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NCT04402892: MEMO-COV2

COVID-19: SARS-CoV-2 Specific Memory B and T-CD4+ Cells

Status unknown NA Last updated 27 May 2020
What this trial tests

NA trial testing 35 ml blood, 5 tubes LITHIUM HEPARINATE at each time (hospitalized Patients ) in COVID-19 in 60 participants. Status unknown.

Timeline
1 June 2020
Primary endpoint
1 March 2021
1 March 2021

Quick facts

Lead sponsorAssistance Publique - Hôpitaux de Paris
PhaseNA
StatusStatus unknown
Study typeINTERVENTIONAL
Allocationnon randomized
Designparallel
Maskingnone
Primary purposebasic science
Enrollment60
Start date1 June 2020
Primary completion1 March 2021
Estimated completion1 March 2021

Drugs / interventions tested

Conditions studied

Sponsor

Assistance Publique - Hôpitaux de Paris — full company profile →

Who can join

18 and older, any sex, with COVID-19 or SARS-CoV-2 Infection. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The current pandemic caused by the newly identified coronavirus responsible for COVID-19 is a major threat to our populations and societies. Hypothesis/Objective The acquisition of protective immunity at the level of the individual, either through vaccination or natural resolution of the infection, progressively leads at the level of the population to the reduction of the fraction of the population that can be productively infected and transmit the virus, hence, leading to the diminution of the rate of transmission, a phenomenon called herd immunity. Herd immunity was proposed as a strategy to control the infection. However, it remains difficult to model group immunity given the limited knowledge of the interaction between the host immune system with the virus, whose capacity to evolve in face of a neutralizing response is also not known. It is therefore important to acquire a better knowledge of the immunological memory that ensures the resolution of COVID-19 after SARS-CoV2 infection. Method To study single-cell B and T memory cells specific for the anti-SARS-CoV-2 response and characterize somatic mutations of immunoglobulin genes and TCR, in hospitalized and symptomatic patients and in patients cured of SARS-CoV-2.

Publications & conference data

8 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Maturation and persistence of the anti-SARS-CoV-2 memory B cell response.
    Sokal A, Chappert P, Barba-Spaeth G, Roeser A, et al · · 2021 · cited 306× · PMID 33571429 · DOI 10.1016/j.cell.2021.01.050
  2. mRNA vaccination of naive and COVID-19-recovered individuals elicits potent memory B cells that recognize SARS-CoV-2 variants.
    Sokal A, Barba-Spaeth G, Fernández I, Broketa M, et al · · 2021 · cited 128× · PMID 34614412 · DOI 10.1016/j.immuni.2021.09.011
  3. Analysis of mRNA vaccination-elicited RBD-specific memory B cells reveals strong but incomplete immune escape of the SARS-CoV-2 Omicron variant.
    Sokal A, Broketa M, Barba-Spaeth G, Meola A, et al · · 2022 · cited 46× · PMID 35483354 · DOI 10.1016/j.immuni.2022.04.002
  4. Human type I IFN deficiency does not impair B cell response to SARS-CoV-2 mRNA vaccination.
    Sokal A, Bastard P, Chappert P, Barba-Spaeth G, et al · · 2023 · cited 31× · PMID 36342455 · DOI 10.1084/jem.20220258
  5. Venous thrombosis epidemiology, pathophysiology, and anticoagulant therapies and trials in severe acute respiratory syndrome coronavirus 2 infection.
    Obi AT, Barnes GD, Napolitano LM, Henke PK, et al · · 2021 · cited 30× · PMID 32916371 · DOI 10.1016/j.jvsv.2020.08.030
  6. Immune Responses after a Third Dose of mRNA Vaccine Differ in Virus-Naive versus SARS-CoV-2- Recovered Dialysis Patients.
    Attias P, Azzaoui I, El Karoui K, de La Selle A, et al · · 2022 · cited 14× · PMID 35764393 · DOI 10.2215/cjn.00830122
  7. COVID-19 immunotherapy: Treatment based on the immune cell-mediated approaches.
    Zavvar M, Yahyapoor A, Baghdadi H, Zargaran S, et al · · 2022 · cited 13× · PMID 35248946 · DOI 10.1016/j.intimp.2022.108655
  8. Qualitative monitoring of SARS-CoV-2 mRNA vaccination in humans using droplet microfluidics.
    Broketa M, Sokal A, Mor M, Canales-Herrerias P, et al · · 2023 · cited 6× · PMID 37252802 · DOI 10.1172/jci.insight.166602

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