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Trial · NCT00385255

Immunogenicity, Safety of GSKs Tdap Vaccine Boostrix When Coadministered With GSKs Influenza Vaccine Fluarix in Adults

NCT00385255, Phase 3, Completed, GlaxoSmithKline; results first posted 2018-09-17

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Immunogenicity, Safety of GSKs Tdap Vaccine Boostrix When Coadministered With GSKs Influenza Vaccine Fluarix in Adults. Trials, record NCT00385255. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT00385255

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Immunogenicity, Safety of GSKs Tdap Vaccine Boostrix When Coadministered With GSKs Influenza Vaccine Fluarix in Adults
NCT number
NCT00385255
Status
Completed
Phases
Phase 3
Enrollment
1,726 participants, actual
Lead sponsor
GlaxoSmithKline
Conditions
Acellular Pertussis, Diphtheria, Tetanus
Interventions
Fluarix®, Boostrix®
First posted
2006-10-09
Last updated
2019-06-10
Results first posted
2018-09-17

Source ClinicalTrials.gov

Registered outcomes15

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryNumber of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensAt Month 1 post-Boostrix® vaccinationA seroprotected subject was defined as a vaccinated subject with anti-D and anti-T antibody concentrations equal to or above (≥) 0.1 International Units per milliliter (IU/mL), respectively.
PrimaryNumber of Subjects With Anti-T Antibody Concentrations ≥ the Assay Cut-off ValueAt Month 1 post-Boostrix® vaccinationThe assay cut-off value was ≥ 1.0 IU/mL, as assessed by enzyme-linked immunosorbent assay (ELISA).
PrimaryAntibody Concentrations Against Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN) AntigensAt Month 1 post-Boostrix® vaccinationAnti-PT, anti-FHA and anti-PRN antibody concentrations are presented as geometric mean concentrations (GMCs), expressed in ELISA units per milliliter (EL.U/mL).
PrimaryNumber of Subjects With Serum Haemagglutinin Inhibition (HI) Titers Against 3 Strains of InfluenzaAt Month 1 post-Fluarix® vaccinationThe antibody titer cut-off value for the 3 influenza strains assessed (H1N1, H3N2 and B) was ≥ 1:40.
PrimaryNumber of Seroconverted Subjects Against Influenza Antigens H1N1, H3N2, and BAt Month 1 post-Fluarix® vaccination
Seroconversion for HI antibodies is defined as: For initially seronegative subjects: post-vaccination antibody titer ≥ 1:40 at Month 1 post-Boostrix® vaccination; For initially seropositive subjects: antibody titer at Month 1≥ 4 fold the pre-vaccination antibody titer.
SecondaryNumber of Seropositive Subjects With Anti-D Antibody Concentrations Above the Cut-off ValueAt Month 1 post-Boostrix® vaccinationA seropositive subject was a subject whose antibody concentration was greater than or equal (≥) to the cut-off value of 1.0 IU/mL.
SecondaryAntibody Concentrations for Diphteria Toxoid (D) and Tetanus Toxoid (T)At Day 0 and Month 1 post-Boostrix® vaccinationAnti-D and anti-T antibody concentrations are presented as geometric mean concentrations (GMCs), expressed in International Units per milliliter (IU/mL).
SecondaryAntibody Concentrations for Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN)At Day 0 and Month 1 post-Boostrix® vaccinationAnti-PT, anti-FHA and anti-PRN antibody concentrations are presented as geometric mean concentrations (GMCs), expressed in ELISA units per milliliter (EL.U/mL).
SecondaryNumber of Subjects With Booster Response Against Diphteria Toxoid (D) and Tetanus Toxoid (T) AntigensAt Month 1 post-Boostrix® vaccination
Booster responses for anti-D and anti-T antibodies are defined as: For initially seronegative subjects \[pre-vaccination concentration below (\<) cut-off 0.1 IU/mL\]: antibody concentrations at least four times the assay cut-off (post-vaccination concentration ≥ 0.4 IU/mL), one month after vaccination with Boostrix®; For initially seropositive subjects (pre-vaccination concentration ≥ 0.1 IU/mL): an increase in antibody concentrations of at least four times the pre-vaccination concentration, one month after vaccination with Boostrix®.
SecondaryNumber of Subjects With Booster Response Against Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN) AntigensAt Month 1 post-Boostrix® vaccination
Booster responses for anti-PT, anti-FHA and anti-PRN are defined as: For initially seronegative subjects (pre-vaccination concentration \< cut-off of 5 EL.U/mL): antibody concentrations at least four times the cut-off (post-vaccination concentration ≥ 20 EL.U/mL), one month after vaccination with Boostrix®; For initially seropositive subjects with pre-vaccination concentration ≥ 5 EL.U/mL and \< 20 EL.U/mL: an increase in antibody concentrations of at least four times the pre-vaccination concentration one month after vaccination with Boostrix®; For initially seropositive subjects with pre-vaccination concentration ≥ 20 EL.U/mL: an increase in antibody concentrations of at least two times the pre-vaccination concentration one month after vaccination with Boostrix®.

Outcomes15

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYNumber of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the According-to-Protocol (ATP) cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYNumber of Subjects With Anti-T Antibody Concentrations ≥ the Assay Cut-off ValueAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYAntibody Concentrations Against Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN) AntigensAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.EL.U/mLGEOMETRIC_MEAN
PRIMARYNumber of Subjects With Serum Haemagglutinin Inhibition (HI) Titers Against 3 Strains of InfluenzaAt Month 1 post-Fluarix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYNumber of Seroconverted Subjects Against Influenza Antigens H1N1, H3N2, and BAt Month 1 post-Fluarix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNumber of Seropositive Subjects With Anti-D Antibody Concentrations Above the Cut-off ValueAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYAntibody Concentrations for Diphteria Toxoid (D) and Tetanus Toxoid (T)At Day 0 and Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.IU/mLGEOMETRIC_MEAN
SECONDARYAntibody Concentrations for Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN)At Day 0 and Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.EL.U/mLGEOMETRIC_MEAN
SECONDARYNumber of Subjects With Booster Response Against Diphteria Toxoid (D) and Tetanus Toxoid (T) AntigensAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNumber of Subjects With Booster Response Against Pertussis Toxoid (PT), Filamentous Hemagglutinin (FHA) and Pertactin (PRN) AntigensAt Month 1 post-Boostrix® vaccinationThe analysis was performed on the ATP cohort for immunogenicity, which included all evaluable subjects for whom data concerning immunogenicity measures were available.ParticipantsCOUNT_OF_PARTICIPANTS

Results by group456

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensBoostrix+Fluarix 19-64 YOA GroupAnti-D677Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensFluarix Boostrix 19-64 YOA GroupAnti-D614Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensBoostrix+Fluarix ≥ 65 YOA GroupAnti-D93Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensFluarix Boostrix ≥ 65 YOA GroupAnti-D79Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensBoostrix+Fluarix 19-64 YOA GroupAnti-T700Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensFluarix Boostrix 19-64 YOA GroupAnti-T653Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensBoostrix+Fluarix ≥ 65 YOA GroupAnti-T105Participants
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Toxoid AntigensFluarix Boostrix ≥ 65 YOA GroupAnti-T95Participants
Number of Subjects With Anti-T Antibody Concentrations ≥ the Assay Cut-off ValueBoostrix+Fluarix 19-64 YOA Group687Participants
Number of Subjects With Anti-T Antibody Concentrations ≥ the Assay Cut-off ValueFluarix Boostrix 19-64 YOA Group621Participants

Participant flow10

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDBoostrix+Fluarix Group860
Overall StudySTARTEDFluarix Boostrix Group858
Overall Study≥ 65 Years of Age (YOA) CohortBoostrix+Fluarix Group112
Overall Study≥ 65 Years of Age (YOA) CohortFluarix Boostrix Group109
Overall Study19-64 Years of Age (YOA) CohortBoostrix+Fluarix Group748
Overall Study19-64 Years of Age (YOA) CohortFluarix Boostrix Group749
Overall StudyCOMPLETEDBoostrix+Fluarix Group839
Overall StudyCOMPLETEDFluarix Boostrix Group785
Overall StudyNOT COMPLETEDBoostrix+Fluarix Group21
Overall StudyNOT COMPLETEDFluarix Boostrix Group73

Adverse events48

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherArthralgiaMusculoskeletal and connective tissue disordersBoostrix+Fluarix Group151860152
otherArthralgiaMusculoskeletal and connective tissue disordersFluarix Boostrix Group156858186
otherChillsGeneral disordersBoostrix+Fluarix Group7686076
otherChillsGeneral disordersFluarix Boostrix Group8685899
otherErythemaSkin and subcutaneous tissue disordersBoostrix+Fluarix Group203860203
otherErythemaSkin and subcutaneous tissue disordersFluarix Boostrix Group227858303
otherFatigueGeneral disordersBoostrix+Fluarix Group240860240
otherFatigueGeneral disordersFluarix Boostrix Group240858306
otherGastrointestinal disorderGastrointestinal disordersBoostrix+Fluarix Group139860139
otherGastrointestinal disorderGastrointestinal disordersFluarix Boostrix Group145858171

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityBoostrix+Fluarix Group0860
Total, all-cause mortalityFluarix Boostrix Group0858
Total, other adverse eventsBoostrix+Fluarix Group640860
Total, other adverse eventsFluarix Boostrix Group619858
Total, serious adverse eventsBoostrix+Fluarix Group3860
Total, serious adverse eventsFluarix Boostrix Group7858

Papers2

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
19838080BACKGROUNDPubMed
22212127BACKGROUNDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons2

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
Boostrix+Fluarix Group vs Fluarix Boostrix Group: deaths from any causeTrial comparisons
Boostrix+Fluarix Group vs Fluarix Boostrix Group: serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT00385255

GET https://conductscience.org/api/trials/v1/NCT00385255/results?page=2