Phase 3
N=918
Immunogenicity and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Toddlers
Meningitis · Meningococcal Meningitis · Meningococcal Infections
Bottom Line
View on ClinicalTrials.gov: NCT02955797 ↗Enrolled (actual)
918
Serious AEs
0.8%
Results posted
Jun 2020
Primary outcome: Primary: Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W in Toddlers Who Either Were Meningococcal Vaccine Naïve or Had Received Monovalent MenC Vaccination During Infancy — 90.4; 91.6; 99.2; 85.5 percentage of participants
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 3
- Interventions
- Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine (Biological); Meningococcal polysaccharide groups A, C, W-135 and Y Conjugate vaccine (Biological)
- Age
- Pediatric · 0+ yrs
- Sex
- All
- Sponsor
- Sanofi Pasteur, a Sanofi Company
- Primary completion
- Oct 2017
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W in Toddlers Who Either Were Meningococcal Vaccine Naïve or Had Received Monovalent MenC Vaccination During Infancy |
90.4; 91.6; 99.2; 85.5; 94.3; 91.6 | — |
| PRIMARY Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® in Meningococcal Vaccine Naïve Toddlers |
90.8; 89.5; 99.3; 81.4; 93.2; 91.6 | — |
| SECONDARY Geometric Mean Titers (GMTs) of Antibodies Against Meningococcal Serogroups A, C, Y, and W in Toddlers Who Either Were Meningococcal Vaccine Naïve or Had Received Monovalent MenC Vaccination During Infancy |
29.9; 34.5; 880; 77.1; 41.7; 31.9 | — |
| SECONDARY Geometric Mean Titers of Antibodies Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® in Vaccine Naive Toddlers |
28.7; 28.0; 436; 26.4; 38.0; 32.2 | — |
| SECONDARY Geometric Mean Titers of Antibodies Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® in Toddlers Who Had Received Monovalent MenC Vaccination During Infancy |
31.8; 64.0; 2514; 1883; 48.0; 31.3 | — |
Summary
The purpose of the study was to evaluate the immunogenicity and describe the safety of a single dose of Meningococcal Polysaccharide (Serogroups A, C, Y and W) Tetanus Toxoid (MenACYW) Conjugate vaccine compared to the licensed Meningococcal polysaccharide groups A, C, W-135 and Y (Nimenrix®) Conjugate vaccine in toddlers 12 to 23 months of age in the European Union (EU). The toddlers were either meningococcal vaccine naïve or had received monovalent meningococcal C (MenC) vaccination during infancy to evaluate any potential impact of the meningococcal vaccine background on the immunogenicity and safety profile of the investigational product.
Primary Objectives:
* To demonstrate the non-inferiority of the antibody response to meningococcal serogroups A, C, Y, and W after a single dose of MenACYW Conjugate vaccine or Nimenrix® in toddlers who either were meningococcal vaccine naïve or had received monovalent MenC vaccination during infancy.
* To demonstrate the non-inferiority of the antibody response to meningococcal serogroups A, C, Y, and W after a single dose of MenACYW Conjugate vaccine or Nimenrix® in meningococcal vaccine naïve toddlers.
Secondary Objectives:
* To compare the antibody responses (geometric mean titers [GMTs]) to meningococcal serogroups A, C, Y, and W after a dose of MenACYW Conjugate vaccine or Nimenrix® as measured by serum bactericidal assay using human complement (hSBA) in toddlers who either were meningococcal vaccine naïve or had received monovalent MenC vaccination during infancy.
* To compare the antibody responses (GMTs) to meningococcal serogroups A, C, Y, and W after a dose of MenACYW Conjugate vaccine or Nimenrix® as measured by hSBA in meningococcal vaccine naïve toddlers.
* To compare the antibody responses (GMTs) to meningococcal serogroups A, C, Y, and W after a dose of MenACYW Conjugate vaccine or Nimenrix® as measured by hSBA in toddlers who received monovalent MenC vaccination during infancy.
Eligibility Criteria
Inclusion Criteria
- Aged 12 to 23 months on the day of the first study visit.
- Participants had received all recommended standard-of-care non-meningococcal vaccinations according to his/her age as per local regulations.
- Informed consent form (ICF) had been signed and dated by the parent/legally acceptable representative.
- Participant and parent/legally acceptable representative were able to attend all scheduled visits and complied with all trial procedures.
- Covered by health insurance if required by local regulations.
- Participants had received any meningococcal vaccine in the second year of life (i.e., from 12 months of age).
- For Inclusion in Groups 1 and 2: Participants must not had received any vaccination against meningococcal disease with either a trial vaccine or a licensed meningococcal vaccine (i.e., polyvalent, polysaccharide, or Conjugate meningococcal vaccine containing serogroups A, C, W, Y, B; or any monovalent or bivalent meningococcal vaccine).
- For Inclusion in Groups 3 and 4: Participants must had previously received at least 1 dose of licensed monovalent meningococcal C Conjugate (MenC) vaccine during infancy (i.e., before 12 months of age).
Exclusion Criteria
- Participation in the 4 weeks preceding the trial vaccination or planned participation during the present trial period in another clinical trial investigating a vaccine, drug, medical device, or medical procedure.
- Receipt of any vaccine in the 4 weeks (28 days) preceding the trial vaccination or planned receipt of any vaccine prior to Visit 2 except for influenza vaccination, which may be received at least 2 weeks before or after study investigational vaccines. This exception included monovalent pandemic influenza vaccines and multivalent influenza vaccines.
- Receipt of immune globulins, blood or blood-derived products in the past 3 months.
- For Groups 1 and 2 only: Vaccination against meningococcal disease with either a trial vaccine or a licensed meningococcal vaccine (i.e., polyvalent, polysaccharide, or Conjugate meningococcal vaccine containing serogroups A, C, W, Y, B; or any monovalent or bivalent meningococcal vaccine).
- For Groups 3 and 4 only: Vaccination against meningococcal disease with either a trial vaccine or a licensed meningococcal vaccine (i.e., polyvalent, polysaccharide, or Conjugate meningococcal vaccine containing serogroups A, C, W, Y, B; or any monovalent B meningococcal vaccine), except licensed monovalent meningococcal C Conjugate (MenC) vaccination received during infancy.
- Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months).
- History of meningococcal infection, confirmed either clinically, serologically, or microbiologically.
- At high risk for meningococcal infection during the trial (specifically, but not limited to, participants with persistent complement deficiency, with anatomic or functional asplenia, or participants travelling to countries with high endemic or epidemic disease).
- Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccines used in the trial or to a vaccine containing any of the same substances.
- Personal history of an Arthus-like reaction after vaccination with a tetanus toxoid-containing vaccine.
- Personal history of Guillain-Barré Syndrome.
- Verbal report of thrombocytopenia, as reported by the parent/legally acceptable representative contraindicating intramuscular vaccination in the Investigator's opinion.
- Bleeding disorder or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating intramuscular vaccination in the Investigator's opinion.
- Chronic illness that, in the opinion of the Investigator, is at a stage where it migh
Data sourced from ClinicalTrials.gov (NCT02955797). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.