Clinical Trial: A Study Evaluating 13-Valent Pneumococcal Conjugate Vaccine (13vPnC) In Healthy Infants In China

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: A Phase 3, Randomized, Active-controlled Trial Evaluating the Safety, Tolerability, and Immunogenicity of a 13vPnC Vaccine Compared With a 7vPnC in Healthy Infants in China

Brief Summary: This study is primarily designed to evaluate the IgG immune responses to the 13 pneumococcal serotypes induced by 13vPnC compared with the immune responses induced by 7vPnC when measured 1 month after the infant series, and to evaluate the acceptability of the safety profile of 13vPnC as measured by the incidence rates of local reactions, systemic events and adverse events.

Detailed Summary:
Sponsor: Pfizer

Current Primary Outcome:

  • Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.35 mcg/mL 1 Month After the Infant Series in Group 1 And Group 2. [ Time Frame: 1 month after the infant series (6 Months of age) ]
  • Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.35 mcg/mL 1 Month After the Infant Series in Group 3. [ Time Frame: 1 month after the infant series (7 Months of age) ]
  • Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Infant Series in Group 1 and Group 2. [ Time Frame: 1 month after the infant series (6 Months of age) ]
  • Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Infant Series in Group 3. [ Time Frame: 1 month after the infant series (7 Months of age) ]
  • Percentage of Participants Reporting Adverse Events in Group 1 and Group 2. [ Time Frame: Approximately 16 months from the participation into the study to the end of study ]
  • Percentage of Participants Reporting Adverse Events in Group 3 and Group 4. [ Time Frame: Approximately 16 months from the participation into study to the end of study ]
  • Percentage of Participants Reporting Pre-Specified Local Reactions In the 7 Days After Each Pneumococcal Vaccination in Group 1 and Group 2. [ Time Frame: Seven days after each pneumococcal vaccination dose within the period up to 12 months ]
  • Percentage of Participants Reporting Pre-Specified Local Reactions In the 7 Days

    Original Primary Outcome: Same as current

    Current Secondary Outcome:

    • Percentage of Participants In A Subset Achieving Serotype-specific Opsonophagocytic Activity (OPA) Titer ≥ Lower Limit Of Quantitation (LLOQ) 1 Month After the Infant Series in Group 1 And Group 2. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Percentage of Participants In A Subset Achieving Serotype-specific Opsonophagocytic Activity (OPA) Titer ≥ Lower Limit Of Quantitation (LLOQ) 1 Month After the Infant Series in Group 3. [ Time Frame: 1 month after the infant series (7 Months of age) ]
    • Serotype-specific Opsonophagocytic Activity (OPA) Geometric Mean Titer (GMT) 1 Month After the Infant Series in Group 1 and Group 2. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Serotype-specific Opsonophagocytic Activity (OPA) Geometric Mean Titer (GMT) 1 Month After the Infant Series in Group 3. [ Time Frame: 1 month after the infant series (7 Months of age) ]
    • Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Toddler Dose in Group 2 and Group 3. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]
    • Percentage of Participants In A Subset Achieving Serotype-specific Opsonophagocytic Activity (OPA) Titer ≥ Lower Limit Of Quantitation (LLOQ) 1 Month After the Toddler Dose in Group 2 and Group 3. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]
    • Serotype-specific Opsonophagocytic Activity (OPA) Geometric Mean Titer (GMT) 1 Month After the Toddler Dose in Group 2 and Group 3. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]
    • Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.35 mcg/mL 1 Month After the Infant Series in Group 4. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Infant Series in Group 4. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Toddler Dose in Group 4. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]
    • Percentage of Participants In A Subset Achieving Serotype-specific Opsonophagocytic Activity (OPA) Titer ≥ Lower Limit Of Quantitation (LLOQ) 1 Month After the Infant Series in Group 4. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Percentage of Participants In A Subset Achieving Serotype-specific Opsonophagocytic Activity (OPA) Titer ≥ Lower Limit Of Quantitation (LLOQ) 1 Month After the Toddler Dose in Group 4. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]
    • Serotype-specific Opsonophagocytic Activity (OPA) Geometric Mean Titer (GMT) 1 Month After the Infant Series in Group 4. [ Time Frame: 1 month after the infant series (6 Months of age) ]
    • Serotype-specific Opsonophagocytic Activity (OPA) Geometric Mean Titer (GMT) 1 Month After the Toddler Dose in Group 4. [ Time Frame: 1 month after the toddler dose (13 Months of age) ]


    Original Secondary Outcome: Same as current

    Information By: Pfizer

    Dates:
    Date Received: July 11, 2012
    Date Started: August 2012
    Date Completion:
    Last Updated: July 15, 2014
    Last Verified: July 2014