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Detection of Microorganisms and Antibiotic Resistance Genes Using the Curetis Unyvero LRT55 Application (LRT55)

This study has been completed.
Global BioClinical
Information provided by (Responsible Party):
Curetis GmbH Identifier:
First received: August 7, 2013
Last updated: November 14, 2016
Last verified: September 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 Intervention
Device: LRT55 Testing

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Detection of Microorganisms and Antibiotic Resistance Genes in Lower Respiratory Tract (LRT) Samples Using the Curetis Unyvero LRT55 Application

Resource links provided by NLM:

Further study details as provided by Curetis GmbH:

Primary Outcome Measures:
  • 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
Bronchial lavage (BAL) Tracheal aspirate (TA)

Enrollment: 1500
Study Start Date: June 2015
Study Completion Date: November 2016
Primary Completion Date: November 2016 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
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

Detailed Description:

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.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Suspicion of lower respiratory tract infection in hospitalized subjects.

Inclusion Criteria:

  • Hospitalized subjects with suspicion of lower respiratory tract infection
  • Age at least 18 years
  • Available surplus respiratory aspirate or bronchial lavage sample

Exclusion Criteria:

  • Out-patient (ambulatory patient)
  • Known infection with HIV, HBV or tuberculosis
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: 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
Mayo Clinic
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
Sponsors and Collaborators
Curetis GmbH
Global BioClinical
Study Director: Johannes Bacher Curetis GmbH
  More Information

Responsible Party: Curetis GmbH Identifier: NCT01922024     History of Changes
Other Study ID Numbers: CURETIS LRT55 Study - V 6.0
Study First Received: August 7, 2013
Last Updated: November 14, 2016

Additional relevant MeSH terms:
Lung Diseases
Respiratory Tract Diseases
Respiratory Tract Infections
Anti-Bacterial Agents
Anti-Infective Agents processed this record on May 23, 2017