NCT05268679

Brief Summary

Clinical studies indicate a decrease in vaccine efficacy in certain immunocompromised populations (kidney transplant recipients, patients undergoing chemotherapy). It was recently reported that only 18% to 49% of heart transplant recipients developed antibodies after 2 doses of BNT162b2 vaccine. Following the published results, it is currently recommended to use 3 doses in organ transplant recipients who have not contracted COVID-19 and 2 doses in those who have been infected. The effectiveness of this strategy is not yet sufficiently evaluated in heart transplant recipients. Moreover, the factors associated with the humoral and cellular response, the kinetics and durability of the humoral response, the occurrence of the cellular immune response and the tolerance of the vaccine are not well known in this population. To provide answers to these different questions, we set ourselves the objective of evaluating the humoral and cellular response to messenger RNA (mRNA) vaccines in heart transplant recipients followed at Bichat Hospital.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
190

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Mar 2022

Shorter than P25 for all trials

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

First Submitted

Initial submission to the registry

March 4, 2022

Completed
3 days until next milestone

First Posted

Study publicly available on registry

March 7, 2022

Completed
Same day until next milestone

Study Start

First participant enrolled

March 7, 2022

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 30, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 30, 2022

Completed
Last Updated

January 3, 2024

Status Verified

December 1, 2023

Enrollment Period

9 months

First QC Date

March 4, 2022

Last Update Submit

December 30, 2023

Conditions

Keywords

Heart transplant recipientsCovid-19 virus infectionSARS-CoV-2 vaccineVaccine EffectivenessHumoral immune responseCellular Immune Response

Outcome Measures

Primary Outcomes (2)

  • Anti-SARS-CoV-2 neutralizing antibody levels

    Anti-SARS-CoV-2 neutralizing antibody levels over time, with quantification of immunoglobulin G (IgG) directed against the Receptor Binding Domain (RBD) of the Spike (S) protein

    Change from baseline to month 6

  • Efficacy of COVID-19 Vaccines against SARS-CoV-2 infection

    Search for memory T lymphocytes specific to SARS-CoV-2 using an Elispot interferon γ test during the inclusion visit

    Day 0

Secondary Outcomes (3)

  • Efficacy of COVID-19 vaccines against SARS-CoV-2 infection

    Month 6

  • Safety of COVID-19 vaccines

    Day 0

  • Kinetics of the humoral response

    Change from baseline to month 6

Study Arms (1)

Heart transplant recipients

Heart transplant recipients followed at Bichat Hospital and who were offered vaccination against SARS-CoV-2, regardless of whether they agreed to be vaccinated or not.

Other: Biospecimen CollectionOther: QuestionnaireOther: Electronic Health Record Review

Interventions

A blood of a sample of 2 x 7 mL will be collected for the analysis of the anti-SARS-CoV-2 T-cell response during a scheduled check-up as part of their routine follow-up

Heart transplant recipients

Patients who have received SARS-CoV-2 vaccination will be asked to complete the Vaccine tolerance questionnaire

Heart transplant recipients

For heart transplant recipients who were offered vaccination against SARS-CoV-2 medical records will be reviewed retrospectively.

Heart transplant recipients

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Heart transplant recipients followed at Bichat Hospital and who were offered vaccination against SARS-CoV-2, regardless of whether they agreed to be vaccinated or not.

You may qualify if:

  • Heart transplant patients followed at Bichat Hospital
  • Aged 18 or older
  • Informed and having expressed their non-objection to participation in this research
  • Able to give their agreement

You may not qualify if:

  • Minors
  • Heart transplant recipients who have expressed their opposition to their participation
  • Legally protected adult
  • Persons under the State Medical Assistance (AME)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

AP-HP, Bichat-Claude Bernard Hospital

Paris, 75018, France

Location

Related Publications (2)

  • Peled Y, Ram E, Lavee J, Sternik L, Segev A, Wieder-Finesod A, Mandelboim M, Indenbaum V, Levy I, Raanani E, Lustig Y, Rahav G. BNT162b2 vaccination in heart transplant recipients: Clinical experience and antibody response. J Heart Lung Transplant. 2021 Aug;40(8):759-762. doi: 10.1016/j.healun.2021.04.003. Epub 2021 Apr 21.

    PMID: 34034958BACKGROUND
  • Itzhaki Ben Zadok O, Shaul AA, Ben-Avraham B, Yaari V, Ben Zvi H, Shostak Y, Pertzov B, Eliakim-Raz N, Abed G, Abuhazira M, Barac YD, Mats I, Kramer MR, Aravot D, Kornowski R, Ben-Gal T. Immunogenicity of the BNT162b2 mRNA vaccine in heart transplant recipients - a prospective cohort study. Eur J Heart Fail. 2021 Sep;23(9):1555-1559. doi: 10.1002/ejhf.2199. Epub 2021 May 14.

    PMID: 33963635BACKGROUND

MeSH Terms

Conditions

COVID-19

Interventions

Surveys and Questionnaires

Condition Hierarchy (Ancestors)

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

Intervention Hierarchy (Ancestors)

Data CollectionEpidemiologic MethodsInvestigative TechniquesHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public Health

Study Officials

  • Richard DORENT, MD

    AP-HP, Bichat-Claude Bernard Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
OTHER
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 4, 2022

First Posted

March 7, 2022

Study Start

March 7, 2022

Primary Completion

November 30, 2022

Study Completion

November 30, 2022

Last Updated

January 3, 2024

Record last verified: 2023-12

Locations