Study Evaluating 13-valent Pneumococcal Conjugate Vaccine in Healthy Infants

Phase 3

Completed

• Conditions: Vaccines, Pneumococcal Conjugate Vaccine

• Registration Number: NCT00475033
• Lead Sponsor: Wyeth is now a wholly owned subsidiary of Pfizer

Brief Summary

The purpose of this study will be to evaluate the safety, tolerability and immunogenicity of 13-valent pneumococcal conjugate vaccine in healthy infants given with routine pediatric vaccinations in Canada. Immune responses induced by the infant series (NeisVac-C® and Pentacel®)and toddler dose(NeisVac-C®)of routine pediatric vaccines when administered with 13-valent pneumococcal conjugate vaccine will be studied for noninferiority to the immune responses when administered with 7-valent pneumococcal conjugate vaccine. Safety profile and immunogenicity of 13-valent pneumococcal conjugate vaccine will also be evaluated.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2007-05-15
• Study First Submitted QC: 2007-05-15
• Study First Posted: 2007-05-17
• Study Start: 2007-06
• Primary Completion: 2009-05
• Study Completion: 2009-05
• Results First Submitted: 2010-05-04
• Results First Submitted QC: 2010-05-04
• Results First Posted: 2010-06-04
• Status Verified: 2011-04
• Last Update Submitted: 2011-04-18
• Last Update Posted: 2011-04-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 603

Inclusion Criteria

• Healthy 2-month old infants (42 to 98 days)
• Available for the duration of the study and reachable by telephone

Exclusion Criteria

• Previous vaccination with licensed or investigational pneumococcal, Hib conjugate, diphtheria, tetanus, pertussis, polio, or meningococcal vaccine
• Previous anaphylactic reaction to any vaccine or vaccine-related component.
• Bleeding disorder, immune deficiency or suppression, or significant chronic or congenital disease
• Receipt of blood products or gamma globulin

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Percentage of Subjects Achieving Predefined Antibody Level to Pertussis Antigens in the 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series	1 month after the 3-dose infant series (7 months of age)	Percentage of subjects achieving predefined antibody threshold ≥5 enzyme-linked immunosorbent assay (ELISA) units per mL (EU/mL) along with the corresponding 95 % CI for concomitant antigens pertussis (pertussis toxoid \[PT\], filamentous hemagglutinin \[FHA\], and pertactin \[PRN\]) and ≥ 2.2 EU/mL fimbrial agglutinogens (FIM) are presented. Non-inferiority was declared if the lower limit of the 2-sided 95% CI for the difference between the 2 treatment groups \> -10%.
Percentage of Subjects Achieving Predefined Antibody Level ≥0.15 Micrograms Per mL (μg/mL) for Polyribosylribitol Phosphate (PRP) in Hib in the 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series	1 month after the 3-dose infant series (7 months of age)	Percentage of subjects achieving predefined antibody threshold ≥0.15 μg/mL along with the corresponding 95 percent (%) confidence interval (CI) for concomitant antigen PRP in Hib are presented. Non-inferiority was declared if the lower limit of the 2-sided 95% CI for the difference between the 2 treatment groups \> -10%.
Geometric Mean Titer (GMT) of Meningococcal C Antigen in the 13vPnC Group Relative to 7vPnC Group After 2 Doses of NeisVac-C® in the Infant Series	1 month after 2 doses of NeisVac-C® in the infant series (7 months of age)	Antibody geometric mean titer of meningococcal C antigen are presented. GMT and corresponding 2-sided 95% CI were constructed by back transformation of the CI for the mean of the logarithmically transformed assay results computed using the Student t distribution. In addition, the 2-sided 95% confidence interval on the ratio of the geometric means for 13vPnC relative to 7vPnC was constructed by back transformation of the Student t distribution for the mean difference of the measures on the logarithmic scale.
Percentage of Subjects Achieving Predefined Antibody Level ≥1:8 for Meningococcal C Serum Bactericidal Assay (SBA) in the 13vPnC Group Relative to 7vPnC Group After 2 Doses of NeisVac-C® in the Infant Series	1 month after 2 doses of NeisVac-C® in the infant series (7 months of age)	Percentage of subjects achieving predefined antibody threshold ≥1:8 along with the corresponding 95 percent (%) confidence interval (CI) for concomitant antigen meningococcal C SBA are presented. Non-inferiority was declared if the lower limit of the 2-sided 95% CI for the difference between the 2 treatment groups \> -10%.
Geometric Mean Concentration (GMC) of Pertussis Antigens in the 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series	1 month after the 3-dose Infant Series (7 months of age)	Antibody geometric mean concentration of pertussis antigens (PT, FHA, PRN, and FIM) as measured by EU/mL are presented. GMC and corresponding 2-sided 95% CI were constructed by back transformation of the CI for the mean of the logarithmically transformed assay results computed using the Student t distribution. In addition, the 2-sided 95% confidence intervals on the ratio of the GMCs for 13vPnC relative to 7vPnC were constructed by back transformation of the Student t distribution for the mean difference of the measures on the logarithmic scale.
Geometric Mean Concentration (GMC) of PRP in Hib in the 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series	1 month after the 3-dose infant series (7 months of age)	Antibody geometric mean concentration of PRP in Hib as measured by µg/mL are presented. GMC and corresponding 2-sided 95% CI were constructed by back transformation of the CI for the mean of the logarithmically transformed assay results computed using the Student t distribution. In addition, the 2-sided 95% confidence interval on the ratio of the GMCs for 13vPnC relative to 7vPnC was constructed by back transformation of the Student t distribution for the mean difference of the measures on the logarithmic scale.

Secondary Outcome Measures

Name	Time	Method
Geometric Mean Titer (GMT) of Meningococcal C Antigen in the 13vPnC Group Relative to 7vPnC Group After the Toddler Dose	1 month after the toddler dose (13 months of age)	Antibody geometric mean titer of meningococcal C antigen are presented. GMT and corresponding 2-sided 95% CI were constructed by back transformation of the CI for the mean of the logarithmically transformed assay results computed using the Student t distribution. In addition, the 2-sided 95% confidence interval on the ratio of the GMs for 13vPnC relative to 7vPnC was constructed by back transformation of the Student t distribution for the mean difference of the measures on the logarithmic scale.
Percentage of Subjects Achieving Predefined Antibody Level ≥1:8 for Meningococcal C SBA in the 13vPnC Group Relative to 7vPnC Group After the Toddler Dose of NeisVac-C®	1 month after the toddler dose of NeisVac-C® (13 months of age)	Percentage of subjects achieving predefined antibody threshold ≥1:8 along with the corresponding 95% CI for concomitant antigen meningococcal C SBA are presented. Non-inferiority was declared if the lower limit of the 2-sided 95% CI for the difference between the 2 treatment groups \> -10%.
Percentage of Subjects Achieving Predefined Antibody Level ≥1.0 μg/mL for PRP in Hib in the 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series	1 month after the 3-dose infant series (7 months of age)	Percentage of subjects achieving predefined antibody threshold ≥1.0 μg/mL along with the corresponding 95% CI for concomitant antigen PRP in Hib are presented. Non-inferiority was declared if the lower limit of the 2-sided 95% CI for the difference between the 2 treatment groups \> -10%.