300,000+ clinical trials. Find the right one.

142 active trials for Tuberculosis

Choice Architecture Based TB Preventive Therapy Prescribing

Background: Clinical guidelines and policies often fail to achieve high levels of delivery of intended clinical interventions. The difference in what investigators know works and what is actually delivered at the clinic-level to patients, is known as the "science-to-service gap." In the realm of tuberculosis (TB) prevention, this gap is reflected in <20% of TB preventive therapy (TPT)-eligible persons living with HIV (PLWH) being offered or initiated on isoniazid preventive therapy (IPT) in many settings. Recent innovation in TPT have brought new pharmacological options allowing for shorter courses, intermittent dosing, or both. A 12-dose once-weekly rifapentine and isoniazid (3HP) regimen has been demonstrated to be effective and well tolerated. This regimen has several potential advantages over IPT; however, if patients are never assessed for 3HP eligibility and 3HP is not prescribed, TPT packets will remain on pharmacy shelves and the potential health benefits will not reach those who need it. The overarching goal of this study is to identify a generalizable approach to overcome current barriers to delivery of TPT in order to achieve high levels of TPT delivery during routine care in public clinics. Investigators are proposing a choice architecture that makes prescribing TPT the "default" or standard option and that for TPT not to be prescribed will require a choice by a clinician to "opt-out" of TPT for a specific patient. Methods: Investigators will use a cluster randomized design with the larger IMPAACT4TB (I4TB) program to deliver 3HP to countries in Africa, Asia, and Latin America. A subset of countries and clinics within these I4TB countries will be included with each clinic the unit of randomization. Clinics within study countries will be randomized to one of two strategies: (1) standard implementation within the UNITAID project (clinic training on TPT along with posters and other standard medication material) and (2) choice architecture default TPT. Clinical process data will be used to assess the effectiveness of each strategy to determine the proportion of PLWH (1) screened for TB preventive therapy, (2) eligible for TPT, and (3) prescribed TPT. Significance: Identifying a pragmatic approach will lead the way for improving TPT prescribing across the study sites. It will furthermore contribute to implementation science at large in describing implementation strategies that may be applied to clinic-level implementation of other innovations.

Start: March 2021
Single-Dose Study to Evaluate the PKs of Pretomanid in Subjects With Renal Impairment Compared to Subjects With Normal Renal Function

This is a Phase I, open-label, single dose, sequential group study to compare the safety and pharmacokinetics of pretomanid in the following two groups of subjects: 1) those with mild, moderate, and severe renal impairment including those with End Stage Renal Disease (ESRD) not needing dialysis; and 2) matched subjects with normal renal function. The study will be conducted in two parts. Part A will enroll subjects from Groups 1A and 2 (i.e. 6 healthy matched controls and 6 subjects with ESRD, not on dialysis). A decision to enroll subjects into Part B (i.e. to investigate mild, moderate and severe renal impairment) will be conducted after the pharmacokinetics (PK) of the parent compound and safety of subjects enrolled in Part A have been reviewed. Part B will be conducted if the results of Part A demonstrate that patients with ESRD, not on dialysis have different exposures to pretomanid that may impact safety or efficacy relative to the exposures of healthy subjects. If the decision is taken to conduct Part B, 6 subjects each with mild, moderate and severe renal impairment (Groups 3, 4, 5) will be enrolled together with additional healthy matched subjects (Groups 1B-1D). Part B, treatment Groups 3, 4, and 5 will be initiated concurrently when each subject in Groups 1A and 2 has completed Part A of the study. The approximate patient involvement will be 3 months. The primary objective is to evaluate the PK of pretomanid after a single oral dose of 200 mg in subjects with renal impairment compared to matched healthy controls.

Start: August 2019
TB Treatment Support Tool Interactive Mobile App and Direct Adherence Monitoring on TB Treatment Outcomes

The overall goal of this study is to conduct a Randomized Clinical Trial (RCT) to evaluate a tuberculosis treatment support tool (TB-TST), a cellular phone app developed using user-centered design principles and a paper-based drug metabolite urine test strip modified for home use for testing the presence of isoniazid drug metabolites in urine to directly monitor adherence to treatment, to improve treatment outcomes for patients with TB receiving self-administered treatment (SAT). Poor medication adherence to TB regimens, along with challenges in monitoring patients and returning them to treatment, are important contributing factors to poor outcomes and the development of drug resistance. With advances and proliferation of mobile technology platforms, there is substantial interest in the possible use of mobile health (mHealth) interventions to address these challenges. Of the mHealth approaches under investigation for TB adherence monitoring, drug metabolite testing has been identified as the most promising, ethical, and accurate, and the least intrusive and stigmatizing strategy compared to other mobile solutions, yet its potential remains largely unexplored. Additionally, mobile applications (apps) may provide personalized treatment supervision, increase patients' self-management and improve patient-provider communication by offering more advanced functionalities for patient support and monitoring. The existing version of the TB-TST app offers education on TB and its treatment, communication with a care-coordinator, tracks treatment adherence (both by self-reporting and direct metabolite test strip images), self-reports treatment side-effects, and retains patient's "diary" notes. This proposal builds on preliminary work to: 1) Refine the TB-TST intervention based on pilot study findings and apply principles of user-centered design; 2) Evaluate the impact of the TB-TST on treatment outcomes compared to usual care; 3) Assess patient and provider perceptions of the facilitators and barriers to implementation of the TB-TST and synthesize lessons learned with stakeholders and policy makers. Primary outcome will be treatment success. Secondary outcomes will include: treatment default rates, self-reported adherence, technology use and usability. Findings have broader implications not only for TB adherence but disease management more generally and will improve our understanding of how to support patients facing challenging treatment regimens

Start: November 2020