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A phase III, randomized, active-comparator, observer-blind, non-inferiority study to demonstrate the immunogenicity and safety of DS-5670d(monovalent: omicron XBB.1.5) in adults and children aged 12 years and older

A phase III, randomized, active-comparator, observer-blind, non-inferiority study to demonstrate the immunogenicity and safety of DS-5670d (monovalent: omicron XBB.1.5) in adults and children aged 12 years and older

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031230424
Enrollment
779
Registered
2023-10-24
Start date
2024-01-09
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 infection due to SARS-CoV-2

Interventions

A dose of either DS-5670d (0.6 mL) or Comirnaty RTU IM (0.3 mL) will be intramuscularly administered to the deltoid muscle of the upper arm.

Sponsors

Inoguchi Akihiro
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Subjects aged 12 years and older at the time of informed consent. 2) Having provided written consent to study participation. 3) Able to comply with the rules of the study, record symptoms via electronic diary by himself/herself or his/her legal representative, undergo physical examinations and tests that are specified in the protocol, and report symptoms or other issues (report from his/her legal representative to be available).

Exclusion criteria

Exclusion criteria: 1) Having any serious cardiovascular, renal, hepatic, blood, neuropsychiatric, developmental disorder, thrombocytopenia, or coagulopathy. 2) Having a medical history of vaccination-related convulsions or epilepsy. 3) Having a concurrent or medical history of myocarditis or pericarditis. 4) Having tested positive within 3 months before informed consent for SARS-CoV-2 infection (based on RT-PCR, other nucleic acid detection methods, or SARS-CoV-2 antigen test), or having been diagnosed with COVID-19 based on a physician's examination. 5) Having been diagnosed with immunodeficiency in the past or having a close relative with congenital immunodeficiency. 6) Having symptoms suspected of SARS-CoV-2 infection (eg, respiratory symptoms, headache, malaise, anosmia, dysgeusia, pharyngeal pain) at the time of informed consent. 7) Having tested positive for SARS-CoV-2 antigen test at the time of eligibility evaluation. 8) Having tested positive for SARS-CoV-2 antibody test at the time of eligibility evaluation, with symptoms suspected ofSARS-CoV-2 infection (eg, respiratory symptoms, headache, malaise, anosmia, dysgeusia, pharyngeal pain) within 3 months before informed consent.

Design outcomes

Primary

MeasureTime frame
- The GMT of blood neutralising activity against SARS-CoV-2 (Omicron XBB.1.5) at 4 weeks after the administration in adults and children aged 12 years and older with at least one of SARS-CoV-2 infection history and SARS-CoV-2 vaccination history. - The seroresponse rate of blood neutralising activity against SARS-CoV-2 (Omicron XBB.1.5) at 4 weeks after the administration in adults and children aged 12 years and older with at least one of SARS-CoV-2 infection history and SARS-CoV-2 vaccination history.

Secondary

MeasureTime frame
- The GMT of blood neutralising activity against SARS-CoV-2 (Omicron XBB.1.5) at 4 weeks after the administration in adults and children aged 12 years and older regardless of SARS-CoV-2 infection history and SARS-CoV-2 vaccination history. - The seroresponse rate of blood neutralising activity against SARS-CoV-2 (Omicron XBB.1.5) at 4 weeks after the administration in adults and children aged 12 years and older regardless of SARS-CoV-2 infection history and SARS-CoV-2 vaccination history.

Contacts

Public ContactContact for Clinical Trial Information

Daiichi Sankyo Co., Ltd.

dsclinicaltrial_jp@daiichisankyo.com+81-3-6225-1111

Outcome results

None listed

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