Study of a Quadrivalent Meningococcal Conjugate Vaccine as a Single Dose Compared With a Single Dose of a Meningococcal Reference Vaccine in Children, Adolescents, and Adults 2 to 55 Years of Age

Study Overview
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Brief Summary
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Primary Objective: To demonstrate the non-inferiority of the antibody responses to meningococcal serogroups A, C, Y, and W following the administration of a single dose of Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine (MenACYW Conjugate vaccine) compared with those observed following the administration of a single dose of Meningococcal (Groups A, C, Y and W-135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine (Menactra® vaccine). Secondary Objective: Immunogenicity: To describe the antibody responses to the meningococcal serogroups A, C, Y, and W before and 30 days (+14 days) after vaccination with MenACYW Conjugate vaccine or Menactra®. Safety: To describe the safety profile of MenACYW Conjugate vaccine and that of Menactra®.

Detailed Description
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The duration of each participant's participation in the study was approximately 30 to 44 days.

Official Title
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Immunogenicity and Safety of a Single Dose of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Children, Adolescents, and Adults 2 to 55 Years of Age

Conditions
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Meningococcal Immunisation (Healthy Volunteers)

Intervention / Treatment
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* Biological: Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine (MenACYW Conjugate Vaccine)
* Biological: Meningococcal (Groups A, C, Y and W 135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine


Participation Criteria
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Eligibility Criteria
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Inclusion criteria : Aged 2 to 55 years on the day of inclusion. Informed consent form had been signed and dated by the participants or participants' parents/legally acceptable representatives as applicable. In addition: Participants 7 to 19 years provided written assent. Participants (and participants' parents/legally acceptable representatives for the 2 to 19 years age groups) were able to attend all scheduled visits and complied with all study procedures. Exclusion criteria: Participant was pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be pre-menarche or post-menopausal for at least 1 year, surgically sterile, or using an effective method of contraception* or abstinence from at least 4 weeks prior to vaccination until at least 4 weeks after vaccination). *Effective methods of contraception included oral contraception (pill), intrauterine device, or condoms used with spermicide. Participation in the 4 weeks preceding the study vaccination or planned participation during the present study period in another clinical study investigating a vaccine, drug, medical device, or medical procedure. Receipt of any vaccine in the 4 weeks preceding the study 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 the study investigational vaccines. This exception includes monovalent pandemic influenza vaccines and multivalent influenza vaccines. Previous vaccination against meningococcal disease with either the study vaccine or another vaccine (i.e., mono- or polyvalent, polysaccharide, or Conjugate meningococcal vaccine containing serogroups A, C, Y, or W; or meningococcal B vaccine). Receipt of immune globulins, blood or blood-derived products in the past 3 months. 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 study (specifically, but not limited to, subjects with persistent complement deficiency, with anatomic or functional asplenia, or participants traveling 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 study or to a vaccine containing any of the same substances. Laboratory confirmed / self-reported thrombocytopenia, contraindicating IM vaccination in the Investigator's judgment Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating IM vaccination in the Investigator's judgement. History of Guillain-Barre syndrome. History of convulsions. History of an Arthus-like reaction after vaccination with a tetanus toxoid-containing vaccine and a diphtheria toxoid-containing vaccine within 10 years of the proposed study vaccination. Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily. Current alcohol abuse or drug addiction. Chronic illness that, in the opinion of the Investigator, was at a stage where it might interfere with study conduct or completion. Moderate or severe acute illness/infection (according to Investigator judgment) on the day of vaccination or febrile illness (temperature greater than or equal to (>=) 99.5 degree Fahrenheit or >= 37.5 degree Celsius). A prospective participant should not be included in the study until the condition had resolved or the febrile event had subsided. Receipt of oral or injectable antibiotic therapy within 72 hours prior to the first blood draw. Identified as an Investigator or employee of the Investigator or study center with direct involvement in the proposed study, or identified as an immediate family member (i.e., parent, spouse, natural or adopted child) of the Investigator or employee with direct involvement in the proposed study. The above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

Ages Eligible for Study
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Minimum Age: 2 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group 1: MenACYW Conjugate Vaccine<br>Participants received a single intramuscular (IM) dose of MenACYW Conjugate vaccine on Day 0. | Biological: Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine (MenACYW Conjugate Vaccine)<br>* Pharmaceutical form: Liquid solution Route of administration: IM<br>|
| Active Comparator: Group 2: Menactra® vaccine<br>Participants received a single IM dose of Menactra® vaccine on Day 0. | Biological: Meningococcal (Groups A, C, Y and W 135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine<br>* Pharmaceutical form: Liquid solution Route of administration: IM<br>* Other names: Menactra®;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants With Vaccine Seroresponse For Meningococcal Serogroup A, C, Y And W Following Vaccination With MenACYW Conjugate and Menactra® Vaccine: Non-Inferiority Analysis | Antibody titers against meningococcal serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA). The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer greater than or equal to (>=) 1:16 for participants with pre-vaccination hSBA titer less than (<) 1:8, or a >= 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer >= 1:8. | Day 30 (post-vaccination) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants With Vaccine Seroresponse For Meningococcal Serogroup A, C, Y And W Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer >=1:16 for participants with pre-vaccination hSBA titer <1:8, or a >= 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer >= 1:8. | Day 30 (post-vaccination) | 
| Percentage of Participants With hSBA Antibody Titer >=1:4 and >=1:8 Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. Percentage of participants With hSBA antibody titers >=1:4 and >=1:8 for serogroups A, C, Y, and W were reported in the outcome measure. | Day 0 (pre-vaccination); Day 30 (post-vaccination) | 
| Geometric Mean Titers (GMTs) of Antibodies Against Meningococcal Serogroup A, C, Y And W Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | GMTs of antibodies against meningococcal serogroups A, C, Y, and W were measured by hSBA. Titers were expressed in terms of 1/dilution. | Day 0 (pre-vaccination); Day 30 (post-vaccination) | 
| Percentage of Participants With hSBA Titers Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. Percentage of participants with hSBA titers <1:4, 1:4, 1:8, 1:16,1:32, 1:64, 1:128, 1:256, 1:512, 1:1024, 1:2048 and 1:4096 for serogroups A, C, Y, and W; with hSBA titers of 1:8192 for serogroup Y; and with hSBA titers of 1:8192, 1:16384, 1:32768 for serogroup C were reported. | Day 30 (post-vaccination) | 
| Percentage of Participants With >=4-Fold Rise In hSBA Titers Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. | From Baseline (Day 0) to Day 30 (post-vaccination) | 
| Number of Participants Reporting Immediate Adverse Events (AEs) Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | An unsolicited AE was an observed AE that did not fulfill the conditions prelisted in the case report book (CRB) in terms of diagnosis and/or onset window post-vaccination. All participants were observed for 30 minutes after vaccination, and any unsolicited systemic AEs occurred during that time were recorded as immediate unsolicited AEs in the CRB. | Within 30 minutes post-vaccination | 
| Number of Participants Reporting Solicited Injection Site And Systemic Reactions Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | A solicited reaction was an expected adverse reaction (sign or symptom) observed and reported under the conditions (nature and onset) prelisted (i.e., solicited) in the CRB and considered as related to the administered vaccination. Solicited injection site reactions included pain, erythema, swelling, and induration. Solicited systemic reactions included fever, headache, malaise and myalgia. | Within 7 days post-vaccination | 
| Number of Participants Reporting Unsolicited Adverse Events Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | An unsolicited AE was an observed AE that did not fulfill the conditions prelisted in the CRB in terms of diagnosis and/or onset window post-vaccination. | Up to 30 days post-vaccination | 
| Number of Participants Reporting Serious Adverse Events (SAEs) Following Vaccination With MenACYW Conjugate and Menactra® Vaccine | An SAE was any untoward medical occurrence that at any dose resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or was an important medical event. | From Day 0 up to 30 days post-vaccination |