A Phase II, Placebo-controlled, Randomized, Observer-blind Study to Evaluate the Immunogenicity, Safety, and Tolerability of UB-612 Vaccine Against COVID-19 in Adolescent, Younger and Elderly Adult Volunteers
Overview
- Phase
- Phase 2
- Intervention
- Not specified
- Conditions
- COVID-19
- Sponsor
- United Biomedical Inc., Asia
- Enrollment
- 3877
- Locations
- 12
- Primary Endpoint
- Geometric mean titer (GMT) of SARS-CoV-2 neutralizaing antibody
- Status
- Terminated
- Last Updated
- 3 years ago
Overview
Brief Summary
This is a phase II, observer-blind, multiple-centre, randomized, placebo-controlled study to evaluate the immunogenicity, safety, tolerability and lot consistency of 2 doses of UB-612 vaccine in adolescent, younger and elderly adults. Around 3850 adult subjects will be randomized to be composed of the core group, while around 385 adolescents will be randomized to be the supplementary group. Subjects will be unblinded at Visit 5, and subjects in the vaccine group will be encouraged to have 3rd dose of vaccination.
Detailed Description
This clinical study will be consisted of 7 clinical visits and one long-term follow-up visit. Subjects will also be unblinded at Visit 5, subjects in placebo group will withdraw from the study and subjects in vaccine group will be encouraged to have 3rd dose of vaccination (Day 197\~Day 242) at Visit 6. Those who received 3rd dose will have Visit 7 (14 days after Visit 6) to check the booster effect. After Day 197, subjects will enter the long-term follow-up with a safety call bi-monthly.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Healthy male or non-pregnant female between the age of 12 to 85 years at time of enrolment.
- •Women of childbearing potential and men must agree to practice medically effective contraception from first vaccination until 3 months after the last vaccination.
- •Able to understand the content and possible risks of informed consent and willing to sign the Informed Consent Form (ICF).
- •Able to understand and agrees to comply with all study procedures and be available for all study visits.
- •Ear temperature ≤ 38.0°C.
- •Healthy participants who are determined by medical history, physical examination, and clinical judgment of the investigator to be eligible for inclusion in the study. In the investigator's clinical judgement, participant may have a stable and well-controlled comorbidity associated with an increased risk of progression to severe COVID-19.
Exclusion Criteria
- •History of anaphylaxis, urticarial, or other significant adverse reaction requiring medical intervention after receipt of a vaccine.
- •Female who is pregnant or positive in pregnancy test at screening or just prior to each vaccination administration.
- •Female who is breast-feeding or plans to breastfeed from the time of the first vaccination through 60 days after the last vaccination.
- •Any acute illness, as determined by the study investigator 3 days before first vaccination (these subjects can be re-scheduled).
- •Any major surgery one month before first vaccination (these subjects can be -rescheduled).
- •Known HIV antibody positive.
- •Known active hepatitis B and hepatitis C disease.
- •Previous exposure to SARS-CoV-2 or receipt of an investigational or licensed product for the prevention of COVID-19, MERS or SARS.
- •Have history of Guillain-Barre syndrome.
- •Subjects who take part in another clinical study within 12 weeks prior to the day of informed consent.
Outcomes
Primary Outcomes
Geometric mean titer (GMT) of SARS-CoV-2 neutralizaing antibody
Time Frame: Day 57
Immunogenicity evaluation
Seroconversion rate (SCR) of SARS-CoV-2 neutralizing antibody
Time Frame: Day 57
Immunogenicity evaluation
Local reactions and systemic events
Time Frame: Up to 7 days following each dose
Safety evaluation
Unsolicited adverse events
Time Frame: Day 1 to Day 57
Safety evaluation
Medically attend adverse events (MAAEs), serious adverse events (SAEs), adverse event of special interests (AESIs) and antibody dependent enhancements (ADEs)
Time Frame: Day 1 to Day 365
Safety evaluation
Secondary Outcomes
- SCR of anti-S1-RBD antibody(Day 57)
- GMT of SARS-CoV-2 neutralizing antibody(Day 197 and 365)
- GMT of anti-S1-RBD antibody(Day 57, 197 and 365)
- Geometric mean fold increase in SARS-CoV-2 neutralizing antibody and antigen-specific antibody (Anti-S1-RBD)(Day 57, 197 and 365)
- Lot consistency by comparisons of GMT of SARS-CoV-2 neutralizing antibody(Day 57)