Clinical Trial Results:
A phase IV, single-blind, randomized, multicenter study to assess the immunogenicity and safety of GSK Biologicals’ dTpa vaccine (Boostrix™) using a new syringe presentation in healthy adolescents aged 10–15 years.
Summary
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EudraCT number |
2013-003768-30 |
Trial protocol |
Outside EU/EEA |
Global end of trial date |
03 Sep 2012
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Results information
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Results version number |
v1 |
This version publication date |
11 May 2016
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First version publication date |
13 May 2015
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Other versions |
v2 , v3 |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
114778
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
- | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
GlaxoSmithKline Biologicals
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Sponsor organisation address |
Rue de l’Institut 89, Rixensart, Belgium,
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Public contact |
Clinical Trials Call Center, GlaxoSmithKline Biologicals, 44 2089904466, GSKClinicalSupportHD@gsk.com
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Scientific contact |
Clinical Trials Call Center, GlaxoSmithKline Biologicals, 44 2089904466, GSKClinicalSupportHD@gsk.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
Yes
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
10 Jan 2014
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
03 Sep 2012
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Global end of trial reached? |
Yes
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Global end of trial date |
03 Sep 2012
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
To demonstrate that Boostrix administered using the new syringe presentation is non-inferior to Boostrix administered using the previous syringe presentation, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Protection of trial subjects |
All subjects were supervised after vaccination/product administration with appropriate medical treatment readily available. Vaccines were administered by qualified and trained personnel. Vaccines were administered only to eligible subjects that had no contraindications to any components of the vaccines.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
05 Jul 2011
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Mexico: 376
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Country: Number of subjects enrolled |
Chile: 295
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Worldwide total number of subjects |
671
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EEA total number of subjects |
0
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
671
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
0
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
- | ||||||||||||||||||
Pre-assignment
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Screening details |
During the screening the following steps occurred: check for inclusion/exclusion criteria, contraindications/precautions, medical history of the subjects and signing informed consent forms. | ||||||||||||||||||
Period 1
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Period 1 title |
Overall Study (overall period)
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Is this the baseline period? |
Yes | ||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Single blind | ||||||||||||||||||
Roles blinded |
Subject | ||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Boostrix-New Group | ||||||||||||||||||
Arm description |
- | ||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||
Investigational medicinal product name |
Boostrix™
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Investigational medicinal product code |
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Other name |
dTpa
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Pharmaceutical forms |
Injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
One dose of vaccine, in a new syringe presentation, was administered in the deltoid of the non-dominant arm, at Day 0.
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Arm title
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Boostrix-Prev Group | ||||||||||||||||||
Arm description |
- | ||||||||||||||||||
Arm type |
Active comparator | ||||||||||||||||||
Investigational medicinal product name |
Boostrix™
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Investigational medicinal product code |
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Other name |
dTpa
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Pharmaceutical forms |
Injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
One dose of vaccine, in a previous syringe presentation, was administered in the deltoid of the non-dominant arm, at Day 0.
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Baseline characteristics reporting groups
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Reporting group title |
Boostrix-New Group
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Boostrix-Prev Group
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Boostrix-New Group
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Reporting group description |
- | ||
Reporting group title |
Boostrix-Prev Group
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Reporting group description |
- |
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End point title |
Number of seropositive subjects against Diphtheria and Tetanus with antibody concentrations (anti-D, anti-T) above or equal to (≥)0.1 IU/mL [1] | |||||||||||||||||||||
End point description |
A seropositive subject was defined a subject with antibody concentrations ≥ 0.1 international units per milliliter (IU/mL).
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End point type |
Primary
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End point timeframe |
Before (PRE) and one month after (POST) booster vaccination
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The analysis of the primary endpoint was descriptive i.e. no statistical hypothesis test was performed. |
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No statistical analyses for this end point |
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End point title |
Number of seroprotected subjects against Diphtheria and Tetanus with antibody concentrations (anti-D, anti-T) above ≥1 IU/mL [2] | |||||||||||||||||||||
End point description |
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End point type |
Primary
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End point timeframe |
Before (PRE) and one month after (POST) booster vaccination
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Notes [2] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The analysis of the primary endpoint was descriptive i.e. no statistical hypothesis test was performed. |
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No statistical analyses for this end point |
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End point title |
Anti-D and Anti-T antibody concentrations | ||||||||||||||||||||||||
End point description |
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End point type |
Primary
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End point timeframe |
Before (PRE) and one month after (POST) booster vaccination
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Statistical analysis title |
Adjusted ratios of GMCs for anti-D | ||||||||||||||||||||||||
Statistical analysis description |
To demonstrate that the dTpa vaccine administered using the new-syringe presentation was non-inferior to dTpa vaccine administered using the previous-syringe, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Comparison groups |
Boostrix-New Group v Boostrix-Prev Group
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Number of subjects included in analysis |
640
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [3] | ||||||||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||||||||
Parameter type |
Adjusted Ratio | ||||||||||||||||||||||||
Point estimate |
0.96
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.85 | ||||||||||||||||||||||||
upper limit |
1.09 | ||||||||||||||||||||||||
Notes [3] - The upper limit (UL) of the 95% confidence interval (CI) on the geometric mean concentration (GMC) ratios [Boostrix-Prev Group over Boostrix-New Group] for anti-diphtheria (anti-D)antibodies was ≤ 1.5 (clinical limit for non-inferiority). |
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Statistical analysis title |
Adjusted ratios of GMCs for anti-T | ||||||||||||||||||||||||
Statistical analysis description |
To demonstrate that the dTpa vaccine administered using the new-syringe presentation was non-inferior to dTpa vaccine administered using the previous-syringe, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Comparison groups |
Boostrix-New Group v Boostrix-Prev Group
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Number of subjects included in analysis |
640
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [4] | ||||||||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||||||||
Parameter type |
Adjusted Ratio | ||||||||||||||||||||||||
Point estimate |
0.97
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.86 | ||||||||||||||||||||||||
upper limit |
1.1 | ||||||||||||||||||||||||
Notes [4] - The upper limit (UL) of the 95% confidence interval (CI) on the geometric mean concentration (GMC) ratios [Boostrix-Prev Group over Boostrix-New Group] for anti-tetanus (anti-T) antibodies was ≤ 1.5 (clinical limit for non-inferiority). |
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End point title |
Number of subjects with anti-pertussis toxoid (anti-PT), anti-filamentous haemagglutin (anti-FHA) and anti pertactin (anti-PRN) antibody concentrations ≥5 EU/mL [5] | |||||||||||||||||||||||||||
End point description |
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End point type |
Primary
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End point timeframe |
Before (PRE) and one month after (POST) booster vaccination
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Notes [5] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The analysis of the primary endpoint was descriptive i.e. no statistical hypothesis test was performed. |
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No statistical analyses for this end point |
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End point title |
Anti-PT, Anti-FHA, Anti-PRN antibody concentrations | ||||||||||||||||||||||||||||||
End point description |
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End point type |
Primary
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End point timeframe |
Before (PRE) and one month after (POST) booster vaccination
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Statistical analysis title |
Adjusted ratios of GMCs for anti-PT | ||||||||||||||||||||||||||||||
Statistical analysis description |
To demonstrate that the dTpa vaccine administered using the new-syringe presentation was non-inferior to dTpa vaccine administered using the previous-syringe, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Comparison groups |
Boostrix-New Group v Boostrix-Prev Group
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Number of subjects included in analysis |
640
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [6] | ||||||||||||||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||||||||||||||
Parameter type |
Adjusted Ratio | ||||||||||||||||||||||||||||||
Point estimate |
0.92
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.82 | ||||||||||||||||||||||||||||||
upper limit |
1.04 | ||||||||||||||||||||||||||||||
Notes [6] - The upper limit (UL) of the 95% confidence interval (CI) on the geometric mean concentration (GMC) ratios [Boostrix-Prev Group over Boostrix-New Group] for anti-pertussis toxoid (anti-PT) antibodies was ≤ 1.5 (clinical limit for non-inferiority). |
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Statistical analysis title |
Adjusted ratios of GMCs for anti-FHA | ||||||||||||||||||||||||||||||
Statistical analysis description |
To demonstrate that the dTpa vaccine administered using the new-syringe presentation was non-inferior to dTpa vaccine administered using the previous-syringe, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Comparison groups |
Boostrix-New Group v Boostrix-Prev Group
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Number of subjects included in analysis |
640
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [7] | ||||||||||||||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||||||||||||||
Parameter type |
Adjusted Ratio | ||||||||||||||||||||||||||||||
Point estimate |
0.92
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.83 | ||||||||||||||||||||||||||||||
upper limit |
1.03 | ||||||||||||||||||||||||||||||
Notes [7] - The upper limit (UL) of the 95% confidence interval (CI) on the geometric mean concentration (GMC) ratios [Boostrix-Prev Group over Boostrix-New Group] for anti-filamentous haemagglutinin (anti-FHA) antibodies was ≤ 1.5 (clinical limit for non-inferiority). |
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Statistical analysis title |
Adjusted ratios of GMCs for anti-PRN | ||||||||||||||||||||||||||||||
Statistical analysis description |
To demonstrate that the dTpa vaccine administered using the new-syringe presentation was non-inferior to dTpa vaccine administered using the previous-syringe, in terms of immune response to all vaccine antigens, one month after booster vaccination.
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Comparison groups |
Boostrix-New Group v Boostrix-Prev Group
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Number of subjects included in analysis |
640
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [8] | ||||||||||||||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||||||||||||||
Parameter type |
Adjusted Ratio | ||||||||||||||||||||||||||||||
Point estimate |
0.98
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.85 | ||||||||||||||||||||||||||||||
upper limit |
1.13 | ||||||||||||||||||||||||||||||
Notes [8] - The upper limit (UL) of the 95% confidence interval (CI) on the geometric mean concentration (GMC) ratios [Boostrix-Prev Group over Boostrix-New Group] for anti-pertactin (anti-PRN) antibodies was ≤ 1.5 (clinical limit for non-inferiority). |
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End point title |
Number of subjects with booster response to diphtheria and tetanus antibodies | |||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
One month after booster vaccination
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No statistical analyses for this end point |
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End point title |
Number of subjects with a booster response to PT, FHA and PRN antibodies. | ||||||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
One month after booster vaccination
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No statistical analyses for this end point |
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End point title |
Number of subjects with any solicited local symptoms | ||||||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Within 4 days (Days 0-3) post vaccination period
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No statistical analyses for this end point |
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End point title |
Number of subjects with any solicited general symptoms | |||||||||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Within 4 days (Days 0-3) post vaccination period
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No statistical analyses for this end point |
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End point title |
Number of subjects with unsolicited adverse events (AEs) | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Within 31 days (Days 0-30) post vaccination period
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No statistical analyses for this end point |
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End point title |
Number of subjects with serious adverse events (SAEs) | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
During the entire study period
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
Solicited symptoms during the 4-day post-vaccination period, Unsolicited AEs during the 31-day post-vaccination period, SAEs during the entire period.
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
16.1
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Reporting groups
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Reporting group title |
Boostrix-New Group
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Boostrix-Prev Group
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Notes [1] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. [2] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. [3] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. [4] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. [5] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. [6] - The number of subjects exposed to this adverse event is less than the total number of subjects exposed for the reporting group. These numbers are expected to be equal. Justification: Solicited local/general symptoms were only tabulated for subjects with the symptom sheet filled-in. |
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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29 May 2012 |
At the European Medicines Agency’s (EMA) request, GSK Biologicals has updated its procedure for emergency unblinding during the conduct of a clinical study.
According to the revised procedure, the responsibility and the decision to break the treatment code in emergency situations resides solely with the investigator and consequently, the investigator will have full authority to break the treatment code.
The Emergency unblinding is not applicable for open and single blind studies anymore. Therefore the section has been deleted.
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |