NCT06025812

Clinical Study of Omicron BA.4/5-Delta Strain Recombinant Novel Coronavirus Protein Vaccine (CHO Cells)

A Randomized, Double-blind, Active-controlled Clinical Study Evaluating the Immunogenicity and Safety of Omicron BA.4/5-Delta Recombinant Novel Coronavirus Protein Vaccine (CHO Cells) in People Aged 18 Years and Older With Different Immunization Programs

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 160 (estimated)
• Sponsor: Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd. · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Popular title: Clinical study of Omicron BA.4/5-Delta strain recombinant novel coronavirus protein vaccine (CHO cells). Purpose of the study: Main objectives: To evaluate the immunogenicity and safety of Omicron BA.4/5-Delta strain recombinant novel coronavirus protein vaccine (CHO cells) against the new coronavirus prototype strain and Omicron variant (XBB, BA.5, BF.7) after receiving 2 doses according to different immunization schedules in people aged 18 years and older. Secondary purposes: To evaluate the immune persistence of Omicron BA.4/5-Delta recombinant novel coronavirus protein vaccine (CHO cells) against the new coronavirus prototype strain and Omicron variant (XBB, BA.5, BF.7) after receiving 2 doses according to different immunization schedules in people aged 18 years and older. Overall design: Studies were randomized, double-blind, active-controlled study design. Study group: There were 160 participants aged 18 years and older, including 80 people aged 60 years and older. Study group：Among them, 80 subjects were from the "randomized, double-blind, active-controlled clinical study to evaluate the immunogenicity and safety of Omicron BA.4/5-Delta strain recombinant novel coronavirus protein vaccine (CHO cells) in people aged 18 years and older, protocol number: LKM-2023-NCV-02", 40 cases in the study group and 40 cases in the control group, and completed the second dose of vaccine at the 6th month visit to observe immunogenicity and safety. The remaining 80 subjects were randomly blinded to the 1:1 ratio into the research group and the control group and received 2 doses of the experimental vaccine according to the 0-1-month procedure to observe immunogenicity and safety.

Conditions

• Coronavirus

Interventions

Type	Name	Description
BIOLOGICAL	Omicron BA.4/5-Delta strain recombinant novel coronavirus protein vaccine (CHO cells)	Intramuscular injection of deltoid muscle of upper arm of 25μg/0.5ml/person dose Omicron BA.4/5-Delta strain recombinant novel coronavirus protein vaccine (CHO cells).
BIOLOGICAL	Recombinant novel coronavirus protein vaccine (CHO cells)	Intramuscular injection of deltoid muscle of upper arm of 25μg/0.5ml/person dose Recombinant new coronavirus vaccine (CHO cells).

Timeline

• Start date: 2023-09-20
• Primary completion: 2024-05-15
• Completion: 2024-06-30
• First posted: 2023-09-06
• Last updated: 2023-09-06