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A Study to Evaluate Safety, Tolerability, & Immunogenicity of Multiple Formulations of BNT162b2 Against COVID-19 in Healthy Adults

A PHASE 3, RANDOMIZED, OBSERVER-BLIND STUDY TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF MULTIPLE FORMULATIONS OF THE VACCINE CANDIDATE BNT162B2 AGAINST COVID 19 IN HEALTHY ADULTS 18 THROUGH 55 YEARS OF AGE

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04816669
Enrollment
629
Registered
2021-03-25
Start date
2021-04-01
Completion date
2021-12-02
Last updated
2022-12-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19, SARS-CoV-2 Infection

Keywords

COVID-19, Coronavirus, Vaccine, SARS-CoV-2, RNA Vaccine

Brief summary

This study will compare the safety and tolerability of lyophilized BNT162b2 presented in single dose vials to those of frozen-liquid BNT162b2 in multidose vials and determine whether the immune response is noninferior. Separately, the study will also describe the safety and immunogenicity of frozen-liquid BNT162b2 with lipid nanoparticle size at the upper end of specification and ready to use BNT162b2 (the immediate manufacturing precursor to the lyophilate). Additionally, the study will describe the safety and immunogenicity of an additional dose of frozen liquid BNT162b2 to participants who already received the 2-dose schedule of lyophilized BNT162b2. * 2-dose schedule (separated by 21 days) * At a dose of 30µg (as studied in the Phase 2/3 study C4591001) * In healthy adults 18 through 55 years of age * The duration of the study for each participant will be approximately 2 months (3 visits in total) * The study will be conducted in the United States

Interventions

BIOLOGICALBNT162b2

Intramuscular injection

Sponsors

Pfizer
CollaboratorINDUSTRY
BioNTech SE
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Male or female participants 18 - 55 years of age, inclusive, at Visit 1, (Day 1). * Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures. * Healthy participants who are determined by medical history, physical examination (if required), and clinical judgment of the investigator to be eligible for inclusion in the study. Note: Healthy participants with pre-existing stable disease, defined as disease not requiring significant change in therapy or hospitalization for worsening disease during the 6 weeks before enrolment, can be included. * Capable of giving personal signed informed consent, which includes compliance with the requirements and restrictions listed in the ICD and in the protocol. * For Dose 3: Participants who received BOTH doses of the lyophilized formulation of BNT162b2 as part of the initial study.

Exclusion criteria

* Other medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behavior or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study. * Known infection with HIV, HCV, or HBV. * History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (eg, anaphylaxis) to any component of the study intervention(s). * Previous clinical (based on COVID-19 symptoms/signs alone, if a SARS-CoV-2 NAAT result was not available) or microbiological (based on COVID-19 symptoms/signs and a positive SARS-CoV-2 NAAT result) diagnosis of COVID-19. * Immunocompromised individuals with known or suspected immunodeficiency, as determined by history and/or laboratory/physical examination. * Bleeding diathesis or condition associated with prolonged bleeding that would, in the opinion of the investigator, contraindicate intramuscular injection. * Women who are pregnant or breastfeeding. * Previous vaccination with any coronavirus vaccine. * Receipt of medications intended to prevent COVID-19. * Individuals who receive treatment with radiotherapy or immunosuppressive therapy, including cytotoxic agents or systemic corticosteroids (if systemic corticosteroids are administered for ≥14 days at a dose of ≥20 mg/day of prednisone or equivalent), eg, for cancer or an autoimmune disease, or planned receipt throughout the study. Inhaled/nebulized, intra-articular, intrabursal, or topical (skin or eyes) corticosteroids are permitted. * Receipt of blood/plasma products or immunoglobulin, from 60 days before study intervention administration or planned receipt throughout the study. * Participation in other studies involving study intervention within 28 days prior to study entry and/or during study participation / Previous participation in other studies involving study intervention containing lipid nanoparticles (LNPs). * Previous participation in other studies involving study intervention containing lipid nanoparticles. * Investigator site staff or Pfizer/BioNTech employees directly involved in the conduct of the study, site staff otherwise supervised by the investigator, and their respective family members.

Design outcomes

Primary

MeasureTime frameDescription
Geometric Mean Titers (GMTs) of Full-Length S-Binding IgG Concentrations of Lyophilized Formulation SDVs and Frozen-Liquid Formulation in MDVs 1 Month After Dose 21 Month after Dose 2GMTs of full-length S-binding IgG level for lyophilized formulation in SDVs and frozen-Liquid formulation in MDVs were reported in this outcome measure as geometric mean concentration (GMCs) in descriptive data section. GMC and 95 percent (%) confidence interval (CI) were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ. Geometric mean ratio (GMR) was calculated as ratios of GMCs of BNT162b2 30 mcg lyophilized SDV and frozen-liquid MDV. GMR are reported in the statistical analysis section.
Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2Dose 1 up to 1 Month after Dose 2 (for approximately 2 months)An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or that was considered to be an important medical event. AEs included all non-SAEs and SAEs. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.
Percentage of Participants With Systemic Events Within 7 Days After Dose 2Within 7 days after Dose 2Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree C. Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 2 were reported.
Percentage of Participants With Systemic Events Within 7 Days After Dose 1Within 7 days after Dose 1Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree Celsius (C). Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 1 were reported.
Percentage of Participants With Local Reactions Within 7 Days After Dose 2Within 7 days after Dose 2Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after each vaccination.
Percentage of Participants With Local Reactions Within 7 Days After Dose 1Within 7 days after Dose 1Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after each vaccination.

Secondary

MeasureTime frameDescription
Geometric Mean Concentrations (GMCs) of Full-length S-binding IgG Levels at Baseline: Part 1Baseline (Before Dose 1 on Day 1)GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.
Geometric Mean Fold Rises (GMFRs) in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 1From Baseline (Before Dose 1 on Day 1) up to 1 Month after Dose 2GMFRs were defined as ratios of the geometric mean concentration of IgG at 1 month after Dose 2 to the geometric mean concentration of IgG at Baseline. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Other

MeasureTime frameDescription
GMTs of Full-Length S-Binding IgG Concentrations of Frozen Liquid With LNP Size at Upper End of Specification and Frozen-Liquid Formulation in MDVs 1 Month After Dose 21 Month after Dose 2GMTs of full-length S-binding IgG level for frozen liquid with LNP size at upper end of specification relative to frozen-liquid formulation in MDVs were reported in this outcome measure as GMCs in descriptive data section. GMC and 95 % CI were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ. GMR was calculated as ratios of GMCs of BNT162b2 30 mcg frozen liquid with LNP size at upper end of specification relative to frozen-liquid formulation in MDVs. GMR are reported in the statistical analysis section.
GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 2Baseline (Before Dose 1 on Day 1), 1 Month after Dose 2GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.
GMFRs in Full-length S-binding IgG Levels From Before Dose 3 to 1 Month After Dose 3From before Dose 3 to 1 Month after Dose 3GMFRs were defined as ratios of the geometric mean concentration of IgG from 1 month after Dose 3 to geometric mean concentration of IgG before Dose 3. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.
Number of Participants With AEs and SAEs From Dose 3 to 1 Month After Dose 3Dose 3 up to 1 Month after Dose 3 (1 month)An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or that was considered to be an important medical event. AEs included all non-SAEs and SAEs. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.
Percentage of Participants With Systemic Events Within 7 Days After Dose 3Within 7 days after Dose 3Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree Celsius (C). Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 3 were reported.
Percentage of Participants With Local Reactions Within 7 Days After Dose 3Within 7 days after Dose 3Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after Dose 3.
GMFRs in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 2From Baseline (Before Dose 1 on Day 1) up to 1 Month after Dose 2GMFRs were defined as ratios of the geometric mean concentration of IgG at 1 month after Dose 2 to the geometric mean concentration of IgG at Baseline. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.
GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 3Baseline, 1 Month after Dose 2, before Dose 3, and 1 Month after Dose 3GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Countries

United States

Participant flow

Pre-assignment details

This study was conducted in two parts: Part 1 and Part 2. Participants who received 2 doses of lyophilized formulation of BNT162b2 in Part 1, were offered to receive Dose 3 of frozen-liquid formulation.

Participants by arm

ArmCount
BNT162b2 Lyophilized SDV: Part 1
Participants were randomized to receive 30 mcg intramuscular dose of lyophilized BNT162b2 in SDV as 2-dose schedule separated by 19 to 23 days. Participants were followed up for safety for 1 month after second dose of vaccine Participants who consented to receive frozen formulation of BNT162b2, received 30 mcg intramuscular single dose of frozen liquid BNT162b2 in MDV at least 90 days post Vaccination 2. Participants were followed up for safety for 1 month after dose 3.
279
BNT162b2 Frozen-Liquid MDV: Part 1
Participants were randomized to receive 30 mcg intramuscular dose of frozen liquid BNT162b2 in MDV as 2-dose schedule separated by 21 days. Participants were followed up for safety for 1 month after second dose of vaccine.
280
BNT162b2 Frozen-Liquid With LNP Size: Part 2
Participants were randomized to receive 30 mcg intramuscular dose of frozen liquid BNT162b2 with LNP as 2-dose schedule separated by 21 days. Participants were followed up for safety for 1 month after second dose of vaccine.
35
BNT162b2 Frozen-Liquid With RTU Size: Part 2
Participants were randomized to receive 30 mcg intramuscular dose of frozen liquid BNT162b2 with RTU as 2-dose schedule separated by 21 days. Participants were followed up for safety for 1 month after second dose of vaccine.
35
Total629

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Part 1Adverse Event1100
Part 1Lost to Follow-up2200
Part 1Protocol Violation0100
Part 1Withdrawal by Subject1200
Part 2Lost to Follow-up0010
Part 2Other0010
Part 2Withdrawal by Subject0001

Baseline characteristics

CharacteristicBNT162b2 Lyophilized SDV: Part 1BNT162b2 Frozen-Liquid MDV: Part 1BNT162b2 Frozen-Liquid With LNP Size: Part 2BNT162b2 Frozen-Liquid With RTU Size: Part 2Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
279 Participants280 Participants35 Participants35 Participants629 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
57 Participants55 Participants5 Participants9 Participants126 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
219 Participants221 Participants30 Participants25 Participants495 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants4 Participants0 Participants1 Participants8 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants2 Participants0 Participants0 Participants2 Participants
Race (NIH/OMB)
Asian
26 Participants16 Participants6 Participants3 Participants51 Participants
Race (NIH/OMB)
Black or African American
19 Participants34 Participants2 Participants3 Participants58 Participants
Race (NIH/OMB)
More than one race
3 Participants5 Participants2 Participants0 Participants10 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
3 Participants2 Participants0 Participants0 Participants5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants1 Participants3 Participants
Race (NIH/OMB)
White
228 Participants220 Participants24 Participants28 Participants500 Participants
Sex: Female, Male
Female
143 Participants126 Participants20 Participants18 Participants307 Participants
Sex: Female, Male
Male
136 Participants154 Participants15 Participants17 Participants322 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 2790 / 2800 / 350 / 350 / 114
other
Total, other adverse events
262 / 279274 / 28033 / 3531 / 3587 / 114
serious
Total, serious adverse events
0 / 2790 / 2800 / 350 / 350 / 114

Outcome results

Primary

Geometric Mean Titers (GMTs) of Full-Length S-Binding IgG Concentrations of Lyophilized Formulation SDVs and Frozen-Liquid Formulation in MDVs 1 Month After Dose 2

GMTs of full-length S-binding IgG level for lyophilized formulation in SDVs and frozen-Liquid formulation in MDVs were reported in this outcome measure as geometric mean concentration (GMCs) in descriptive data section. GMC and 95 percent (%) confidence interval (CI) were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ. Geometric mean ratio (GMR) was calculated as ratios of GMCs of BNT162b2 30 mcg lyophilized SDV and frozen-liquid MDV. GMR are reported in the statistical analysis section.

Time frame: 1 Month after Dose 2

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1Geometric Mean Titers (GMTs) of Full-Length S-Binding IgG Concentrations of Lyophilized Formulation SDVs and Frozen-Liquid Formulation in MDVs 1 Month After Dose 24796.8 Unit per milliliter
BNT162b2 Frozen-Liquid MDV: Part 1Geometric Mean Titers (GMTs) of Full-Length S-Binding IgG Concentrations of Lyophilized Formulation SDVs and Frozen-Liquid Formulation in MDVs 1 Month After Dose 27031.6 Unit per milliliter
95% CI: [0.6, 0.77]
Primary

Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or that was considered to be an important medical event. AEs included all non-SAEs and SAEs. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Time frame: Dose 1 up to 1 Month after Dose 2 (for approximately 2 months)

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BNT162b2 Lyophilized SDV: Part 1Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2AEs16 Participants
BNT162b2 Lyophilized SDV: Part 1Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2SAEs0 Participants
BNT162b2 Frozen-Liquid MDV: Part 1Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2SAEs0 Participants
BNT162b2 Frozen-Liquid MDV: Part 1Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2AEs21 Participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2AEs4 Participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2SAEs0 Participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2AEs4 Participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) From Dose 1 to 1 Month After Dose 2SAEs0 Participants
Primary

Percentage of Participants With Local Reactions Within 7 Days After Dose 1

Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after each vaccination.

Time frame: Within 7 days after Dose 1

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Redness4.0 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Pain at Injection Site78.1 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Swelling3.6 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Redness5.0 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Pain at Injection Site87.1 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 1Swelling3.6 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Swelling0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Redness0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Pain at Injection Site85.7 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Redness2.9 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Pain at Injection Site68.6 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 1Swelling5.7 Percentage of participants
Primary

Percentage of Participants With Local Reactions Within 7 Days After Dose 2

Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after each vaccination.

Time frame: Within 7 days after Dose 2

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Redness3.6 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Pain at Injection Site71.2 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Swelling2.9 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Redness5.5 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Pain at Injection Site80.3 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 2Swelling3.3 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Swelling0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Redness0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Pain at Injection Site71.4 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Redness0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Pain at Injection Site62.9 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Local Reactions Within 7 Days After Dose 2Swelling8.6 Percentage of participants
Primary

Percentage of Participants With Systemic Events Within 7 Days After Dose 1

Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree Celsius (C). Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 1 were reported.

Time frame: Within 7 days after Dose 1

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Vomiting2.9 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fever >=38.0 degree C0 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Headache31.3 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fatigue46.4 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Diarrhea14.4 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened joint pain7.9 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Chills8.6 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened muscle pain16.5 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Headache44.3 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fever >=38.0 degree C3.2 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Diarrhea13.9 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened muscle pain27.1 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fatigue57.5 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Chills18.6 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1Vomiting2.1 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened joint pain15.4 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Headache37.1 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Diarrhea5.7 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Chills8.6 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened muscle pain11.4 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened joint pain11.4 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fatigue54.3 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Vomiting5.7 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fever >=38.0 degree C0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fever >=38.0 degree C0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Headache31.4 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Chills8.6 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened joint pain17.1 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Vomiting2.9 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Diarrhea11.4 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1New or worsened muscle pain20.0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 1Fatigue45.7 Percentage of participants
Primary

Percentage of Participants With Systemic Events Within 7 Days After Dose 2

Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree C. Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 2 were reported.

Time frame: Within 7 days after Dose 2

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened muscle pain32.8 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened joint pain16.8 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fever >=38.0 degree C6.2 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Headache48.2 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Chills27.7 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Vomiting3.6 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fatigue60.9 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Diarrhea12.8 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Diarrhea14.6 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened muscle pain43.1 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fatigue75.2 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Chills46.4 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Vomiting2.2 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened joint pain32.1 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Headache61.7 Percentage of participants
BNT162b2 Frozen-Liquid MDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fever >=38.0 degree C12.4 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Vomiting2.9 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Headache40.0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Chills22.9 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fever >=38.0 degree C2.9 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened muscle pain20.0 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fatigue48.6 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened joint pain11.4 Percentage of participants
BNT162b2 Frozen-Liquid With Lipid Nanoparticle (LNP) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Diarrhea8.6 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened joint pain28.6 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fatigue60.0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Headache40.0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Chills17.1 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Vomiting0 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Diarrhea14.3 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2New or worsened muscle pain37.1 Percentage of participants
BNT162b2 Frozen-Liquid With Ready-to-use (RTU) Size: Part 2Percentage of Participants With Systemic Events Within 7 Days After Dose 2Fever >=38.0 degree C5.7 Percentage of participants
Secondary

Geometric Mean Concentrations (GMCs) of Full-length S-binding IgG Levels at Baseline: Part 1

GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: Baseline (Before Dose 1 on Day 1)

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician. Overall Number of Participants Analyzed: participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1Geometric Mean Concentrations (GMCs) of Full-length S-binding IgG Levels at Baseline: Part 12.2 Unit per milliliter
BNT162b2 Frozen-Liquid MDV: Part 1Geometric Mean Concentrations (GMCs) of Full-length S-binding IgG Levels at Baseline: Part 12.2 Unit per milliliter
Secondary

Geometric Mean Fold Rises (GMFRs) in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 1

GMFRs were defined as ratios of the geometric mean concentration of IgG at 1 month after Dose 2 to the geometric mean concentration of IgG at Baseline. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: From Baseline (Before Dose 1 on Day 1) up to 1 Month after Dose 2

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician. Overall Number of Participants Analyzed: participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1Geometric Mean Fold Rises (GMFRs) in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 12189.0 Fold rise
BNT162b2 Frozen-Liquid MDV: Part 1Geometric Mean Fold Rises (GMFRs) in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 13194.0 Fold rise
Other Pre-specified

GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 3

GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: Baseline, 1 Month after Dose 2, before Dose 3, and 1 Month after Dose 3

Population: Evaluable immunogenicity population:Participants eligible and randomized,received 2 doses of lyophilized SDV,with Dose 2 received within 19 to 42 days after Dose 1,received Dose 3 of frozen liquid MDV,had at least 1 valid immunogenicity result within 28 to 42 days after Dose 3,negative for both SARS-CoV-2 tests at Day 1,1 month post Dose 3 visits, had no other important protocol deviations determined by clinician. Here, n= participants evaluable for specific timepoint.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 3Baseline2.1 Unit per milliliter
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 31 Month after Dose 24612.2 Unit per milliliter
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 3Before Dose 3874.4 Unit per milliliter
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-Length S-Binding IgG Levels at Baseline, 1 Month After Dose 2, Before Dose 3, and 1 Month After Dose 31 Month after Dose 314006.7 Unit per milliliter
Other Pre-specified

GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 2

GMCs of full-length S-binding IgG levels were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: Baseline (Before Dose 1 on Day 1), 1 Month after Dose 2

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 2Baseline2.3 Unit per milliliter
BNT162b2 Lyophilized SDV: Part 1GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 21 Month after Dose 27773.3 Unit per milliliter
BNT162b2 Frozen-Liquid MDV: Part 1GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 2Baseline3.3 Unit per milliliter
BNT162b2 Frozen-Liquid MDV: Part 1GMCs of Full-length S-binding IgG Levels at Baseline and 1 Month After Dose 2: Part 21 Month after Dose 26839.9 Unit per milliliter
Other Pre-specified

GMFRs in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 2

GMFRs were defined as ratios of the geometric mean concentration of IgG at 1 month after Dose 2 to the geometric mean concentration of IgG at Baseline. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: From Baseline (Before Dose 1 on Day 1) up to 1 Month after Dose 2

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1GMFRs in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 23339.1 Fold rise
BNT162b2 Frozen-Liquid MDV: Part 1GMFRs in Full-length S-binding IgG Levels From Baseline to 1 Month After Dose 2: Part 22072.1 Fold rise
Other Pre-specified

GMFRs in Full-length S-binding IgG Levels From Before Dose 3 to 1 Month After Dose 3

GMFRs were defined as ratios of the geometric mean concentration of IgG from 1 month after Dose 3 to geometric mean concentration of IgG before Dose 3. GMFRs were calculated by exponentiating the mean logarithm of fold rises and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ.

Time frame: From before Dose 3 to 1 Month after Dose 3

Population: Evaluable immunogenicity population:Participants who were eligible and randomized,received 2 doses of lyophilized SDV,with Dose 2 received within 19 to 42 days after Dose 1,received Dose 3 of frozen liquid MDV,had at least 1 valid immunogenicity result within 28 to 42 days after Dose 3,were negative for both SARS-CoV-2 tests at Day 1 and 1 month post-Dose 3 visits, and had no other important protocol deviations as determined by clinician.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1GMFRs in Full-length S-binding IgG Levels From Before Dose 3 to 1 Month After Dose 316.0 Fold rise
Other Pre-specified

GMTs of Full-Length S-Binding IgG Concentrations of Frozen Liquid With LNP Size at Upper End of Specification and Frozen-Liquid Formulation in MDVs 1 Month After Dose 2

GMTs of full-length S-binding IgG level for frozen liquid with LNP size at upper end of specification relative to frozen-liquid formulation in MDVs were reported in this outcome measure as GMCs in descriptive data section. GMC and 95 % CI were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student t distribution). Assay results below the LLOQ were set to 0.5\*LLOQ. GMR was calculated as ratios of GMCs of BNT162b2 30 mcg frozen liquid with LNP size at upper end of specification relative to frozen-liquid formulation in MDVs. GMR are reported in the statistical analysis section.

Time frame: 1 Month after Dose 2

Population: Evaluable immunogenicity population: Participants who were eligible and randomized, received 2 doses of vaccine, with Dose 2 received within 19 to 42 days after Dose 1, had at least 1 valid immunogenicity result within 28 to 42 days after Dose 2, were negative for both SARS-CoV-2 tests at both Day 1 and 1 month post-Dose 2 visits, and had no other important protocol deviations as determined by clinician.

ArmMeasureValue (GEOMETRIC_MEAN)
BNT162b2 Lyophilized SDV: Part 1GMTs of Full-Length S-Binding IgG Concentrations of Frozen Liquid With LNP Size at Upper End of Specification and Frozen-Liquid Formulation in MDVs 1 Month After Dose 27773.3 Unit per milliliter
BNT162b2 Frozen-Liquid MDV: Part 1GMTs of Full-Length S-Binding IgG Concentrations of Frozen Liquid With LNP Size at Upper End of Specification and Frozen-Liquid Formulation in MDVs 1 Month After Dose 26839.9 Unit per milliliter
95% CI: [0.77, 1.68]
Other Pre-specified

Number of Participants With AEs and SAEs From Dose 3 to 1 Month After Dose 3

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or that was considered to be an important medical event. AEs included all non-SAEs and SAEs. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

Time frame: Dose 3 up to 1 Month after Dose 3 (1 month)

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BNT162b2 Lyophilized SDV: Part 1Number of Participants With AEs and SAEs From Dose 3 to 1 Month After Dose 3AEs10 Participants
BNT162b2 Lyophilized SDV: Part 1Number of Participants With AEs and SAEs From Dose 3 to 1 Month After Dose 3SAEs0 Participants
Other Pre-specified

Percentage of Participants With Local Reactions Within 7 Days After Dose 3

Local reactions were collected by the participant using an electronic diary. Local reactions included redness, swelling, and pain at injection site after Dose 3.

Time frame: Within 7 days after Dose 3

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 3Redness6.5 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 3Swelling6.5 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Local Reactions Within 7 Days After Dose 3Pain at Injection Site70.1 Percentage of participants
Other Pre-specified

Percentage of Participants With Systemic Events Within 7 Days After Dose 3

Systemic events were reported using an electronic diary. Fever was defined as temperature \>=38.0 degree Celsius (C). Systemic events including fever, fatigue, headache, chills, new or worsened muscle pain, new or worsened joint pain, vomiting, and diarrhea after Dose 3 were reported.

Time frame: Within 7 days after Dose 3

Population: Safety population set included all randomized participants who received at least 1 dose of the study intervention. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Fever >=38.0 degree C8.4 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Fatigue63.6 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Headache52.3 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Chills39.3 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Vomiting2.8 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Diarrhea13.1 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3New or worsened muscle pain29.0 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3New or worsened joint pain16.8 Percentage of participants
BNT162b2 Lyophilized SDV: Part 1Percentage of Participants With Systemic Events Within 7 Days After Dose 3Use of antipyretic or pain medication35.5 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026