Detection of Microorganisms and Antibiotic Resistance Genes Using the Curetis Unyvero LRT55 Application (LRT55)
|ClinicalTrials.gov Identifier: NCT01922024|
Recruitment Status : Completed
First Posted : August 14, 2013
Last Update Posted : November 15, 2016
The Curetis Unyvero LRT55 Application is intended to detect and to identify genes of 21 microorganisms and 19 genes associated with antibiotic resistance in 4 hours.
In this study, the performance of the Unyvero LRT55 Application shall be tested under clinical conditions and compared to (1) a composite reference method (for non-atypical or cultured microorganisms) or (2) a molecular PCR based reference method for the 3 atypical microorganisms Chlamydophila pneumoniae, Legionella pneumoniae, and Pneumocystis jirovecii, and for resistance genes.
PCR amplifications are followed by bi-directional sequencing, including comparison of the test results Time to result will be compared for the Unyvero LRT55 Application and standard-of care.
|Condition or disease||Intervention/treatment|
|Pneumonia||Device: LRT55 Testing|
This is a non-interventional, controlled, non-randomized multicenter clinical study that compares a new diagnostic device, the Unyvero LRT55 Application (based on molecular diagnostic methods) to either (1) a composite reference method (for non-atypical microorganisms), (2) a composite PCR-based method for 3 atypical microorganisms or (3) a PCR-based reference method for resistance genes.
The study will use leftover lower respiratory tract samples taken from subjects suspected with lower respiratory tract infections: (a) Specimens taken prospectively for standard-of-care (i.e. microbiology testing) from hospitalized subjects. (b) Banked specimens for rare microorganisms.
As the device is under investigation, the test results provided by the Unyvero LRT55 Application will not be made available to the treating physician and therefore will not be used for diagnosis, treatment or other management decisions.
|Study Type :||Observational|
|Actual Enrollment :||1500 participants|
|Official Title:||Detection of Microorganisms and Antibiotic Resistance Genes in Lower Respiratory Tract (LRT) Samples Using the Curetis Unyvero LRT55 Application|
|Study Start Date :||June 2015|
|Primary Completion Date :||November 2016|
|Study Completion Date :||November 2016|
Prospective Fresh Clinical Specimens
Patients with suspicion of lower respiratory tract infection (pneumonia), samples tested with Unyvero LRT 55 cartridge and results compared against composite (comparator) which is based on routine clinical microbiology and a second PCR test
Device: LRT55 Testing
Testing on the Unyvero LRT55
Retrospective Frozen Clinical Specimens
Patients with suspicion of lower respiratory tract infection (pneumonia), samples tested with Unyvero LRT 55 cartridge and results compared against routine clinical microbiology
Device: LRT55 Testing
Testing on the Unyvero LRT55
- Clinical sensitivity and specificity for microorganism detection as compared to routine microbiology and other reference methods including PCR and sequencing [ Time Frame: Up to 12 months ]Sensitivity for microorganism detection will be determined against the respective reference method consisting of standard procedure and/or a reference method based on PCR and bi-directional sequencing using alternative primers. Sensitivity for non-atypical microorganism detection will thus be determined if at least 1 out of 2 reference methods have identified microorganisms that are covered by the panel of the investigational IVD. Results will further be analyzed against standard of-care alone, as well as against composite comparator. Sensitivity for atypical microorganism detection will be determined against PCR with alternative primers as reference method. Specificity for microorganism detection will be determined in all samples included in the trial. Individual specificities will be calculated for the detection of the respiratory microorganisms analyzed by the investigational IVD compared to the microorganisms reference method.
Biospecimen Retention: Samples With DNA
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01922024
|United States, California|
|University of California Los Angeles (UCLA)|
|Los Angeles, California, United States, 90049|
|United States, Illinois|
|Northwestern Memorial Hospital|
|Chicago, Illinois, United States, 60611|
|United States, Maryland|
|Johns Hopkins Hospital|
|Baltimore, Maryland, United States, 21287|
|United States, Michigan|
|William Beaumont Hospital|
|Royal Oak, Michigan, United States, 48073|
|United States, Minnesota|
|Rochester, Minnesota, United States, 55901|
|United States, New York|
|Columbia Universiy Medical Center / New York-Presbyterian Hosp.|
|New York, New York, United States, 10032|
|Rochester Medical Center|
|Rochester, New York, United States, 14642|
|United States, Ohio|
|Summa Health System|
|Akron, Ohio, United States, 44304|
|United States, Washington|
|University of Washington|
|Seattle, Washington, United States, 98195|
|Study Director:||Johannes Bacher||Curetis GmbH|