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Intranasal booster of IRO-203 to people had new corona virus vaccines, phase 1 study.

A randomized, dose escalating, double-blind, placebo-controlled to investigate the safety, tolerability, and efficacy of IRO-203 booster intranasal vaccination in healthy volunteers who have been COVID-19 vaccinated, phase 1 study

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031230116
Enrollment
84
Registered
2023-06-07
Start date
2023-06-07
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 SARS-CoV-2 infection

Interventions

IRO-203, high dose, medium dose, low dose, or placebo will be nebulized into each nostril at 0.25 mL for a total of 0.5 mL using a intranasal spray device.

Sponsors

Tsubaki Atsushi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: -Subjects aged over 18 at the time of obtaining informed consent. -Subjects who can comply with the requirements and restrictions described in this protocol, visit the hospital at the prescribed time, and undergo necessary tests, etc. -Subjects who have received two or more other new coronavirus vaccines in the past, and three months or more have passed since the most recent vaccination. -Subjects who agree not to donate blood during the clinical study period. -If the female subject or the male subject's partner is possibility pregnancy, who can consent to use medically effective contraception during the clinical study.

Exclusion criteria

Exclusion criteria: -Subjects who have SARS-CoV-2 PCR test positive for SARS-CoV-2. -Subjects who have been infected with SARS-CoV-2 in the past or suspected of being infected. -Subjects with symptoms suspected of being infected with SARS-CoV-2. -Subjects suffering from severe acute diseases. -Current history of cardiovascular, including thrombosis, respiratory, hepatic, renal, gastrointestinal, endocrine, hematologic, or neurological disease, and the investigator decides the subject has a safety issue. -Subjects with a history of convulsions due to vaccination or epilepsy. -Subjects with current or past history of myocarditis or pericarditis. -Subjects who have thrombocytopenia, coagulopathy, and those undergoing anticoagulant therapy. -Subjects who have a fever of 37.5 degrees Celsius or higher on the day of administration of the investigational product. -Subjects who have received immunosuppressive treatment within 6 months before vaccination with this investigational product. -Subjects who have received other investigational products within 3 months before vaccination with this investigational product. -Female subjects who are pregnant, wish to become pregnant during the clinical study, or have indicated that they are breast-feeding, or have a positive pregnancy test at the time of screening. -Subjects who have drug allergies, including allergies to vaccines, or other allergies that are considered inappropriate for study participation in the opinion of the investigators. -Subjects who are positive for HIV, HBV, HCV antibody or syphilis test. -Subjects who have olfactory abnormalities as a result of the olfactory test performed before vaccination with the study drug and an examination by an otolaryngologist. etc.

Design outcomes

Primary

MeasureTime frame
Safety; adverse events, specific adverse events, laboratory tests, vital signs, 12-lead ECG

Secondary

MeasureTime frame
Efficacy; serum IgG antibody titer, serum neutralizing antibody titer

Contacts

Public ContactAya Azuma

ID Pharma Co.,Ltd.

azuma-aya@iromgp.com+81-3-3264-3131

Outcome results

None listed

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