Immune Lot Consistency, Immunogenicity, and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine

Meningitis Clinical Trial

Official title: Immune Lot Consistency, Immunogenicity, and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Adolescents and Adults Aged 10 to 55 Years

Status Completed

Clinical Trial Summary

The purpose of the study was to evaluate immune lot consistency of Meningococcal Polysaccharide (Serogroups A, C, Y and W) Tetanus Toxoid (MenACYW) Conjugate vaccine and the immune non-inferiority compared to the licensed vaccine Menactra®, and describe the safety and additional immunogenicity of these study vaccines in adolescents and adults 10 to 55 years of age in the United States (US).

Primary Objectives:

• To demonstrate the immune lot consistency of the antibody responses to meningococcal serogroups A, C, Y, and W following the administration of a single dose of MenACYW Conjugate vaccine with respect to serum bactericidal assay using human complement (hSBA) geometric mean titers (GMTs).

• 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 MenACYW Conjugate vaccine (pooled Lots 1 to 3) compared to those observed following the administration of a single dose of Menactra®.

Secondary 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 MenACYW Conjugate vaccine (pooled Lots 1 to 3) compared to those observed following the administration of a single dose of Menactra® in the adult population (18 to 55 years old).

• 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 MenACYW Conjugate vaccine (pooled Lots 1 to 3) compared to those observed following the administration of a single dose of Menactra® in the adolescent population (10 to 17 years old).

• To compare the hSBA vaccine seroresponses of meningococcal serogroups A, C, Y, and W for each of 3 lots of MenACYW Conjugate vaccine 30 days (+14 days) after vaccination.

• To compare the hSBA antibody GMTs of meningococcal serogroups A, C, Y, and W following the administration of MenACYW Conjugate vaccine to those observed following the administration of Menactra®.

Observational Objectives:

• To describe the safety profile of MenACYW Conjugate vaccine and that of the licensed Menactra®.

Clinical Trial Description

Healthy meningococcal-vaccine naïve adolescents and adults were randomized and received a single dose of either MenACYW Conjugate vaccine from 1 of the 3 lots (Lot 1, Lot 2, or Lot 3) or Menactra®. They were assessed for immunogenicity at baseline (pre-vaccination) and at 30 to 44 days post-vaccination. Safety information were collected post-vaccination and throughout the entire study. ;

Related Conditions & MeSH terms

• Meningitis
• Meningitis, Meningococcal
• Meningococcal Infections
• Meningococcal Meningitis

• NCT number: NCT02842853
• Study type: Interventional
• Source: Sanofi
• Status: Completed
• Phase: Phase 3
• Start date: July 15, 2016
• Completion date: February 28, 2017