Immunogenicity and Safety of Booster Immunization of ZF2001 After Inoculation With Two Doses of BBIBP-CorV

Study on the Immunogenicity and Safety of Booster Immunization of Recombinant Novel Coronavirus Vaccine (CHO Cells) After Inoculation With Two Doses of Inactivated Vaccine (BBIBP-CorV) in People Over 18 Years Old

Study objectives: To evaluate the immunogenicity and immunity persistence and safety of recombinant novel coronavirus vaccine (CHO cells) after booster immunization in populations vaccinated with two doses of marketed novel coronavirus inactivated vaccine (BBIBP-CorV).

Study method: For the subjects who have been vaccinated with two doses (the interval between two doses ≥ 3 weeks) of the novel coronavirus inactivated vaccine (BBIBP-CorV) for 3 to 9 months, 1 dose of the recombinant novel coronavirus vaccine (CHO cells) was administered. Blood samples were collected before booster immunization, 14 days, 30 days and 180 days after booster immunization for neutralizing antibody detection.

All AEs were collected within 1 month after the booster immunization. All SAEs were collected within 6 months after the booster immunization.

Study Overview

• Status: Recruiting
• Conditions: COVID-19
• Intervention / Treatment: Biological: Recombinant novel coronavirus vaccine (CHO cells)

Detailed Description

This trial plans to enroll 480 subjects, who will be divided into 3 groups according to the interval between booster immunization and basic immunization: group A (3-4 months), group B (5-6 months), group C (7-9 months) each with 160 subjects (including 120 subjects aged 18-59 years and 40 subjects aged 60 years and above).

The recombinant novel coronavirus vaccine (CHO cells) was thoroughly mixed and injected intramuscularly at the deltoid muscle of the upper arm according to the instructions. Blood samples were collected before booster immunization, 14 days, 30 days and 180 days after booster immunization for neutralizing antibody detection.

All AEs were collected within 1 month after the booster immunization. Solicited AEs (the following events occurring within 7 days of vaccination) :

Adverse events at the inoculation site (local) : pain, pruritus, redness, swelling, rash, induration; Non-inoculated site (systemic) adverse events: fever, headache, fatigue, diarrhea, nausea, vomiting, muscle pain (non-inoculated site), acute allergic reactions, cough.

All SAEs were collected within 6 months after the booster immunization.

• Study Type: Interventional
• Enrollment (Anticipated): 480
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• China
  • Zhejiang
    • Hangzhou, Zhejiang, China, 310051
      • Recruiting
      • Zhejiang Provincial Center for Disease Control and Prevention

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Healthy subjects over 18 years old, and can provide vaccination information to prove that they have completed 2 doses of inactivated novel coronavirus vaccine (BBIBP-CorV) within the past 3-9 months;
• The subjects voluntarily participate in the research, sign the informed consent form, and can provide valid identification, understand and comply with the requirements of the study protocol;
• Female subjects of childbearing age agree to use effective contraception from the start of the study to 2 months after vaccination.

Exclusion Criteria:

• Suspected or confirmed fever (fever ≥38.5℃) within 72 hours before enrollment, or axillary body temperature ≥37.3℃ on the day of enrollment;
• Diastolic blood pressure ≥ 100 mmHg and/or systolic blood pressure ≥ 160 mmHg without or after drug control;
• Have a history of previous infection with new coronary pneumonia or a positive nucleic acid test history;
• Those who currently suffer from the following diseases: 1.Thrombocytopenia, any coagulation disorder, or receiving anticoagulant therapy, etc.; 2.History of congenital or acquired immunodeficiency or autoimmune disease; asplenia, or history of spleen surgery, trauma, or treatment with immunomodulatory agents within 6 months, such as: immunosuppressive doses of glucocorticoids (dose reference: equivalent or prednisone 20mg/day for more than one week); or monoclonal antibody; or thymosin; or interferon, etc.; 3.Those suffering from acute infectious diseases or using antipyretic/analgesic/antiallergic drugs within 3 days before enrollment, or acute exacerbation of chronic diseases; 4.Cancer patients (except basal cell carcinoma) who have been off treatment for less than 6 months; 5.Serious chronic diseases such as congenital heart disease, severe liver and kidney disease, severe diabetes (with complications) that may interfere with the conduct or completion of the study; 6.Active tuberculosis, viral hepatitis patients with obvious liver damage (excluding virus carriers) and/or HIV-positive or syphilis-specific antibody-positive;
• Previous history of severe hypersensitivity to any vaccine, or severe hypersensitivity history to any component of the investigational vaccine, including aluminum preparations, such as: anaphylactic shock, allergic laryngeal edema, anaphylactoid purpura, thrombocytopenic purpura, dyspnea, vascular nerve edema, etc.;
• Administer subunit vaccine and inactivated vaccine within 14 days before the trial vaccine, and receive live attenuated vaccine within 28 days;
• Received blood or blood-related products, including immune globulin, within 3 months prior to screening; or planned use within 6 months after study initiation to full vaccination;
• In addition to completing 2 doses of inactivated novel coronavirus vaccine within the past 3-9 months, participating in other COVID-19 related clinical trials;
• Pregnant women (including women of childbearing age with positive urine pregnancy test);
• Investigators believe that the presence of any disease or condition in the subject may put the subject at unacceptable risk; the subject cannot meet protocol requirements; interfere with the assessment of vaccine response, etc.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: PREVENTION
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Investigational vaccine group; Recombinant novel coronavirus vaccine (CHO cells) injection, Intramuscular injection of deltoid muscle of upper arm of 25μg/0.5ml/person dose.	Biological: Recombinant novel coronavirus vaccine (CHO cells); At 3-9 months after the immunization with 2 doses of inactivated vaccine (BBIBP-CorV), 1 dose of recombinant novel coronavirus vaccine (CHO cells) is vaccinated.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Immunogenicity endpoint	Geometric mean titer (GMT) of SARS-CoV-2 neutralizing antibody	14 days after booster vaccination

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Immunogenicity endpoint	Geometric mean titer (GMT) of SARS-CoV-2 neutralizing antibody	30, 180 days after booster vaccination
Immunogenicity endpoint	4 times growth rate of SARS-CoV-2 neutralizing antibody	14 days, 30 days, and 180 days after booster vaccination
Safety endpoint	Incidence of AEs	Within 1 month after booster vaccination
Safety endpoint	Incidence of SAEs	Within 6 months after booster vaccination

Collaborators and Investigators

• Sponsor: Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.
• Collaborators: Zhejiang Provincial Center for Disease Control and Prevention

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 10, 2021
• Primary Completion (ANTICIPATED): March 1, 2022
• Study Completion (ANTICIPATED): July 1, 2022

Study Registration Dates

• First Submitted: January 11, 2022
• First Submitted That Met QC Criteria: January 11, 2022
• First Posted (ACTUAL): January 24, 2022

Study Record Updates

• Last Update Posted (ACTUAL): January 24, 2022
• Last Update Submitted That Met QC Criteria: January 11, 2022
• Last Verified: January 1, 2022

More Information

Terms related to this study

• Other Study ID Numbers: IIT-LKM-2021-NCV03-01

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No