NCT05079165

Brief Summary

The goal of this retrospective study is to evaluate the proportion of seroconversion after 2 doses mRNA anti-SARS-CoV2 vaccination in a cohort of high risk liver transplanted patients. Seroprevalence is a secondary objective in order to identify seronegative patients with a history of COVID-19 (ie who lost antibodies) and seropositive patients with no history of COVID-19. The hypothesis is that the degree of immunosuppression is determinant on the seroconversion rate and therefore, although at higher risk of severe forms of COVID-19, liver transplanted patients have a lower chance of being protected after vaccination. Seroconversion rate in previously seronegative and with no history of COVID-19 liver transplanted patients is the main evaluation criteria. The factors associated with the absence of seroconversion will be identified as a potential tool to better adapt the vaccination strategy in this population. The rate of seroconversion after the 1st dose will also be evaluated. Safety of the 1st and 2nd injection will be reported as well as their value to predict seroconversion. A control group of patients listed for transplantation will also be included both in the seroprevalence and the seroconversion analysis. Persistance of the antibodies in long-term after transplantation and after transplantation for the patients who have been vaccinated before transplantation will also be reported.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
300

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jun 2021

Geographic Reach
1 country

1 active site

Status
unknown

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

June 1, 2021

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

October 14, 2021

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 15, 2021

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2022

Completed
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

November 30, 2022

Completed
Last Updated

February 3, 2022

Status Verified

October 1, 2021

Enrollment Period

9 months

First QC Date

October 14, 2021

Last Update Submit

February 2, 2022

Conditions

Keywords

COVID-19SARS-COV-2Coronavirus VaccineCOVID-19 PandemicCOVID-19 Virus DiseaseSARS-CoV-2 InfectionSolid organ transplantmRNA vaccineMODERNAliver transplantSerological testingserological responseSARS-CoV-2 mRNA vaccineAnti-SARS-CoV-2 IgG antibodies

Outcome Measures

Primary Outcomes (1)

  • Retrospective description of the serological response to the anti-SARS-CoV-2 mRNA vaccine

    Files analysed retrospectively from January 18, 2020 to April 30, 2021 will be examined]

Eligibility Criteria

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

Liver transplanted adult patients for \> 6 months after transplantation

You may qualify if:

  • Liver transplanted patients for \> 6 months after transplantation
  • Listed cirrhotic patients
  • Age \>18 years-old
  • Consent for vaccination with mRNA vaccine

You may not qualify if:

  • Vaccination with non mRNA anti-SARS-CoV-2 vaccine
  • Expressed opposition to participation to the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Service deChirurgie Générale Hépatique-Endocrinienne,et transplantation - Hôpitaux Universitaires de Strasbourg

Strasbourg, 67091, France

RECRUITING

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

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

Central Study Contacts

Saïd CHAYER, PhD, HDR

CONTACT

Study Design

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

Study Record Dates

First Submitted

October 14, 2021

First Posted

October 15, 2021

Study Start

June 1, 2021

Primary Completion

March 1, 2022

Study Completion

November 30, 2022

Last Updated

February 3, 2022

Record last verified: 2021-10

Locations