Immunogenicity and Safety Study of SCB-2019 Vaccine as a Booster to COVID-19 Vaccine in Adults

NCT ID: NCT05188677

Last Updated: 2023-08-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

1831 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-13

Study Completion Date

2023-06-06

Brief Summary

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The purpose of this study is to assess the immunogenicity and safety of the investigational SCB-2019 vaccine, administered as a booster dose, to adults who:

* Received primary series with one of the selected authorized or investigational COVID-19 vaccines at least 3 months prior to enrollment.
* Received primary series and a booster dose of CoronaVac at least 3 months prior to enrollment.

Detailed Description

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Conditions

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COVID-19

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Group 1a (primary series: Comirnaty)

participants will receive one dose of SCB-2019 vaccine on Day 1

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 1b (primary series: Comirnaty)

participants will receive one dose of Comirnaty vaccine on Day 1

Group Type ACTIVE_COMPARATOR

Comirnaty Vaccine

Intervention Type BIOLOGICAL

intramuscular injection

Group 2a (primary series: Vaxzevria)

participants will receive one dose of SCB-2019 vaccine on Day 1

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 2b (primary series: Vaxzevria)

participants will receive one dose of Vaxzevria vaccine on Day 1

Group Type ACTIVE_COMPARATOR

Vaxzevria Vaccine

Intervention Type BIOLOGICAL

intramuscular injection

Group 3a (primary series: CoronaVac)

participants will receive one dose of SCB-2019 vaccine on Day 1

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 3b (primary series: CoronaVac)

participants will receive one dose of CoronaVac vaccine on Day 1

Group Type ACTIVE_COMPARATOR

CoronaVac Vaccine

Intervention Type BIOLOGICAL

intramuscular injection

Group 4a (primary series and booster dose CoronaVac)

participants will receive one dose of SCB-2019 vaccine on Day 1

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 4b (primary series and booster dose CoronaVac)

participants will receive one dose of CoronaVac on Day 1;

Group Type ACTIVE_COMPARATOR

CoronaVac Vaccine

Intervention Type BIOLOGICAL

intramuscular injection

Group 4c (primary series and booster dose CoronaVac)

participants will receive a half dose of SCB-2019 vaccine on Day 1

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 5a (primary series: CoronaVac)

participants will receive a dose of 2-vial presentation of SCB-2019 vaccine

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Group 5b (primary series: CoronaVac)

participants will receive a dose of 3-vial presentation of SCB-2019 vaccine

Group Type EXPERIMENTAL

Candidate vaccine, SCB-2019

Intervention Type BIOLOGICAL

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Interventions

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Candidate vaccine, SCB-2019

a recombinant SARS-CoV-2 trimeric S-protein subunit vaccine for COVID-19; intramuscular injection

Intervention Type BIOLOGICAL

Comirnaty Vaccine

intramuscular injection

Intervention Type BIOLOGICAL

Vaxzevria Vaccine

intramuscular injection

Intervention Type BIOLOGICAL

CoronaVac Vaccine

intramuscular injection

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Male and female participants at least 18 years of age;
* Individuals willing and able to comply with study requirements, including all scheduled visits, vaccinations, laboratory tests, and other study procedures;
* Individuals willing and able to give an informed consent, prior to screening;
* Healthy participants or participants with pre-existing medical conditions who are in a stable medical condition;
* Individuals who received primary vaccination series with one of the selected COVID-19 vaccines (Comirnaty, Vaxzevria, or CoronaVac) ≥3 months prior to enrollment; or received primary series and a booster dose (≥3 months after primary series) of CoronaVac, ≥3 months prior to enrollment.

Exclusion Criteria

* Individuals with fever \>37.5°C (axillary), or any acute illness at baseline (Day 1) or within 3 days prior to randomization;
* Individuals with laboratory-confirmed SARS-CoV-2 infection at Visit 1 (determined by positive Rapid Antigen Test or RT-PCR);
* Individuals who have received an investigational or licensed COVID-19 vaccine prior to Day 1 (except for primary series with Comirnaty, Vaxzevria, CoronaVac vaccines, or primary and booster dose of CoronaVac), or plan to receive COVID-19 vaccine during the study period;
* Individuals who have a history of severe adverse reaction associated with a vaccine or severe allergic reaction (e.g., anaphylaxis) to any component of the study vaccines;
* Individuals who have received any other investigational product within 30 days prior to Day 1 or intend to participate in another clinical study at any time during the conduct of this study.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Clover Biopharmaceuticals AUS Pty

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Las Piñas Doctors Hospital

Las Piñas, National Capital Region, Philippines

Site Status

Manila Doctors Hospital

Manila, National Capital Region, Philippines

Site Status

Countries

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Philippines

References

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Roa CC Jr, de Los Reyes MRA, Plennevaux E, Smolenov I, Hu B, Gao F, Ilagan H, Ambrosino D, Siber G, Clemens R. Superior Boosting of Neutralizing Titers Against Omicron SARS-CoV-2 Variants by Heterologous SCB-2019 Vaccine vs a Homologous Booster in CoronaVac-Primed Adults. J Infect Dis. 2023 Nov 2;228(9):1253-1262. doi: 10.1093/infdis/jiad262.

Reference Type DERIVED
PMID: 37439701 (View on PubMed)

Other Identifiers

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CLO-SCB-2019-015

Identifier Type: -

Identifier Source: org_study_id

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