated biomarker that has previously been shown to predict risk of TB recurrence in patients taking anti-TB treatment. The investigators propose to explore whether vitamin D3 can enhance resolution of PET-CT-detectable pulmonary inflammation, on the basis of extensive preliminary data from in vitro studies and a Phase 2b clinical trial that the investigators have conducted, showing that high-dose vitamin D3 accelerates resolution of peripheral blood inflammatory responses in patients with pulmonary TB. Forty vitamin D-deficient patients who have completed 6 months' TB treatment, but who still have residual pulmonary inflammation detectable on PET-CT scanning, will be allocated to receive either an 8-week course of high-dose oral vitamin D3 supplementation or placebo during the study period. The extent of pulmonary inflammation on PET-CT scanning will be compared between intervention vs. control groups at 8-week follow-up. If the study shows a positive result, it will generate valuable proof-of-concept data that could be used to support an application to conduct a large phase 3 trial of vitamin D supplementation to prevent TB recurrence.

NCT ID: NCT02114684 Completed - Clinical trials for Recurrent Tuberculosis

Improving Retreatment Success (IMPRESS)

Start date: November 2013
Phase: Phase 1/Phase 2
Study type: Interventional

This is an open label randomized controlled clinical trial comparing two regimens for treatment of smear-positive pulmonary TB, among patients previously treated for TB. The primary objective is to determine if a moxifloxacin-containing regimen, substituting moxifloxacin for ethambutol, of 24 weeks duration is superior to a control regimen of 24 weeks duration in improving treatment outcomes in patients with recurrent TB and shortens the duration of TB treatment.