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C1091009 - A PHASE 3, RANDOMIZED, PLACEBO-CONTROLLED, DOUBLE-BLINDED TRIAL TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF A MULTIVALENT GROUP B STREPTOCOCCUS VACCINE IN HEALTHY PREGNANT WOMEN AND THEIR INFANTS

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-503070-36-00
Acronym
C1091009
Enrollment
764
Registered
2025-11-18
Start date
2025-12-23
Completion date
Unknown
Last updated
2025-11-26

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

Conditions

Group B streptococcus (GBS) disease

Brief summary

Prespecified local reactions (redness, swelling, and pain at the injection site)., Prespecified systemic events (fever, nausea, vomiting, diarrhea, headache, fatigue, muscle pain, and joint pain)., Adverse events (AEs)., Serious adverse events (SAEs)., Medically attended adverse events (MAAEs)., GBS serotype specific anti-CPS IgG antibody concentrations measured at birth in infant participants

Detailed description

GBS serotype-specific anti-CPS IgG antibody concentrations in infant participants, GBS serotype-specific OPA antibody titers in infant participants, GBS serotype-specific anti-CPS IgG antibody concentrations measured at birth in infant participants, GBS serotype-specific anti-CPS IgG antibody concentrations in maternal participants, Serum IgG concentration to diphtheria toxoid in a subset of infant participants. Serum IgG concentration to PCV serotypes in a subset of infant participants

Interventions

DRUGPlacebo to Group B Streptococcus 6-Valent Polysaccharide Conjugate Vaccine (GBS6)
DRUGGroup B Streptococcus 6-Valent Polysaccharide Conjugate Vaccine (GBS6)

Sponsors

Pfizer Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
0 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Prespecified local reactions (redness, swelling, and pain at the injection site)., Prespecified systemic events (fever, nausea, vomiting, diarrhea, headache, fatigue, muscle pain, and joint pain)., Adverse events (AEs)., Serious adverse events (SAEs)., Medically attended adverse events (MAAEs)., GBS serotype specific anti-CPS IgG antibody concentrations measured at birth in infant participants

Secondary

MeasureTime frame
GBS serotype-specific anti-CPS IgG antibody concentrations in infant participants, GBS serotype-specific OPA antibody titers in infant participants, GBS serotype-specific anti-CPS IgG antibody concentrations measured at birth in infant participants, GBS serotype-specific anti-CPS IgG antibody concentrations in maternal participants, Serum IgG concentration to diphtheria toxoid in a subset of infant participants. Serum IgG concentration to PCV serotypes in a subset of infant participants

Countries

Finland, Netherlands, Spain

Outcome results

None listed

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