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A Phase 2/3 Study of S-268019 (COVID-19)

An Open-Label Phase 2/3 Study of S-268019 (COVID-19)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031210383
Enrollment
3100
Registered
2021-10-20
Start date
2021-10-20
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

Interventions

S-268019 0.5 mL, intramuscular injection in the upper arm for a total of two doses. S-268019 0.5 mL is injected intramuscularly once to the participants who wish to receive the third vaccination.

Sponsors

Nagata Tsutae
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Participant must be >= 20 years of age inclusive, at the time of signing the informed consent. Male and female Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.

Exclusion criteria

Exclusion criteria: Positive SARS-CoV-2 antigen test result at Screening. Presence of cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrinological, hematological, or neurological disorders that, in the opinion of the investigator/subinvestigator, will lead to a safety issue or interfere with the assessment of efficacy Immunosuppressed state [immunocompromised, with acquired immunodeficiency syndrome (AIDS), receiving systemic steroid or immunosuppressive drugs within 6 months prior to the first dose of study intervention, being treated for malignancy or receiving other immunosuppressive therapy]. Hypersensitivity to any of the study drugs, or components thereof, or drug or other allergy that, in the opinion of the investigator/subinvestigator, contraindicates participation in the study (except pollinosis and atopic dermatitis). Participant has a contraindication to IM injections or blood draws. et, al.

Design outcomes

Primary

MeasureTime frame
The incidence of adverse events/adverse reactions/serious adverse events/solicited adverse events/medically attended adverse events/adverse event of special interest. SARS-CoV-2 neutralizing antibody titer on Day 239

Contacts

Public ContactCorporate Communications Department -

Shionogi & Co., Ltd.

shionogiclintrials-admin@shionogi.co.jp+81-6-6209-7885

Outcome results

None listed

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