Prevention of respiratory syncytial viral infection
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) Healthy Japanese subjects aged 60 to 80 years of age at the time of informed consent. 2) Subjects who complied with the compliance instructions in the study, underwent physical examination and examinations specified in the protocol, and were able to report symptoms, etc.
Exclusion criteria
Exclusion criteria: -Serious cardiovascular, respiratory, hepatic, renal, gastrointestinal, or neuropsychiatric disorders. -Serious acute illness. -Has been diagnosed with congenital or acquired immunodeficiency. -Previous vaccination with an RSV vaccine (including the investigational drugs) -Having a history of anaphylaxis or severe allergies due to medicines, or vaccination, etc. -Administration of gamma globulins, systemic immunosuppressants (including drugs for the treatment of autoimmune diseases), hematopoietics (excluding iron and vitamins), and corticosteroids (excluding topical preparations, inhalants, and small-dose short-term oral administration*) or planned administration of them in the period starting 28 days prior to informed consent and ending 28 days after the second vaccination. * <14 days, <=20 mg/day on a prednisolone basis. -Planned or actual administration of other vaccine in the period starting 14 days prior to informed consent and ending 14 days after the second vaccination., etc.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Geometric mean titer (GMT) and geometric mean fold rise (GMFR) of anti-RSV/A (RSV subgroup A) neutralizing activity on 28 days after the second administration of the study drug (Day 57) | — |
Secondary
| Measure | Time frame |
|---|---|
| Efficacy - GMT and GMFR of anti-RSV/A neutralizing activity on 28 days after the first administration of the Study Drug (Day 29) - GMT and GMFR of anti-RSV/B (RSV subgroup B) neutralizing activity on Day 29 and Day 57 - GMT and GMFR of anti-VAGA-9001a antibody on Day 29 and Day 57 - Summary statistics of VAGA-9001a-specific IFN-r production responses on Day 29 and Day 57 Safety - Solicited adverse events (injection site and systemic), Non-solicited adverse events, Serious adverse events, Laboratory test values, Potential immune-mediated disease (pIMD) | — |
Contacts
DAIICHI SANKYO Co.,Ltd.