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Completed

NCT Number: NCT00743652

Study Evaluating the Impact of the 13-valent Pneumococcal Conjugate Vaccine (13vPnC) in Alaskan Native Children.

This study is to evaluate the safety, immunogenicity and impact of 13-valent Pneumococcal conjugate vaccine in Alaskan Native Children.

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Key information

Age range

42 day–5 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Pfizer Investigational Site, Akiak, Alaska, United States

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female infants 6 weeks to < 5years of age in good health, available for the entire study period and reachable by phone, parents able to complete all relevant study procedures.
  • Infants who have received Prevnar are eligible to participate, but this is not required.
  • Infants participating in the blood draws must live in a specific identified area (Yukon Kuskokwim Delta region)

Exclusion criteria

  • Contraindication to vaccination with pneumococcal vaccine or allergic reaction to any vaccines or vaccine related components, immune deficiency, bleeding disorder or major known congenital malformation.

Treatment and study plan

13-valent Pneumococcal Conjugate Vaccine

Biological

4 doses of 13vPnC (0.5ml, IM) will be administered. (3 doses infant series, and 1 toddler dose)

Primary outcomes

  1. Percentage of Participants Achieving Serotype-Specific Pneumococcal Immunoglobulin G (IgG) Antibody Level ≥0.35 Micrograms Per Milliliter (Mcg/mL) 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2 and 3 achieving predefined antibody threshold ≥0.35 mcg/mL along with the corresponding 95% confidence interval (CI) for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  2. Percentage of Participants Achieving Serotype-Specific Pneumococcal IgG Antibody Level ≥0.35 Mcg/mL 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, and after vaccination 2 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving predefined antibody threshold ≥0.35 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  3. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.35 Mcg/mL 1 Month After the Relevant Catch-Up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Percentage of participants in 13vPnC Groups 4 and 5 achieving predefined antibody threshold ≥0.35 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

Secondary outcomes

  1. Percentage of Participants Achieving Serum IgG Antibody Level ≥0.35 Mcg/mL Prior to Vaccination With 13vPnC (Groups 4 and 5 Only)

    Time frame: 28 to 56 days before vaccination 2 for Group 4, and before the single vaccination in Group 5.

    Percentage of participants in 13vPnC Groups 4 and 5 achieving predefined antibody threshold ≥0.35 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  2. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥1.0 Mcg/mL 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving predefined antibody threshold ≥1.0 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  3. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥1.0 Mcg/mL 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, and after vaccination 2 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving predefined antibody threshold ≥1.0 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  4. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥1.0 Mcg/mL 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Percentage of participants in 13vPnC Groups 4 and 5 achieving predefined antibody threshold ≥1.0 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  5. Percentage of Participants Reporting Pre-Specified Local Reactions: Catch-up Dose 1

    Time frame: Day 1 through Day 7 after vaccination 1 for Group 4 and after the single vaccination in Group 5.

    Local reactions were reported by the parent/legal guardian using a diary card. Tenderness was scaled as Any (tenderness present); Significant (present and interfered with limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters [cm] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (> 7.0 cm). Participants may have been represented in more than 1 category.

  6. Percentage of Participants Reporting Pre-Specified Local Reactions: Catch-up Dose 2

    Time frame: Day 1 through Day 7 after vaccination 2 for Group 4

    Local reactions were reported by the parent/legal guardian using a diary card. Tenderness was scaled as Any (tenderness present); Significant (present and interfered with limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters [cm] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (> 7.0 cm). Participants may have been represented in more than 1 category.

  7. Percentage of Participants Reporting Pre-Specified Systemic Events: Catch-up Dose 1

    Time frame: Day 1 through Day 7 after vaccination 1 for Group 4 and after the single vaccination in Group 5.

    Systemic events (any fever 38 degrees Celsius [C] or higher, decreased appetite, irritability, increased sleep, decreased sleep, hives [urticaria], and use of antipyretic medication) were reported using a diary card. Participants may have been represented in more than 1 category.

  8. Percentage of Participants Reporting Pre-Specified Systemic Events: Catch-up Dose 2

    Time frame: Day 1 through Day 7 after vaccination 2 for Group 4

    Systemic events (any fever 38 degrees C or higher, decreased appetite, irritability, increased sleep, decreased sleep, hives [urticaria], and use of antipyretic medication) were reported using a diary card. Participants may have been represented in more than 1 category.

Other outcomes

  1. Number of Cases of Invasive Pneumococcal Disease (IPD) in Participants Less Than 5 Years of Age Due to Any Serotype Contained in 13vPnC

    Time frame: Baseline to 6 months after last vaccination

    In order to assess the impact of 13vPnC on the incidence of IPD in the Yukon Kuskokwim (YK) Delta region, the Centers for Disease Control and Prevention (CDC) Arctic Investigation Program (AIP) accessed IPD data through evaluation of ongoing statewide IPD surveillance in Alaska. The CDC's AIP followed IPD (including serotype and vaccination history) to show whether identified cases of IPD received Prevnar, 13vPnC, or both. These data were combined with statewide data and used to identify the overall trend in IPD in the YK Delta region after introduction of 13vPnC.

  2. Percentage of Participants Achieving Serotype-Specific Pneumococcal IgG Antibody Level ≥0.15 Mcg/mL 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving predefined antibody threshold ≥0.15 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  3. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.15 Mcg/mL 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, and after vaccination 2 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving predefined antibody threshold ≥0.15 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  4. Percentage of Participants Achieving Serotype-specific Pneumococcal IgG Antibody Level ≥0.15 Mcg/mL 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Percentage of participants in 13vPnC Groups 4 and 5 achieving predefined antibody threshold ≥0.15 mcg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. Exact 2-sided CI based upon the observed proportion of participants.

  5. Geometric Mean Concentration (GMC) for Serotype-Specific Pneumococcal IgG Antibodies 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Antibody GMCs (mcg/mL) for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. GMC (13vPnC) with 2-sided 95% CIs were evaluated. CIs are back transformations of confidence levels based on Student t distribution for mean logarithm of concentrations. GMCs were calculated using all participants with available data for specified blood draw.

  6. GMC for Serotype-Specific Pneumococcal IgG Antibodies 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, after vaccination 2 for Group 3.

    Antibody GMCs (mcg/mL) for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A). GMC (13vPnC) with 2-sided 95% CIs were evaluated. CIs are back transformations of confidence levels based on Student t distribution for mean logarithm of concentrations. GMCs were calculated using all participants with available data for specified blood draw.

  7. GMC for Serotype-specific Pneumococcal IgG Antibodies 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Antibody GMCs (mcg/mL) for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A) are presented. GMC (13vPnC) with 2-sided 95% CIs were evaluated. CIs are back transformations of confidence levels based on Student t distribution for mean logarithm of concentrations. GMCs were calculated using all participants with available data for specified blood draw.

  8. Percentage of Participants Achieving Opsonophagocytic Assay (OPA) Titers ≥Lower Limit of Quantitation (LLOQ) Measured 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2, and 3 achieving OPA with 95% CI for serotypes 4, 6B, 9V, 14, 18C, 19F, 23F, 1, 3, 5, 6A, 7F, and 19A. Exact 2-sided CI based upon the observed proportion of participants. The LLOQ in titers for each serotype was: Pn001, 18; Pn003, 12; Pn004, 21; Pn005, 29; Pn06A, 37; Pn06B, 43, Pn7F, 210; Pn09V, 345; Pn014, 35; Pn18C, 31; Pn19A, 18; Pn19F, 48; and Pn23F, 13. Limit of detection (LOD) established as lowest titer possible in assay, which was 8. OPA titers below LLOQ set to 0.5*LOD for analysis.

  9. Percentage of Participants Achieving OPA Titers ≥LLOQ Measured 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, and after vaccination 2 for Group 3.

    Percentage of participants in 13vPnC Groups 1, 2 and 3 achieving OPA with 95% CI for serotypes 4, 6B, 9V, 14, 18C, 19F, 23F, 1, 3, 5, 6A, 7F, and 19A. Exact 2-sided CI based upon the observed proportion of participants. The LLOQ in titers for each serotype was: Pn001, 18; Pn003, 12; Pn004, 21; Pn005, 29; Pn06A, 37; Pn06B, 43, Pn7F, 210; Pn09V, 345; Pn014, 35; Pn18C, 31; Pn19A, 18; Pn19F, 48; and Pn23F, 13. Limit of detection (LOD) established as lowest titer possible in assay, which was 8. OPA titers below LLOQ set to 0.5*LOD for analysis.

  10. Percentage of Participants Achieving OPA Titers ≥LLOQ Measured 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Percentage of participants in 13vPnC Groups 4 and 5 achieving OPA with 95% CI for serotypes 4, 6B, 9V, 14, 18C, 19F, 23F, 1, 3, 5, 6A, 7F, and 19A. Exact 2-sided CI based upon the observed proportion of participants. The LLOQ in titers for each serotype was: Pn001, 18; Pn003, 12; Pn004, 21; Pn005, 29; Pn06A, 37; Pn06B, 43, Pn7F, 210; Pn09V, 345; Pn014, 35; Pn18C, 31; Pn19A, 18; Pn19F, 48; and Pn23F, 13. Limit of detection (LOD) established as lowest titer possible in assay, which was 8. OPA titers below LLOQ set to 0.5*LOD for analysis.

  11. Pneumococcal OPA Geometric Mean Titers (GMTs) 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

    Antibody geometric mean titers as measured by OPA assay for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A). GMTs were calculated using all participants with available data for the specified blood draw. CIs for the GMTs are back transformations of confidence levels based on the Student t distribution for the mean logarithm of the titers.

  12. Pneumococcal OPA GMTs 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, after vaccination 2 for Group 3.

    Antibody geometric mean titers as measured by OPA assay for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A). GMTs were calculated using all subjects with available data for the specified blood draw. CIs for the GMTs are back transformations of confidence levels based on the Student t distribution for the mean logarithm of the titers.

  13. Pneumococcal OPA GMTs 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

    Antibody geometric mean titers as measured by OPA assay for 13 pneumococcal serotypes (serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F). GMTs were calculated using all participants with available data for the specified blood draw. CIs for the GMTs are back transformations of confidence levels based on the Student t distribution for the mean logarithm of the titers.

  14. Correlation of OPA and IgG Values for Each 13vPnC Serotype 1 Month After the Infant Series

    Time frame: 28 to 56 days after vaccination 3 for Group 1, after vaccination 2 for Group 2, and after vaccination 1 for Group 3.

  15. Correlation of OPA and IgG Values for Each 13vPnC Serotype 1 Month After the Toddler Dose

    Time frame: 28 to 56 days after vaccination 4 for Group 1, after vaccination 3 for Group 2, and after vaccination 2 for Group 3.

  16. Correlation of OPA and IgG Values for Each 13vPnC Serotype 1 Month After the Relevant Catch-up Dose

    Time frame: 28 to 56 days after vaccination 2 for Group 4, and after the single vaccination in Group 5.

Sponsors and collaborators

Lead sponsor

Pfizer

Industry

Registry information

Official study title

A Phase 3, Open Label Trial Evaluating the Safety, Immunogenicity and Impact of 13-valent Pneumococcal Conjugate Vaccine in Alaskan Native Children.

Important dates

Study start
2009
Primary completion
2010
Study completion
2010
First posted
Aug 29, 2008
Registry last updated
Mar 15, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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