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Study identifier: NCT05543616 Synced from ClinicalTrials.gov · August 06, 2026
● Study status: Completed

A Study to Learn About Variant-Adapted COVID-19 RNA Vaccine Candidate(s) in Healthy Children

Condition: SARS-CoV-2 Virus · Severe Acute Respiratory Syndrome Coronavirus 2 · COVID-19  ·  Sponsor: BioNTech SE

PhasePhase 3
Planned participants4338
Who can joinAll sexes, 6 Months to 11 Years
Healthy volunteersYes

About this study

The purpose of this clinical trial is to learn about the safety, extent of the side effects, and immune responses of the study vaccine (called variant-adapted BNT162b2 RNA-based vaccine) in healthy children. The trial is divided into 5 individual studies or substudies based on age group and prior history of COVID-19 vaccinations. All participants in each of the 5 sub-studies will receive study vaccine as a shot depending on what group they are in. * Substudy A design: Phase 1 includes participants 6 months through less than 4 years 3 months of age who have not received a previous coronavirus vaccination (COVID-19 vaccine naïve) and will receive 3 doses of study vaccine as their initial series, followed by a fourth dose of study vaccine. Phase 2/3 includes participants 6 months through less than 5 years of age who have not received a previous coronavirus vaccination (COVID-19 vaccine naive) and will receive 1, 2, or 3 doses of study vaccine, depending on what group they are in. * Substudy B design: includes participants 6 months through less than 5 years of age who have either received 2 or 3 prior doses of BNT162b2 and will receive study vaccine as their third or fourth dose. * Substudy C design: Phase 1 includes participants 6 months through less than 5 years of age who have received 3 prior doses of BNT162b2 and will receive study vaccine as their fourth dose. * Substudy D design: includes participants 5 through less than12 years of age who have received 2 or 3 prior doses…

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

Always discuss trial participation with your own doctor first.

Locations (96)

UAB Child Health Research Unit (CHRU)Birmingham, Alabama, United States
Phoenix Children's HospitalPhoenix, Arizona, United States
Advanced Research Center Inc.Anaheim, California, United States
Kaiser PermanenteLos Angeles, California, United States
Kaiser Permanente OaklandOakland, California, United States
Stanford University Medical CenterPalo Alto, California, United States
Center for Clinical Trials, LLCParamount, California, United States
Peninsula Research AssociatesRolling Hills Estates, California, United States
Kaiser Permanente SacramentoSacramento, California, United States
PediaClinicHighlands Ranch, Colorado, United States
Yale University School of MedicineNew Haven, Connecticut, United States
Yale University- Yale Center for Clinical InvestigationNew Haven, Connecticut, United States

+ 84 more locations — full list on the registry record.

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