Accuracy and Feasibility of Xpert Ultra
A Multicentre Study of the Diagnostic Accuracy and Feasibility of the Xpert Ultra for Detection of TB and Rifampin Resistance in Adults Suspected of Having Pulmonary TB
1 other identifier
observational
1,400
4 countries
6
Brief Summary
Consenting adults presenting with signs and symptoms compatible with pulmonary tuberculosis will be interviewed for demographic and medical information, and then will be asked to provide 3-4 expectorated sputum specimens. In the study laboratory, sputa will be tested using conventional and investigational diagnostic tests for tuberculosis and rifampin resistance.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Mar 2016
6 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
March 1, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 1, 2017
CompletedFirst Submitted
Initial submission to the registry
March 2, 2017
CompletedFirst Posted
Study publicly available on registry
March 7, 2017
CompletedStudy Completion
Last participant's last visit for all outcomes
October 1, 2017
CompletedFebruary 8, 2018
February 1, 2018
1 year
March 2, 2017
February 6, 2018
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Difference in sensitivity and specificity (ability to correctly identify those with TB and those without TB) between Xpert Ultra and Xpert MTB/ for Mycobacterium tuberculosis (MTB) detection (non-inferiority endpoint)
Day 1
Secondary Outcomes (4)
Sensitivity of Xpert Ultra for MTB detection (ability to correctly identify those with TB i.e. true positives), stratified by smear status
Day 1
Sensitivity and specificity (ability to correctly identify those with TB resistant to Rifampin and those with TB susceptible to Rifampin) of Xpert Ultra for detection of Rifampin (RIF) resistance
Day 1
Difference in sensitivity and specificity (ability to correctly identify those with TB resistant to Rifampin and those with TB susceptible to Rifampin) of Xpert Ultra and Xpert MTB/RIF for detection of RIF resistance
Day 1
Proportion of test attempts that do not yield a determinate result for Xpert Ultra and for Xpert MTB/RIF
Day 1
Interventions
Next generation Xpert MTB/RIF assay, this cartridge is intended for the detection of M. tuberculosis in sputum as well as the detection of M. tuberculosis mutations associated with resistance to rifampin
Eligibility Criteria
Individuals who have symptoms consistent with pulmonary TB presenting to participating centres. Two groups of participants will be recruited, namely a 'Case Detection Group' and a 'Drug-Resistant TB Group'.
You may qualify if:
- Age 18 years or above;
- Provision of informed consent;
- Willingness to provide 4 sputum specimens at enrolment;
- Willingness to have a study follow-up visit approximately 42 to 70 days after enrolment
- Clinical suspicion of pulmonary TB (including cough ≥2 weeks and at least 1 other symptom typical of TB)
You may not qualify if:
- Receipt of any dose of TB treatment within 6 months prior to enrolment
- Participants for whom, at the time of enrolment, the follow-up visit is judged to be poorly feasible (e.g. individuals planning to relocate)
- Drug-Resistant TB Group
- Age 18 years or above;
- Provision of informed consent;
- Willingness to provide 4 sputum specimens at enrolment;
- Non-converting pulmonary TB cases (category I and category II failures) or multi-drug resistant (MDR) suspect\* (based on World Health Organization definition), i.e. at least one of the following: i) retreatment cases, ii) active TB cases that are MDR-contacts and iii) patients at high risk for MDR-TB as determined by local program (e.g. prisoners)
- none
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (6)
Republican Research and Practical Centre for Pulmonology and Tuberculosis
Minsk, Belarus
Clinical Research Unit, National Center for Tuberculosis and Lung Diseases
Tbilisi, Georgia
National Institute for Research in Tuberculosis
Madras, India
Dept of Microbiology, Hinduja Hospital
Mumbai, India
New Delhi Tuberculosis Centre
New Delhi, India
Department of Molecular Medicine and Haematology, School of Pathology, Faculty of Health Science, University of the Witwatersrand, and The National Priority Program of the National Health Laboratory Service
Johannesburg, South Africa
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Claudia M Denkinger, MD, PhD
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Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 2, 2017
First Posted
March 7, 2017
Study Start
March 1, 2016
Primary Completion
March 1, 2017
Study Completion
October 1, 2017
Last Updated
February 8, 2018
Record last verified: 2018-02