- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04379466
Effector and Regulatory T Cell Receptor Repertoire Analyses in Patients Affected by COVID-19 (CovRep)
The specificity of the adaptive immune response (AIR), and its balance between effector T cells (Teffs) and regulatory T cells (Tregs), is most likely a major determinant of the outcome of a Covid-19 infection.
We aim to analyze (i) the cellular components and (ii) the specificity of the AIR to COVID-19 in 60 patients with moderate and severe form of the disease. This should have important implications for (i) understanding the pathophysiology of the disease, (ii) discovering biomarkers of severity and (iii) designing treatments and vaccines.
Study Overview
Status
Conditions
Detailed Description
The quality of the adaptive immune response (AIR) to COVID-19 probably determines the course of the disease. Therefore, a comprehensive knowledge of the immune response to COVID-19 is required to better anticipate its outcome and identify vaccine targets. In particular, the quality of an AIR can be investigated by immunophenotyping (enumerating immune cells and assessing their fitness) and by analyzing the T cell receptor (TCR) repertoire.
The cellular components of the AIR will be analyzed by a deep immunophenotyping generating >800 measures assessing immune cells quantitatively and qualitatively (Pitoiset et al.,2018). Combined with supervised and unsupervised analyses, it has the power to detect subtle/hidden abnormalities.
The specificity will be analyzed by studying the global T cell receptor (TCR) repertoire of separated Tregs and Teffs from peripheral blood, as well as by single cell sequencing of cells from bronchoalveolar lavages.
These combined approaches should uncover parameters/abnormalities of the AIR linked to the infection severity and outcome, and lead to a better understanding of the nature of the Tregs and Teffs repertoires against COVID-19. This will have important implications for (i) understanding the pathophysiology of the disease, (ii) discovering biomarkers of severity and (iii) designing treatments and vaccines.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Paris, France, 75013
- Hôpital Pitie Salpétrère
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion criteria :
- Age≥18 and ≤75 years
- Presenting a confirmed diagnosis of COVID-19 disease in accordance with WHO diagnostic criteria;
- Good venous capital ;
- Affiliation to a social security system;
- Having declared his/her non-opposition to participation in research (for patients hospitalized in intensive care units who are not able to communicate, the non-opposition of a trusted person will be sought.)
Exclusion criteria :
- Still under the exclusion period from another biomedical study
- Psychiatric illness or addiction that could interfere with the ability to comply with the requirements of the protocol or to give consent to participate in the study;
- Patient benefiting from a legal protection measure
Study Plan
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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A list of COVID-19 specific TCR sequences
Time Frame: at day1
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at day1
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
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One or more measures from peripheral blood immunophenotyping that is/are associated with COVID-19 outcome
Time Frame: at day1
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at day1
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Group of COVID-19 specific TCR sequences that is associated with COVID-19 outcome
Time Frame: at day1
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at day1
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Collaborators and Investigators
Investigators
- Principal Investigator: David KLATZMANN, MD, PhD, Assistance Publique - Hôpitaux de Paris
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
Additional Relevant MeSH Terms
Other Study ID Numbers
- APHP200544
- 2020-A01245-34 (Other Identifier: IDRCB)
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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