NCT01482052

Safety Study of Group A, C, Y & W-135 Meningococcal Polysaccharide Diphtheria Toxoid Conjugate Vaccine for Meningitis

A Double-Blind, Randomized, Controlled, Two Arm Phase 1 Clinical Trial of the Safety and Immunogenicity of Group A, C, Y & W-135 Meningococcal Polysaccharide DT Conjugate Vaccine: NmVac4-A/C/Y/W-135-DT™

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 60 (actual)
• Sponsor: JN-International Medical Corporation · Industry
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to evaluate the safety of a new conjugate vaccine, NmVac4-A/C/Y/W-135-DT, compared to the safety of a similar, licensed meningococcal A/C/Y/W-135-DT conjugate vaccine. The investigators will also evaluate the production of antibodies to of NmVac4-A/C/Y/W-135-DT™ conjugate vaccine compared to the licensed vaccine, as a measure of vaccine effectiveness.

Detailed description

Meningococcal disease is a potentially life-threatening bacterial infection. The disease most commonly is expressed as either meningococcal meningitis, an inflammation of the membranes surrounding the brain and spinal cord, or meningococcemia, the presence of bacteria in the blood. The most common symptoms include high fever, headache, neck stiffness, confusion, nausea, vomiting, lethargy, and rash. If not treated the disease can progress rapidly and can lead to shock and death, often within hours of the onset of symptoms. Neisseria meningitidis capsular polysaccharides are poor immunogens. However, conjugation of bacterial polysaccharides to immunogenic carrier proteins generally results in conjugates that induce strong anti-polysaccharide T-helper cell dependent immune responses, creating a longer-lasting immune response and thus protection against meningococcal infection. This study compares safety and antibody production induced by one intramuscular injection of either NmVac4-A/C/Y/W-135-DT or a licensed meningococcal A/C/Y/W-135-DT conjugate vaccine. Participants will attend a screening visit up to 4 weeks prior to Day 0, then will attend study visits for 8 weeks. There will be a study phone call at Days 2-3, then a post-study telephone call to subjects to assess safety at 26 weeks.

Conditions

• Meningococcal Meningitis
• Meningococcal Infections

Interventions

Type	Name	Description
BIOLOGICAL	meningococcal meningitis conjugate vaccine, quadrivalent	NmVac4-A/C/Y/W-135-DT™conjugate is a vaccine in liquid form composed of purified polysaccharides (PS) conjugated to diphtheria toxoid. Single intramuscular 0.5 mL dose contains 4 µg each Serogroup A, C, W-135, Y PS conjugated to approximately 16 µg total diphtheria toxoid.
BIOLOGICAL	meningococcal meningitis conjugate vaccine, quadrivalent	Meningococcal (Groups A,C,Y and W-135-DT) Polysaccharide Conjugate Vaccine 0.5 mL dose, intramuscular. Single dose contains 4 µg each Serogroup A, C, W-135, Y PS conjugated to approximately 48 µg total diphtheria toxoid.

Timeline

• Start date: 2011-11-01
• Primary completion: 2013-01-01
• Completion: 2013-01-01
• First posted: 2011-11-30
• Last updated: 2013-01-14

Locations

1 site across 1 country: United States