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A Safety and Immune Response Study to Evaluate Varying Doses of an mRNA Vaccine Against Coronavirus Disease 2019 (COVID-19) in Healthy Adults

COVID-19 Clinical Trial

Official title:
Exploratory, First Time in Human (FTIH), Observer-blind, Randomized, Controlled Study to Evaluate Safety, Reactogenicity and Immunogenicity of Various Doses of GlaxoSmithKline Biologicals SA's (GSK) Investigational Omicron Variant S Glycoprotein (mRNA-CR-04) Vaccine When Administered Intramuscularly in Healthy Adults 18 to 49 Years of Age

Clinical Trial Summary

The purpose of this study is to evaluate the safety, reactogenicity and immune responses of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) mRNA-CR-04 vaccine construct when administered in healthy adults previously vaccinated with SARS-CoV-2 mRNA vaccines.

Clinical Trial Description

There will be dose-escalation in part A of the study with sentinel dosing strategy implemented in each of 3 dosing levels (Group 1; 2; 3). At start, enrollment in Group 1 and 2 will occur simultaneously with the enrolment of 1st participant in Group 1. Each group will consist of 8 sentinel participants, with 6 receiving the mRNA-CR-04 vaccine and 2 receiving a placebo. The safety data from the sentinel participants in both groups, up to Day 8 post-vaccination, will be reviewed by the Internal Safety Review Committee (iSRC). If no safety signal is observed, vaccination of the non-sentinel participants in that group will continue. If there are no safety signals observed from the sentinel participants in Group 1 and Group 2, the enrollment and vaccination of the sentinel participants in Group 3 will begin. Part B of the study will commence only after all Part A participants have completed their Day 15 study visits and the Day 15 interim analysis is completed. In Part B, 2 doses of the mRNA-CR-04 vaccine will be evaluated. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05972993
Study type Interventional
Source GlaxoSmithKline
Contact
Status Active, not recruiting
Phase Phase 1
Start date August 7, 2023
Completion date October 15, 2024
View Details
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