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A Phase 3, open-label, randomized, controlled study to evaluate the immune response, safety and reactogenicity of RSVPreF3 OA investigational vaccine when co-administered with a COVID-19 mRNA vaccine (Omicron XBB.1.5) in adults aged 50 years and above.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-510196-59-00
Acronym
217848
Enrollment
600
Registered
2024-06-03
Start date
2024-06-15
Completion date
2025-04-18
Last updated
2025-04-08

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

Conditions

Respiratory Syncytial Virus Infections

Brief summary

• RSV-A neutralization titers expressed as group GMT ratio 1 month after the RSVPreF3 OA investigational vaccine dose. • RSV-B neutralization titers expressed as group GMT ratio 1 month after the RSVPreF3 OA investigational vaccine dose., • SARS-CoV-2 Omicron XBB.1.5 neutralization titers against pseudovirus bearing S protein expressed as group GMT ratio 1 month after the COVID-19 mRNA vaccine.

Detailed description

• RSV-A and RSV-B neutralization titers expressed as GMT, MGI and SRR at 1 month after the RSVPreF3 OA investigational vaccine dose. • Percentage of participants having RSV-A and RSV-B neutralizing titers ≥ assay cut-off (i.e., LLOQ) at pre-vaccination and 1 month after the RSVPreF3 OA investigational vaccine dose., "• SARS-CoV-2 Omicron XBB.1.5 neutralization titers against pseudovirus bearing S protein expressed as GMT and MGI at 1 month after the COVID-19 mRNA vaccine. • Percentage of participants having SARS-CoV-2 Omicron XBB.1.5 neutralization titers ≥ assay cut-off (i.e., LLOQ) at pre-vaccination and 1 month after the COVID-19 mRNA vaccine dose.", "• Percentage of participants reporting each solicited administration site event and systemic event within 4 days post study intervention administration (i.e., the day of vaccination and 3 subsequent days). • Percentage of participants reporting unsolicited AEs within 30 days post study intervention administration (i.e., the day of vaccination and 29 subsequent days).", "• Percentage of participants reporting SAEs after study intervention administration (Day 1) up to study end (6 months after last study intervention administration). • Percentage of participants reporting pIMDs after study intervention administration (Day 1) up to study end (6 months after last study intervention administration). "

Interventions

Sponsors

GlaxoSmithKline Biologicals
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
• RSV-A neutralization titers expressed as group GMT ratio 1 month after the RSVPreF3 OA investigational vaccine dose. • RSV-B neutralization titers expressed as group GMT ratio 1 month after the RSVPreF3 OA investigational vaccine dose., • SARS-CoV-2 Omicron XBB.1.5 neutralization titers against pseudovirus bearing S protein expressed as group GMT ratio 1 month after the COVID-19 mRNA vaccine.

Secondary

MeasureTime frame
• RSV-A and RSV-B neutralization titers expressed as GMT, MGI and SRR at 1 month after the RSVPreF3 OA investigational vaccine dose. • Percentage of participants having RSV-A and RSV-B neutralizing titers ≥ assay cut-off (i.e., LLOQ) at pre-vaccination and 1 month after the RSVPreF3 OA investigational vaccine dose., "• SARS-CoV-2 Omicron XBB.1.5 neutralization titers against pseudovirus bearing S protein expressed as GMT and MGI at 1 month after the COVID-19 mRNA vaccine. • Percentage of participants having SARS-CoV-2 Omicron XBB.1.5 neutralization titers ≥ assay cut-off (i.e., LLOQ) at pre-vaccination and 1 month after the COVID-19 mRNA vaccine dose.", "• Percentage of participants reporting each solicited administration site event and systemic event within 4 days post study intervention administration (i.e., the day of vaccination and 3 subsequent days). • Percentage of participants reporting unsolicited AEs within 30 days post study intervention administration (i.e., the day of va

Countries

Belgium, Netherlands, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026