A Study to Learn About Bivalent COVID-19 RNA Vaccine Candidate(s) in Healthy Infants and Children

Study Overview
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Brief Summary
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The purpose of this clinical trial is to learn about the safety and immune responses of the study vaccine (called a bivalent BNT162b2 Omicron containing vaccine) in healthy infants and children. Sub study A of this clinical trial will test up to four different dose levels of the vaccine in infants who are under 6 months of age and have not previously received a coronavirus vaccination. This will be a 3- dose primary series of the study vaccine with each dose separated by 8 weeks.

Official Title
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A MASTER PROTOCOL TO INVESTIGATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF BIVALENT BNT162b2 RNA-BASED VACCINE CANDIDATE(S) IN HEALTHY INFANTS AND CHILDREN

Conditions
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COVID-19

Intervention / Treatment
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* Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 3 microgram dose
* Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 6 microgram dose
* Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 10 microgram dose
* Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 1 microgram dose


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy male or female participants 72 through 102 days of age, at the time of randomization (the day of birth is considered Day 1 of life). Male or female participants born at greater than 32 weeks of gestation. Exclusion Criteria: Receipt of any nonstudy vaccine within 14 days, before study intervention administration (Dose 1 only). Receipt of medications intended to prevent COVID-19. Previous or current diagnosis of MIS-C (Multisystem Inflammatory Syndrome In Children). History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g., anaphylaxis) to any component of the study intervention(s). Immunocompromised individuals with known or suspected immunodeficiency, as determined by history and/or laboratory/physical examination. Individuals with a history of autoimmune disease or an active autoimmune disease requiring therapeutic intervention. Bleeding diathesis or condition associated with prolonged bleeding that would, in the opinion of the investigator, contraindicate intramuscular injection. Other medical (e.g,. major known congenital malformation or serious chronic disorder such as seizures) or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study. Note: This includes both conditions that may increase the risk associated with study intervention administration or conditions that may interfere with the interpretation of study results. Previous vaccination with any non-study coronavirus vaccine. Individuals who receive treatment with immunosuppressive therapy, including cytotoxic agents or systemic corticosteroids. Receipt of blood/plasma products, immunoglobulin, or monoclonal antibodies (except palivizumab and hepatitis B immunoglobulin), from 60 days before study intervention administration, or receipt of any passive antibody therapy specific to COVID-19 from 90 days before study intervention administration, or planned receipt throughout the study. Receipt of other study intervention within 28 days prior to study entry through and including 28 days after the last dose of study intervention, with the exception of non-Pfizer interventional studies for prevention of COVID-19, which are prohibited throughout study participation. Investigator site staff directly involved in the conduct of the study and their family members, site staff otherwise supervised by the investigator, and sponsor and sponsor delegate employees directly involved in the conduct of the study and their family members. Children or grandchildren who are direct descendants of investigator site staff or sponsor and sponsor delegate employees directly involved in the conduct of the study.

Ages Eligible for Study
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Minimum Age: 72 Days
Maximum Age: 102 Days

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Non-Randomized
Intervention Model: Sequential Assignment
Interventional Model Description: Phase 1 open label sequential dose escalation study
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Dose level 1<br>Injection in the muscle at 0-, 8-, and 16-weeks. | Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 3 microgram dose<br>* Injection in the muscle<br>|
| Experimental: Dose level 2<br>Injection in the muscle at 0-, 8-, and 16-weeks | Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 6 microgram dose<br>* Injection in the muscle<br>|
| Experimental: Dose level 3<br>Infection in the muscle at 0-, 8- and 16- weeks | Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 10 microgram dose<br>* Injection in the muscle<br>|
| Experimental: Dose level 4<br>Injection in the muscle at 0-, 8- and 16- weeks | Biological: Bivalent BNT162b2 (original/Omicron BA.4/BA.5) 1 microgram dose<br>* Injection in the muscle<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Substudy A - Percentage of participants reporting local reactions in each dose level | Tenderness at the injection site, redness, and swelling as self-reported on electronic diaries. | For 7 days following Dose 1, Dose 2, Dose 3 | 
| Substudy A - Percentage of participants reporting systemic events in each dose level | Fever, decreased appetite, drowsiness, and irritability as self-reported on electronic diaries. | For 7 days following Dose 1, Dose 2 and Dose 3 | 
| Substudy A - Percentage of participants reporting adverse events in each dose level | As elicited by investigational site staff | Dose 1 through 1 month after Dose 3 | 
| Substudy A - Percentage of participants reporting serious adverse events in each dose level | As elicited by investigational site staff | Dose 1 through 6 months after Dose 3 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Substudy A - Geometric mean titers elicited by prophylactic bivalent BNT162b2 at each dose level in COVID-19 vaccine-naïve participants < 6 months of age | As measured at the central laboratory | At baseline (before Dose 1), 1 month after Dose 2, and 1 month after Dose 3 | 
| Substudy A - Geometric mean fold rise elicited by prophylactic bivalent BNT162b2 at each dose level in COVID-19 vaccine-naïve participants < 6 months of age | As measured at the central laboratory | At baseline (before Dose 1), 1 month after Dose 2, and 1 month after Dose 3 | 
| Substudy A - Percentage of participants with seroresponse elicited by prophylactic bivalent BNT162b2 at each dose level in COVID-19 vaccine-naïve participants < 6 months of age | As measured at the central laboratory | At baseline (before Dose 1), 1 month after Dose 2, and 1 month after Dose 3 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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SARS-CoV-2 infection, COVID-19, SARS-CoV-2 Virus, Severe Acute Respiratory Syndrome Coronavirus 2