CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 323 enrolled
Drug / intervention
Comirnaty (BTN162b2) +1 morebiological
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05160766
NCT05160766Phase 2Completed

A Multinational, Phase 2, Randomised, Adaptive Protocol to Evaluate Immunogenicity and Reactogenicity of Different COVID-19 Vaccines Administration in Older Adults (≥75) Already Vaccinated Against SARS-COV-2 (EU-COVAT-1_AGED)

Oliver Cornely, MD·interventional·Posted Dec 16, 2021·Updated May 20, 2025

In Brief

A Phase 2 clinical trial evaluating Comirnaty (BTN162b2) and Spikevax (mRNA-1273) for Prevention of COVID-19. Completed, enrolled 323 participants across 9 sites in 4 countries.

Detailed Summary

This is a randomised controlled, adaptive, multicentre Phase II protocol evaluating different booster strategies in individuals aged 75 years and older already vaccinated against SARS-CoV-2. Part A of this trial foresees testing of different vaccines as a 3rd vaccination dose (first booster) for comparative assessment of their immunogenicity and safety against SARS-CoV-2 wild-type and variants in the elderly, a usually neglected population. Part B of this trial foresees testing of different vaccines as a 4th vaccination dose (second booster) for comparative assessment of their immunogenicity and safety against SARSCoV-2 wild-type and variants in the identical population.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesGermany, Lithuania, Norway, Spain

Timeline

Phase 2CompletedFinished
20222023202420252026
First PostedDec 16, 2021
Enrollment StartNov 8, 2021
Primary CompletionOct 1, 2022
Study CompletionSep 13, 2023
TodayJul 2, 2026
Enrollment to primary: 11 monthsPosted 4.5 years ago

Interventions

Comirnaty (BTN162b2)biological

Single booster shot (3rd dose in Part A and 4th dose in Part B)

Spikevax (mRNA-1273)biological

Single booster shot (3rd dose in Part A and 4th dose in Part B)