- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04460638
SARS-CoV2 (COVID-19) Diagnosis in Human Saliva by MALDI-TOF MS Profiling (CoviDiagMS)
Since March 2020, SARS-CoV2 virus (nCoV19; COVID-19) is considered pandemic. Its high rate of spread and infection in the human population and the lack of effective and validated treatment have led the authorities of several countries to confine their populations to slow the spread of COVID-19. As part of the management of this health crisis, the screening of individuals is essential in order to isolate "infected cases". These screening tests are currently performed on nasopharyngeal swabs using RT-PCR for the detection of viral RNA. Although sensitive and specific, these tests remain relatively long (2-5 hours), expensive and the strong international demand for nucleic extraction kits and enzymes are factors limiting the implementation of widespread screening (problem of supply of swabs, molecular biology consumables).
In order to prevent the risks of a shortage of screening means, we propose to develop an innovative alternative strategy, PCR-free, based on the detection of specific protein signatures in human saliva by MALDI-TOF MS profiling. MALDI-TOF MS profiling is a method used in routine diagnostics by microbiology laboratories for the identification of microorganisms. MALDI-TOF MS profiling has been successfully used to classify individuals according to their infectious status (oral pathologies) based on the analysis of their saliva, but also as a tool for the identification of respiratory viruses from cell culture supernatants. In addition, we have expertise and skills in the field of MALDI-TOF MS profiling and have implemented new strategies to improve the quality of profiles and their analysis, particularly in the context of entomological and vector identification projects. Finally, recent Chinese studies have reported that COVID-19 was detectable in saliva by RT-PCR.
The main objective of this study is to develop a test based on the MALDI-TOF profiling method to detect individuals infected with SARS-CoV2 from saliva sample.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Contacts and Locations
Study Contact
- Name: Lionel ALMERAS, PhD
- Email: almeras.lionel@gmail.com
Study Contact Backup
- Name: Emilie JAVELLE, MD
- Phone Number: +33 491617459
- Email: emilie.javelle@intradef.gouv.fr
Study Locations
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Marseille, France, 13013
- Hôpital d'Instruction des Armées Laveran
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- 18 years of age;
- screened for SARS-CoV2 by RT-PCR from a nasopharyngeal swab within 96 hours prior to inclusion.
Exclusion Criteria:
- Patient admitted to intensive care;
- Pregnant woman.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Covid+ hospitalization group
Patients hospitalized with SARS-CoV2 infection
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Saliva samples are regularly collected over a period of up to 30 consecutive days.
The participant's clinical data will be collected regularly over a period of up to 30 consecutive days.
|
Covid+ outpatient group
Patients or caregivers followed on an outpatient basis for an SARS-CoV2 infection
|
Saliva samples are regularly collected over a period of up to 30 consecutive days.
The participant's clinical data will be collected regularly over a period of up to 30 consecutive days.
|
Covid- group
Caregivers not infected with an SARS-CoV2
|
Saliva samples are regularly collected over a period of up to 30 consecutive days.
The participant's clinical data will be collected regularly over a period of up to 30 consecutive days.
|
Non-SARS pathology group
Individuals not infected with SARS-CoV2 but with another acute and/or infectious non-SARS pathology
|
Saliva samples are regularly collected over a period of up to 30 consecutive days.
The participant's clinical data will be collected regularly over a period of up to 30 consecutive days.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Development of a test based on the MALDI-TOF profiling method to detect individuals infected with SARS-CoV2 from saliva sample.
Time Frame: Day 30
|
The development of this test is based on machine learning techniques, which involve "training" a mathematical model, in which the results of the mass spectrometry analysis of saliva samples and clinical data will be used to determine the information needed to distinguish a saliva sample from a SARS-CoV2-infected participant from a healthy saliva sample.
|
Day 30
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Rate of correct classification by the test (MALDI-TOF MS profiling) from saliva sample
Time Frame: Day 30
|
For each saliva sample, the status ("correct" or "incorrect") of the classification of the sample ("infected" or "not infected") by the test (MALDI-TOF MS profiling) will be determined.
Then the rate of correct classification will be calculated.
The test will be considered efficient when it has reached a correct classification rate of more than 95%.
|
Day 30
|
Rate of correct classification by RT-PCR from saliva sample
Time Frame: Day 30
|
For each saliva sample, the status ("correct" or "incorrect") of the classification of the sample ("infected" or "not infected") by RT-PCR will be determined.
Then the rate of correct classification by RT-PCR will be calculated.
|
Day 30
|
Identification of proteins specific to the SARS-CoV2 infection
Time Frame: Day 30
|
On each saliva sample, the expression of proteins will be determined using mass spectrometry.
By comparison between SARS-CoV2 infected saliva samples and non-infected saliva samples, the presence of proteins that are specifically expressed in SARS-CoV2 infected saliva samples will be determined.
|
Day 30
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Presence of a positive anti-SARS-CoV2 antibody response by RT-PCR
Time Frame: Day 30
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On each SARS-CoV2 infected saliva sample, the presence of anti-SARS-CoV2 antibodies, by RT-PCR, will be determined.
|
Day 30
|
Correlation between the identified protein markers and the clinical course of the participants.
Time Frame: Day 30
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In SARS-CoV2 infected participants (Covid+ hospitalization group and Covid+ outpatient group), the presence of a correlation between the presence of proteins specific to the SARS-CoV2 infection and the clinical evolution of patients will be determined.
|
Day 30
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 2020-COVID19-15
- 2020-A01249-30 (Other Identifier: IDRCB)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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