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A Phase 3, Randomized, Double-Blind, Active-Controlled, Confirmatory Study to Compare the Immunogenicity, Efficacy, and Safety of KD-414 Vaccine and Vaxzevria Vaccine in Adults Aged 18 to 40 Years Old (COVID-19)

A Phase 3, Randomized, Double-Blind, Active-Controlled, Confirmatory Study to Compare the Immunogenicity, Efficacy, and Safety of KD-414 Vaccine and Vaxzevria Vaccine in Adults Aged 18 to 40 Years Old (COVID-19) - kd414-03

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031210679
Enrollment
1500
Registered
2022-03-18
Start date
2022-04-30
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prevention of COVID-19 infection

Interventions

KD-414 is an inactivated whole-particle vaccine containing purified inactivated SARS CoV 2 cultured in Vero cells derived from African green monkey kidney cells, with aluminum hydroxide as adjuvant. E

Sponsors

Fushimi Hideki
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Is capable of understanding the written informed consent, provides signed informed consent, and agrees to comply with protocol requirements. 2. Is aged 18 to 40 years old. 3. Is healthy or medically stable as determined by investigator judgment based on medical history, physical examination, and vital signs. Medically stable condition is defined as any chronic medical disease or condition that has not required a change in medication or surgical intervention or resulted in hospitalization or medically attended events within 6 months prior to screening.

Exclusion criteria

Exclusion criteria: 1. Has a current diagnosis or a history of laboratory confirmed SARS-CoV-2. 2. Has close contacts with person(s) with COVID-19 within 14 days of the first dose of study vaccine (based on the interview with subject). 3. Has been infected with HIV.. 4. Has received any prior vaccines against COVID-19. 5. Has experienced documented anaphylaxis caused by an ingredient of study vaccine.

Design outcomes

Primary

MeasureTime frame
Geometric mean titer of serum neutralizing antibody against SARS-CoV-2 at 28 days after the third dose of KD-414 (Day 148) as compared with that at 28 days after the second dose of Vaxzevria (Day 57).

Countries

Japan, Philippines

Contacts

Public ContactClinical Development Dept.

Meiji Seika Pharma Co., Ltd.

clinical-trials@meiji.com+81-3-3273-3745

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026