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Clinical Trial Summary

In countries with a high tuberculosis (TB) prevalence, TB and invasive bacterial infections are leading causes of early death in patients who initiate antiretroviral therapy (ART) with advanced immunodeficiency. We hypothesize that a systematic 6-month empirical TB treatment initiated 2 weeks before the introduction of ART in HIV-infected adults with severe immunosuppression (CD4<100/mm3) and no overt evidence of TB will reduce the risk of death and invasive bacterial infections. This strategy will be compared to one of extensive TB testing using point-of-care tests (Xpert MTB/RIF® and urine lipoarabinomanan LAM) and chest X-ray to identify and treat only patients with at least one positive test suggestive of TB.


Clinical Trial Description

Settings: Cambodia, Côte d'Ivoire, Uganda, Vietnam. Design: Multicentre, two-arm, unblinded randomized controlled superiority trial. Objective: To compare the 24-week risk of death and occurrence of invasive bacterial infection between two experimental strategies in HIV-1 infected adults who start ART with a CD4 count <100/mm3: (i) continuous extensive TB screening during follow-up each time the patient present with symptoms, versus (ii) systematic empirical TB treatment started 2 weeks before ART initiation. Trial strategies: At inclusion, participants will be randomized 1:1 in two strategies of TB testing and treatment: extensive TB screening, or systematic empirical TB treatment. Extensive TB screening (arm 1): In this arm: - TB screening point-of-care tests (Xpert MTB/RIF®, urine LAM) and chest X-ray will be used extensively at randomisation (in all patients) and during follow-up (in patients with signs or symptoms suggestive of TB); - Only patients who meet standardized criteria for TB at inclusion or during follow-up will receive a standard TB treatment (2ERHZ/4RH); - ART (tenofovir(TDF)-lamivudine (3TC)/emtricitabine(FTC) or zidovudine (AZT)-lamivudine+ efavirenz) will be started immediately after randomization in patients not put on TB treatment, and 2 weeks after initiation of TB treatment in others. Systematic empirical TB treatment (arm 2): In this arm: - TB screening point-of-care tests will not be used; - All patients will start a 6-month standard TB treatment (2ERHZ/4RH) at randomization; ART (tenofovir-lamivudine/emtricitabine or zidovudine-lamivudine+ efavirenz) will be started 2 weeks after TB treatment initiation. Both strategies will apply to the first 24 weeks in the trial (intervention period). From week-24 to week-48, the choice of TB tests and the prescription of TB treatment will be left upon the decision of the investigator in both trial arms. Inclusion time: 24 months. Follow-up: each patient will be followed 48 weeks. Statistical analysis: the primary analysis will be intention to treat. It will compare the 24-week probability of death or invasive bacterial infection between arms. Sample size: 1050 participants. This will allow demonstration of a 40% reduction in the 24-week probability of death or invasive bacterial infection in arm 2, compared to arm 1 (α 5%; 1-β 80%). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02057796
Study type Interventional
Source French National Institute for Health and Medical Research-French National Agency for Research on AIDS and Viral Hepatitis (Inserm-ANRS)
Contact
Status Completed
Phase Phase 4
Start date September 2014
Completion date April 2018

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