A PhaseⅡ Study to Evaluate the Safety and Immunogenicity of COVID-19 Vaccine
Study Details
Study Description
Brief Summary
To evaluate the immunogenicity and safety of a COVID-19 mRNA vaccine (ZSVG-02-O) in a healthy population aged 18 years and older.
Condition or Disease | Intervention/Treatment | Phase |
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Phase 2 |
Detailed Description
This study uses a randomized, blinded and controlled design, with age stratification of 18-59 years and ≥60 years , including the test vaccine at different doses (30 μg and 60 μg) and an active control vaccine.
A total of 980 subjects will be enrolled in this study. 490 subjects aged 18-59 years will be randomly assigned to cohort A1 (test vaccine dose 1), A2 (test vaccine dose 2) and A3 (control vaccine) for the 2-dose regimen (0,28-day) and to cohort A4 (test vaccine dose 1), A5 (test vaccine dose 2) and A6 (active control) for the 1-dose regimen in a ratio of 3:3:1:3:3:1. Another 490 subjects aged 60 years or older will be randomized to cohort B1 (test vaccine dose 1), B2 (test vaccine dose 2) and B3 (active control) for the 2-dose regimen (0,28-day), and cohort B4 (test vaccine dose 1), B5 (test vaccine dose 2) and B6 (control vaccine) for the 1-dose regimen in a ratio of 3:3:1:3:3:1.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Experimental: Test vaccine dose 1, 2 dose
|
Biological: COVID-19 mRNA Vaccine (ZSVG-02-O)
30 μg
|
Experimental: Test vaccine dose 2, 2 dose
|
Biological: COVID-19 mRNA Vaccine (ZSVG-02-O)
60 μg
|
Active Comparator: Active Comparator, 2 dose
|
Biological: COVID-19 Vaccine (Vero Cell) ,Inactivated
COVILO
|
Experimental: Test vaccine dose 1, 1 dose
|
Biological: COVID-19 mRNA Vaccine (ZSVG-02-O)
30 μg
|
Experimental: Test vaccine dose 2, 1 dose
|
Biological: COVID-19 mRNA Vaccine (ZSVG-02-O)
60 μg
|
Active Comparator: Active Comparator,1 dose
|
Biological: COVID-19 Vaccine (Vero Cell) ,Inactivated
COVILO
|
Outcome Measures
Primary Outcome Measures
- Geometric mean titre (GMT) and 4-fold increasing rate of neutralizing antibodies (NAbs) against SARS-CoV-2 on 28 days after full vaccination [28 days after full immunisation]
Geometric mean titre (GMT) and 4-fold increasing rate of neutralizing antibodies (NAbs) against SARS-CoV-2 on 28 days after full vaccination
Secondary Outcome Measures
- GMT and 4-fold increasing rate of NAbs against SARS-CoV-2 on 14 days after full vaccination [14 days after full immunisation]
GMT and 4-fold increasing rate of NAbs against SARS-CoV-2 on 14 days after full vaccination
- GMT and 4-fold increasing rate of NAbs against SARS-CoV-2 on 7 days after the first immunisation [7 days after the first immunisation]
GMT and 4-fold increasing rate of NAbs against SARS-CoV-2 on 7 days after the first immunisation
- Proportion of NAbs against SARS-CoV-2 titres≥1:16, ≥1:32 and ≥1:64 on 14 and 28 days after full immunisation [14 days and 28 days after full immunisation]
Proportion of NAbs against SARS-CoV-2 titres≥1:16, ≥1:32 and ≥1:64 on 14 and 28 days after full immunisation
- GMT, 4-fold increasing rate and ratio of antibody titres ≥1:16, ≥1:32 and ≥1:64 for NAbs against SARS-CoV-2 on 90 and 180 days after full immunisation [90 days and 180 days after full immunisation]
GMT, 4-fold increasing rate and ratio of antibody titres ≥1:16, ≥1:32 and ≥1:64 for NAbs against SARS-CoV-2 on 90 and 180 days after full immunisation
- Incidence and severity of adverse event (AE) within 30 minutes of each dose of vaccination [From the start of each immunisation until 30 minutes after each immunisation]
Incidence and severity of AE within 30 minutes of each dose of vaccination
- Incidence and severity of adverse reactions/events 0-14 days after each dose of vaccination [Day 0~Day 14 after each immunisation]
Incidence and severity of adverse reactions/events 0-14 days after each dose of vaccination
- Incidence and severity of adverse reactions/events 15-28 days after each dose of vaccination [Day 15~Day 28 after each immunisation]
Incidence and severity of adverse reactions/events 15-28 days after each dose of vaccination
- Incidence of serious adverse event (SAE) from the start of vaccination to 12 months after full vaccination [From the first dose of immunisation to 12 months after full immunisation]
Incidence of SAE from the start of vaccination to 12 months after full vaccination
Other Outcome Measures
- Changes in cytokine levels in Th1/Th2 cells induced by S protein [From before the first dose of immunisation to 28 days after full immunisation]
Cytokine [IFN-γ, interleukin(IL)-4, IL-2] levels in Th1/Th2 cells changed from pre-dose to 28 days after the full immunisation
- Cross-neutralisation against different SARS-CoV-2 variants [From the first dose of immunisation to 28 days after full immunisation]
The cross-neutralization effect of the mRNA vaccine (Omicron strain) against different SARS-CoV-2 variants (ancestral strain, Omicron strain and main circulating strain)
Eligibility Criteria
Criteria
Inclusion Criteria:
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Healthy male or female subjects aged ≥18 years of age;
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Subjects who are in good physical condition as judged by the investigator based on medical history, physical examination and clinical laboratory tests;
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Subjects who have not been previously vaccinated with a Covid-19 vaccine or who have received the last dose (total dose ≤ 3 doses) of a Covid-19 vaccine at least 6 months ago;
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Subjects who have not been previously infected with Covid-19, or whose nucleic acid or antigen test has turned negative for more than 3 months after previous Covid-19 infection;
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Subjects are able to understand the study procedures, have provide written informed consent, and are able to comply with the requirements of the clinical study protocol.
Exclusion criteria
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Axillary temperature ≥37.3°C;
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Positive polymerase chain reaction (PCR) test results within the last 48 hours;
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Women of childbearing potential with a positive urine pregnancy test result, or who are pregnant or breastfeeding, or who have not used effective contraception within 2 weeks prior to enrolment, or women and men who plan to have children within 12 months after full immunisation;
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History of epilepsy, convulsions or seizures, psychosis or family history of psychosis;
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Have a history of severe allergy to any medication or vaccination (e.g. acute allergic reaction, urticaria, skin eczema, dyspnoea, angioneurotic oedema, or abdominal pain) or allergy to known components of a Covid-19 vaccine;
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Have a history of hospital-diagnosed thrombocytopenia or other coagulation disorders;
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Have a history of hospital-diagnosed known immunological impairment or hypofunction;
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Subjects who have received whole blood, plasma or immunoglobulin therapy within 3 months;
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Known or suspected concomitant serious diseases, including: respiratory diseases, acute infections or active chronic diseases, liver and kidney diseases, severe diabetes, malignant tumours, infectious or allergic skin diseases, and HIV infection (with test report);
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Have serious cardiovascular diseases, cardiopulmonary failure, hypertension that cannot be controlled by medication (systolic blood pressure ≥ 140mmHg and/or diastolic blood pressure ≥ 90mmHg on physical examination);
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Received live attenuated vaccine within 1 month prior to vaccination or other vaccines within 14 days prior to vaccination;
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Participation in a clinical trial of another drug within 3 months prior to the first dose of vaccine or planning to participate in a clinical trial of another drug during the study period;
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Any other conditions that the investigator considers inappropriate for participation in this study.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Dengfeng Centre for Disease Control and Prevention and Control | Dengfeng | Henan | China | |
2 | Henan Provincial Centre for Disease Control and Prevention | Zhengzhou | Henan | China |
Sponsors and Collaborators
- CNBG-Virogin Biotech (Shanghai) Ltd.
Investigators
- Study Chair: Yunkai Yang, China National Biotec Group Company Limited
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- ZSVG-02-O-2022-P2