Antibody Responses Following Meningococcal Tetravalent (A, C, Y, and W-135) Conjugate Vaccination in Healthy Adults

Meningitis Clinical Trial

Official title:

Antibody Responses Following Meningococcal Tetravalent (A, C, Y, and W-135) Conjugate Vaccination in Healthy Adults Who Were Either Previously Vaccinated With Unconjugated Meningococcal Polysaccharide (Serogroups A, C or Serogroups A, C, Y, and W-135) Vaccine or Not Vaccinated With Meningococcal Vaccine

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT00772629
• Other study ID #: MTA16
• Status: Terminated
• Phase: Phase 2
• First received: October 13, 2008
• Last updated: January 21, 2014
• Start date: January 2004
• Est. completion date: April 2004

Study information

• Verified date: January 2014
• Source: Sanofi
• Contact: n/a
• Is FDA regulated: No
• Health authority: United Kingdom: Medicines and Healthcare Products Regulatory Agency
• Study type: Interventional

Clinical Trial Summary

This study was designed to generate data for the assessment of Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®) when given to adults aged 18 to 55 years.

Primary Objective:

To describe the antibody response to each serogroup prior to, and 4 to 6 weeks following, the administration of one dose of the investigational Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®), as measured by serum bactericidal activity using baby rabbit complement (SBA BR) in participants in each of the two study groups.

Secondary Objective:

To collect reference sera for the development and refinement of laboratory assays for the measurement of antibody responses to serogroups Y and W 135.

Description:

Enrollment was terminated before the planned sample size was achieved because the principal investigator and the Sponsor decided that sufficient sera had been obtained to meet the secondary objective of the study.

There were no safety concerns involved in the decision to stop enrollment. Subjects that were enrolled at the time completed the study as per protocol, the last subject last visit was on 29 April 2004.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 18
• Est. completion date: April 2004
• Est. primary completion date: April 2004
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 55 Years

Eligibility

Inclusion Criteria :

• Participant was at least 18 years of age but not yet 56 years of age at the time of vaccination.

• Participant had received either unconjugated meningococcal polysaccharide (serogroups A and C, or A, C, Y, and W 135) vaccine at least one year prior to enrollment (for assignment to Group 2) or had no prior history of meningococcal vaccination (for assignment to Group 1).

• Participant had signed Ethics Committee-approved informed consent form.

Exclusion Criteria :

• Serious chronic disease (i.e., cardiac, renal, neurologic, metabolic, rheumatologic, psychiatric, etc.)

• Known or suspected impairment of immunologic function

• Acute medical illness with or without fever within the last 72 hours or an oral temperature = 38°C at the time of inclusion

• History of documented invasive meningococcal disease

• Administration of immune globulin or other blood products within the last three months, or injected or oral corticosteroids or other immunomodulatory therapy within six weeks of the study vaccine. Individuals on a tapering dose schedule of oral steroids lasting < 7 days were allowed to be included in the trial as long as they had not received more than one course within the last two weeks prior to enrollment.

• Antibiotic therapy within the 72 hours prior to vaccination or 72 hours prior to drawing the blood sample at Visit 2

• Received unconjugated meningococcal polysaccharide (serogroups A and C, or A, C, Y, and W 135) vaccine within the one-year period prior to enrollment or a conjugated meningococcal vaccine at any time prior to enrollment

• Received any vaccine in the 28-day period prior to enrollment, or scheduled to receive any vaccination during participation in the study

• Suspected or known hypersensitivity to any of the vaccine components

• Unavailable for the entire study period, or unable to attend the scheduled visits or to comply with the study procedures

• Enrolled in another clinical trial

• In females, pregnancy confirmed by positive urine test result

• In females, current breastfeeding.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

• Meningitis
• Meningococcemia

Intervention

Biological:
• Meningococcal Polysaccharide Diphtheria Toxoid Conjugate
0.5 mL, Intramuscular
• Meningococcal Polysaccharide Diphtheria Toxoid Conjugate
0.5 mL, Intramuscular

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Sanofi Pasteur, a Sanofi Company

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Participants With a = 4-fold Rise in Antibody Titers as Measured by Serum Bactericidal Assay (SBA) From Day 0 to Day 28.	Number of participants with a minimum of 4 fold rise in Antibody Titers as Measured SBA to each vaccine meningococcal serogroups from Baseline to Day 28.	Day 28 post-vaccination	No

External Links

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