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Study of a Novel Vaccine against Meningococcal Meningitis Compared with Locally Licensed Meningococcal Vaccines

Phase I Open-Label, Age De-escalation Safety and Immunogenicity Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Healthy Adolescents, Children, Toddlers, and Infants in China

Status
Unknown
Phases
Phase 1
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2025-000103-23-Outside-EU/EEA
Enrollment
Unknown
Registered
2025-04-09
Start date
Unknown
Completion date
Unknown
Last updated
2025-04-14

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

Conditions

Meningococcal infection MedDRA version: 20.0 Level: PT Classification code 10027274 Term: Meningococcal infection System Organ Class: 10021881 - Infections and infestations

Interventions

Trade Name: MenQuadfi® Product Name: MenACYW conjugate vaccine Pharmaceutical Form: Solution for injection INN or Proposed INN: Neisseria Meningitidis Serogroup C Polysaccharide Conjugated to Tetanus

Sponsors

Sanofi Pasteur Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: For participants 3 through 23 months of age: Born at full term of pregnancy (=37 weeks) or born after a gestation period of 27 through 36 weeks and medically stable as assessed by the Investigator For participants 12 through 17 years of age: A female participant is eligible to participate if she is not pregnant or breastfeeding Are the trial subjects under 18? yes Number of subjects for this age range: 450 F.1.2 Adults (18-64 years) no F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Participants are excluded from the study if any of the following criteria apply: - History of meningococcal infection - History of Guillain-Barré syndrome - At high risk for meningococcal infection during the trial

Design outcomes

Primary

MeasureTime frame
Main Objective: To describe the safety profile of MenACYW conjugate vaccine and the safety profiles of the control vaccines (ie, locally-licensed MenAC conjugate vaccines: Royal or Green Bamboo);Secondary Objective: •To describe the antibody (AB) responses against meningococcal serogroups A,C,Y and W for MenACYW conjugate vaccine and against serogroups A and C for Green Bamboo's MenAC conjugate vaccine following the administration of a single dose of the corresponding vaccine in children and adolescents 7-17 years of age (Cohort I [Groups 1 and 2]) •To describe the AB responses against meningococcal serogroups A,C,Y and W for MenACYW conjugate vaccine and against serogroups A and C for Royal’s MenAC conjugate vaccine following the administration of a single dose of the corresponding vaccine in children 2-6 years of age (Cohort II [Groups 3 and 4]) •To describe the AB responses against meningococcal serogroups A,C,Y, and W for MenACYW conjugate vaccine and against serogroups A and C for Royal’s MenAC conjugate vaccine following the administration of a single dose of the corresponding vaccine in toddlers 12-23 months of age (Cohort III [Groups 5 and 6]) [See translation section for continuation];Primary end point(s): 1. Presence of any unsolicited systemic adverse events (AEs) reported in the 30 minutes after each and any study vaccination 2. Presence of solicited injection site reactions (pre listed in the participant’s diary card [DC] and case report form [CRF]) up to 7 days after each and any study vaccination 3. Presence of solicited systemic reactions (pre-listed in the participant’s DC and CRF) up to 7 days after each and any study vaccination 4. Presence of unsolicited AEs up to 30 days after each and any study vaccination 5. Presence of SAEs, throughout the trial, ie, from Visit 1 (first vaccination) to 6 months after the last study vaccination;Timepoint(s) of evaluation of this end point: 1. D1 (all participants), D31 (participants of 3 through 11 months of a

Secondary

MeasureTime frame
Secondary end point(s): 1. Cohort I [Groups 1 and 2]: Vaccine seroresponse of meningococcal serogroups A, C, Y, and W for MenACYW conjugate vaccine or of serogroups A and C for Green Bamboo’s MenAC conjugate vaccine measured using serum bactericidal assay using rabbit complement (rSBA) in serum specimens collected on D01 (pre-vaccination) and D31 (30 days [+7 days] after vaccination with the corresponding study vaccine) 2. Cohort II [Groups 3 and 4]: Vaccine seroresponse of meningococcal serogroups A, C, Y, and W for MenACYW conjugate vaccine or of serogroups A and C for Royal’s MenAC conjugate vaccine measured using rSBA in serum specimens collected on D01 (pre-vaccination) and D31 (30 days [+7 days] after vaccination with the corresponding study vaccine) 3. Cohort III [Groups 5 and 6]: Vaccine seroresponse of meningococcal serogroups A, C, Y, and W for MenACYW conjugate vaccine or of serogroups A and C for Royal’s MenAC conjugate vaccine measured using rSBA in serum specimens collected on D01 (pre-vaccination) and D31 (30 days [+7 days] after vaccination with the corresponding study vaccine) 4. Cohort IV [Groups 7 and 8]: Vaccine seroresponse of meningococcal serogroups A, C, Y, and W for MenACYW conjugate vaccine or of serogroups A and C for Royal’s MenAC conjugate vaccine measured using rSBA in serum specimens collected on D01 (pre-vaccination) and D61 (30 days [+7 days]) after the second vaccination with the corresponding study vaccine) 5. Cohort V [Groups 9 and 10]: Vaccine seroresponse of meningococcal serogroups A, C, Y, and W for MenACYW conjugate vaccine or of serogroups A and C for Green Bamboo’s MenAC conjugate vaccine measured using rSBA in serum specimens collected on D01 (pre-vaccination) and D91 (30 days [+7 days] after the third vaccination with the corresponding study vaccine) 6. Antibody titers in terms of Geometric mean titers (GMT) against meningococcal serogroups A, C, Y, and W measured by rSBA 30 days after one dose of MenACYW conjugate vaccin

Countries

China

Contacts

Public ContactGlobal Regulatory Affairs

Sanofi Pasteur Inc.

sma-cta-coordination@sanofi.com+33169745769

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026