NCT04750720

Brief Summary

The main objective of the study is to describe the temporal curve of COVID-19 IgG and neutralizing antibodies over 24 months in an identified population of patients who presented with SARS-CoV-2 virus infection. The secondary objectives are to characterize the kinetics of the antibodies according to the severity of the clinical presentation and patient's characteristics and to determine if the anti-SARS-CoV-2 antibodies retain their neutralizing capacity over time. A sub-study aims to describe the kinetic of neutralizing antibodies (in blood and nasal mucosa) after vaccination.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
187

participants targeted

Target at P50-P75 for not_applicable covid19

Timeline
Completed

Started Aug 2020

Typical duration for not_applicable covid19

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 27, 2020

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

February 9, 2021

Completed
2 days until next milestone

First Posted

Study publicly available on registry

February 11, 2021

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 7, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 7, 2022

Completed
Last Updated

December 30, 2025

Status Verified

December 1, 2025

Enrollment Period

1.5 years

First QC Date

February 9, 2021

Last Update Submit

December 22, 2025

Conditions

Keywords

Covid19SARS-CoV-2

Outcome Measures

Primary Outcomes (8)

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 0

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 3

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 6

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 9

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 12

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 15

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 18

  • Presence of specific anti-SARS-CoV-2 antibodies

    Presence of specific anti-SARS-CoV-2 antibodies in the different study groups at each sampling time

    Month 24

Secondary Outcomes (15)

  • Presence of specific anti-SARS-CoV-2 antibodies

    Month 12

  • Presence of specific anti-SARS-CoV-2 antibodies in subgroups

    Month 12

  • Presence of specific anti-SARS-CoV-2 antibodies in subgroups

    Month 24

  • Neutralizing capacity of anti-SARS-CoV-2 antibodies

    Month 6

  • Neutralizing capacity of anti-SARS-CoV-2 antibodies

    Month 12

  • +10 more secondary outcomes

Study Arms (1)

Group with biological samples

EXPERIMENTAL

Collection of biological samples (M0, M3, M6, M9, M12, M15, M18, M24) with associated data for the study of the kinetics of antibodies anti COVID-19 in subjects with documented SARS-CoV-2 infection (PCR and/or positive specific serology). In the vaccine sub-study: additional blood and nasopharyngeal samples before and after vaccination, up to 6 months.

Other: Sampling by venipuncture (and eventually by nasopharyngeal swab)

Interventions

Biological samples : * Serum and plasma from each donor for the purpose of performing (if applicable) the SARS-CoV-2 serologic test * PBMC (peripheral blood mononuclear cells) * Nasopharyngeal samples (not mandatory) Associated data : * Demographic data * Description of clinical manifestations related to SARS-CoV-2 infection * Notion of hospitalization/ambulatory follow-up Blood Fractioning * Serum and plasma aliquoted and stored under 250, 500 and 1000 µL (at -80°C) * Separation of PBMC on Lymphoprep and freezing in liquid nitrogen for subsequent analysis of immune system cells

Group with biological samples

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age \> 18
  • Having had a confirmed infection with CoV-2-SARS by RT-PCR and/or serology (IgM and/or IgG specific as significant)
  • Being vaccinated against anti-SARS-CoV-2 (vaccine sub-study)
  • Benefiting from a Social Security system
  • Having consented to participate in the study
  • Accepting regular follow-up for 24 months

You may not qualify if:

  • Protected person (under guardianship or trusteeship)
  • Person under the protection of justice
  • Person unable to express consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

CHU Orléans

Orléans, 45067, France

Location

Related Publications (6)

  • Corman VM, Landt O, Kaiser M, Molenkamp R, Meijer A, Chu DK, Bleicker T, Brunink S, Schneider J, Schmidt ML, Mulders DG, Haagmans BL, van der Veer B, van den Brink S, Wijsman L, Goderski G, Romette JL, Ellis J, Zambon M, Peiris M, Goossens H, Reusken C, Koopmans MP, Drosten C. Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR. Euro Surveill. 2020 Jan;25(3):2000045. doi: 10.2807/1560-7917.ES.2020.25.3.2000045.

    PMID: 31992387BACKGROUND
  • Rothan HA, Byrareddy SN. The epidemiology and pathogenesis of coronavirus disease (COVID-19) outbreak. J Autoimmun. 2020 May;109:102433. doi: 10.1016/j.jaut.2020.102433. Epub 2020 Feb 26.

    PMID: 32113704BACKGROUND
  • Fafi-Kremer S, Bruel T, Madec Y, Grant R, Tondeur L, Grzelak L, Staropoli I, Anna F, Souque P, Fernandes-Pellerin S, Jolly N, Renaudat C, Ungeheuer MN, Schmidt-Mutter C, Collongues N, Bolle A, Velay A, Lefebvre N, Mielcarek M, Meyer N, Rey D, Charneau P, Hoen B, De Seze J, Schwartz O, Fontanet A. Serologic responses to SARS-CoV-2 infection among hospital staff with mild disease in eastern France. EBioMedicine. 2020 Sep;59:102915. doi: 10.1016/j.ebiom.2020.102915. Epub 2020 Jul 31.

    PMID: 32747185BACKGROUND
  • Bolland W, Michel V, Planas D, Hubert M, Staropoli I, Guivel-Benhassine F, Porrot F, N'Debi M, Rodriguez C, Fourati S, Prot M, Planchais C, Hocqueloux L, Simon-Loriere E, Mouquet H, Prazuck T, Pawlotsky J-M, Bruel T, Schwartz O, Buchrieser J. High fusion and cytopathy of SARS-CoV-2 variant B.1.640.1. J Virol. 2024 Jan 23;98(1):e0135123. doi: 10.1128/jvi.01351-23. Epub 2023 Dec 13.

  • Clairon Q, Prague M, Planas D, Bruel T, Hocqueloux L, Prazuck T, Schwartz O, Thiebaut R, Guedj J. Modeling the kinetics of the neutralizing antibody response against SARS-CoV-2 variants after several administrations of Bnt162b2. PLoS Comput Biol. 2023 Aug 7;19(8):e1011282. doi: 10.1371/journal.pcbi.1011282. eCollection 2023 Aug.

  • Garcia L, Woudenberg T, Rosado J, Dyer AH, Donnadieu F, Planas D, Bruel T, Schwartz O, Prazuck T, Velay A, Fafi-Kremer S, Batten I, Reddy C, Connolly E, McElheron M, Kennelly SP, Bourke NM, White MT, Pelleau S. Kinetics of the SARS-CoV-2 Antibody Avidity Response Following Infection and Vaccination. Viruses. 2022 Jul 8;14(7):1491. doi: 10.3390/v14071491.

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Study Officials

  • Thierry PRAZUCK, MD

    CHU Orléans

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
SINGLE GROUP
Model Details: Collection of biological samples (M0, M3, M6, M9, M12, M15, M18, M24) with associated data for the study of the kinetics of antibodies anti COVID-19 in subjects with documented SARS-CoV-2 infection (PCR and/or positive specific serology)
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 9, 2021

First Posted

February 11, 2021

Study Start

August 27, 2020

Primary Completion

March 7, 2022

Study Completion

March 7, 2022

Last Updated

December 30, 2025

Record last verified: 2025-12

Locations