A Study to Evaluate the Immunogenicity and Safety of A Recombinant Protein COVID-19 Vaccine as Booster Vaccines

July 4, 2023 updated by: Sinocelltech Ltd.

A Phase II Clinical Trial to Evaluate the Immunogenicity and Safety of SCTV01E-2 (COVID-19 Beta/Omicron (BA.1/BQ.1.1/XBB.1) Variants S-Trimer Vaccine) in Population Previously Vaccinated With mRNA COVID-19 Vaccine

This study is a phase Ⅱ clinical trial to evaluate the safety and immunogenicity of SCTV01E-2 in people of different ages who had been vaccinated with COVID-19 vaccines. A total of at least 600 subjects aged 3 years and older who were previously vaccinated with domestically licensed SARS-CoV-2 vaccines with recommended doses and immunization schedules are planned to be enrolled. Group A included 400 patients aged 18 years and above, and group B included 200 patients aged 3-17 years.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

For participants in Group A, they will be randomized to receive SCTV01E or SCTV01E-2 in a ratio of 1:1. For participants in Group B, they will all receive SCTV01E-2.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
600

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • 1. Aged ≥3 years old when signing ICF;
  • 2. Participants who were vaccinated with licenced COVID-19 vaccines with recommended doses and immune schedule, and the interval between the last dose and ICF is ≥6 months.
  • 3. The participant and/or his/her legal guardians or entrusted person can sign the written ICF, and can fully understand the trial procedure, the risk of participating in the trial, and other interventions that can be selected if they do not participate in the trial;
  • 4. The participant and/or his/her legal guardians or entrusted person have the ability to read, understand, and fill in record cards;
  • 5. Healthy participants or participants with pre-existing medical conditions who are in stable condition. A stable medical condition is defined as disease not requiring significant change in therapy or no need for hospitalization as a consequence of worsening disease state for at least 3 months prior to enrollment;
  • 6. Fertile men and women of childbearing potential voluntarily agree to take effective contraceptive measures from signing ICF to 6 months after the study vaccination; the pregnancy test results of women of childbearing potential are negative on screening.

Exclusion Criteria:

  • 1. Presence of fever within 72 hours before the study vaccination (for participants >14 years old, axillary temperature ≥37.3℃; for participants ≤14 years old, axillary temperature ≥37.5℃;);
  • 2. A positive result of antigen test or nucleic acid test for SARS-CoV-2 during the screening period;
  • 3. A positive result of SARS-CoV-2 IgM test;
  • 4. Known history of SARS-CoV-2 infection within 6 months before ICF;
  • 5. A history of sereve allergic reactions such as severe skin eczema, dyspnea, laryngeal edema, and angioneurotic edema, or allergic reactions to the study vaccines and its ingredient;
  • 6. A medical or family history of seizure, epilepsy and psychosis;
  • 7. Participants who is at the acute state of disease, such as acute onset of chronic heart failure, acute sore throat, hypertensive encephalopathy, acute pneumonia, acute renal insufficiency, acute cholecystitis;
  • 8. Contraindications for intramuscular injection or intravenous blood sampling, including thrombocytopenia and other blood coagulation disorders;
  • 9. Patients on antituberculosis therapy;
  • 10. Participants vaccinated with influenza vaccine within 14 days or with other vaccines within 28 days before the study vaccination;
  • 11. Participants who received other investigational drugs within 1 month before the study vaccination;
  • 12. Participants who received any immunoglobulin or blood products in the previous 3 months before enrollment, or plan to receive similar products during the study;
  • 13. Those who donated blood or had blood loss (≥450 mL) within 3 months before the vaccination or plan to donate blood during the study period;
  • 14. Those who are pregnant or breast-feeding or plan to be pregnant during the study period;
  • 15. Those who plan to donate ovum or sperms during the study period;
  • 16. Those who cannot follow the trial procedures, or cannot cooperate to complete the study due to planned relocation or long-term outing;
  • 17. Those unsuitable for participating in the clinical trial as determined by the investigator because of other abnormalities that are likely to confuse the study results, or non-conformance with the maximal benefits of the participants.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Group A:SCTV01E-2
one dose of SCTV01E-2 on D0
Biological: SCTV01E-2
intramuscular injection
Active Comparator: Group A:SCTV01E
one dose of SCTV01E on D0
Biological: SCTV01E
intramuscular injection
Experimental: Group B:SCTV01E-2
one dose of SCTV01E-2 on D0
Biological: SCTV01E-2
intramuscular injection

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Geometric mean titers (GMT) of neutralizing antibodies against SARS-CoV-2 dominant epidemic variant on D14.
Time Frame: day 14 after the study vaccination
day 14 after the study vaccination
Seroresponse Rate (SRR) of neutralizing antibodies against SARS-CoV-2 dominant epidemic variant on D14.
Time Frame: day 14 after the study vaccination
day 14 after the study vaccination

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
GMT of neutralizing antibodies against other SARS-CoV-2 variants on D14.
Time Frame: Day 14 after the study vaccination
Day 14 after the study vaccination
SRR of neutralizing antibodies against other SARS-CoV-2 variants on D14.
Time Frame: Day 14 after the study vaccination
Day 14 after the study vaccination
GMT and SRR of neutralizing antibodies against SARS-CoV-2 variants on D180.
Time Frame: day 14 after the study vaccination
day 14 after the study vaccination
Incidence and severity of solicited Adverse Events (AEs) of SCTV01E from D0 to D7.
Time Frame: Day 0 to Day 7 after the study vaccination
Day 0 to Day 7 after the study vaccination
Incidence and severity of all unsolicited AEs of SCTV01E from D0 to D28.
Time Frame: Day 0 to Day 28 after the study vaccination
Day 0 to Day 28 after the study vaccination
Incidence and severity of Serious Adverse Events (SAEs) and Adverse Event of Special Interests (AESIs) of SCTV01E within 365 days.
Time Frame: Day 0 to Day 180 after the study vaccination
Day 0 to Day 180 after the study vaccination

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sinocelltech Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 10, 2023

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 10, 2023

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 10, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 4, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 4, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 6, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 6, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 4, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SCTV01E-2-CHN-1

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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