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Assess Reacto- and Immunogenicity of Pneumococcal Conjugate Vaccine When Given as Booster or a 2 Dose Catch up Schedule

Phase II, Observer-blind Follow-up Study to Assess reacto-and Immunogenicity of GSK Biologicals' Pneumococcal Conjugate Vaccine (GSK1024850A), When Given as Booster in Primed Children or as 2-dose Catch-up in Unprimed Children.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00513409
Enrollment
163
Registered
2007-08-08
Start date
2007-08-22
Completion date
2008-08-28
Last updated
2018-12-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infections, Streptococcal

Keywords

Immunogenicity, Pneumococcal disease, Safety, Booster vaccination, Pneumococcal vaccine

Brief summary

This is a booster study in 2 groups of healthy children less than 3 years old to measure the reactogenicity, safety and immunogenicity of GSK Biologicals' pneumococcal conjugate vaccine, when given as a booster or as a two-dose catch-up vaccination. This protocol posting deals with objectives and outcome measures of the booster phase. The objectives and outcome measures of the primary phase are presented in a separate protocol posting (NCT number = NCT00338351).

Detailed description

The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Interventions

BIOLOGICALSynflorix

Intramuscular injection, 1 or 2 doses

BIOLOGICALInfanrix Hexa

1 Intramuscular injection

BIOLOGICALHavrix

1 Intramuscular injection

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Months to 21 Months
Healthy volunteers
Yes

Inclusion criteria

* Male or female between, and including, 18-21 months of age at the time of vaccination. * Subjects who previously participated in the primary study and received 3 doses of study or control vaccines during the primary study. * Subjects for whom the investigator believes that their parents/guardians can and will comply with the requirements of the protocol. * Written informed consent obtained from the parent or guardian of the subject. * Free of obvious health problems as established by medical history and clinical examination before entering into the study.

Exclusion criteria

* Use of any investigational or non-registered drug or vaccine other than the study vaccine(s) within 30 days preceding the booster doses of study vaccines, or planned use during the study period (active phase and extended safety follow-up). * Planned administration/ administration of a vaccine not foreseen by the study protocol during the period starting one month (30 days) before the booster doses of vaccine(s) and during the active phase of the study (up to the follow-up visit (Visit 3)). * History of allergic disease or reactions likely to be exacerbated by any component of the vaccines. * History of seizures (subjects who have had a single, uncomplicated febrile convulsion in the past can be included) or progressive neurological disease. * Acute disease at the time of enrolment. * Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within 6 months prior to the booster doses of study vaccines. * Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination. * A family history of congenital or hereditary immunodeficiency. * Major congenital defects or serious chronic illness. * Administration of immunoglobulins and/or any blood products within the last 3 months prior to booster or follow-up vaccination or planned administration during the active phase of the study.

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)Within 4 days after the administration of any study vaccine doseGrade 3 symptoms are symptoms which prevent normal, everyday activities (e.g. in a young child such symptom would prevent attendance at school/ kindergarten/ a day-care center and would cause the parents/guardians to seek medical advice).

Secondary

MeasureTime frameDescription
Number of Subjects Reporting Solicited General SymptomsWithin 4 days after the administration of any study vaccine doseSolicited general symptoms assessed include drowsiness, fever, irritability and loss of appetite. Fever was defined as rectal temperature ≥ 38 degrees Celsius.
Number of Subjects Reporting Unsolicited Adverse EventsWithin 31 days after the administration of any study vaccine doseAn Adverse Event is any untoward medical occurrence in a clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.
Number of Subjects Reporting Serious Adverse Events During the Active Phase of the StudyThroughout the active phase of the study ( from the beginning of the booster phase up to 1 month after the second booster dose)A serious adverse event (SAE) is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above.
Number of Subjects Reporting Serious Adverse Events Throughout the Entire Study PeriodThroughout the entire study period (from the beginning of the booster phase up to the end of the 6-month extended safety follow-up)An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above.
Number of Subjects Reporting Solicited Local SymptomsWithin 4 days after the administration of any study vaccine doseSolicited local symptoms assessed include pain, redness and swelling.
Number of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueBefore (pre) and one month after (post) the administration of Dose 2Cut-off value for opsonophagocytic activity against pneumococcal antibody assessed was ≥ 8 The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F.
Number of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off ValueBefore (pre) and one month after (post) the administration of Dose 2Anti-protein D antibody cut-off value assessed was ≥ 100 Enzyme-Linked Immuno Sorbent Assay (ELISA) unit per milliliter (EL.U/mL).
Anti-hepatitis A Virus Antibodies ConcentrationBefore (pre) and one month after (post) the administration of Dose 2Concentration of anti-hepatitis A antibodies given as geometric mean concentration (GMC) in milli-international units per milliliter (mIU/mL).
Number of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off ValueBefore (pre) and one month after (post) the administration of Dose 2Anti-hepatitis A antibodies cut-off value assessed was ≥ 15 mIU/mL.
Number of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueBefore (pre) and one month after (post) the administration of Dose 2Anti-pneumococcal antibody cut-off value assessed was 0.20 microgram per milliliter (μg/mL). The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F.

Countries

Chile

Participant flow

Participants by arm

ArmCount
Synflorix Booster Group
Subjects previously primed with Synflorix™ and receiving in the current study Havrix™ co-administered with Infanrix™ hexa (Dose 1) and Synflorix™ (Dose 2).
84
Synflorix Catch-up Group
Subjects previously primed with Havrix™ co-administered with Infanrix™ hexa and receiving in the current study Synflorix™ co-administered with Infanrix™ hexa (Dose 1) and Synflorix™ (Dose 2).
79
Total163

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event01
Overall StudyLost to Follow-up01
Overall StudyPhysician Decision10
Overall StudyVisit 3 not done12
Overall StudyWithdrawal by Subject02

Baseline characteristics

CharacteristicSynflorix Booster GroupSynflorix Catch-up GroupTotal
Age, Continuous18.3 Months
STANDARD_DEVIATION 0.44
18.3 Months
STANDARD_DEVIATION 0.5
18.3 Months
STANDARD_DEVIATION 0.47
Sex: Female, Male
Female
39 Participants44 Participants83 Participants
Sex: Female, Male
Male
45 Participants35 Participants80 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
78 / 8475 / 79
serious
Total, serious adverse events
1 / 840 / 79

Outcome results

Primary

Number of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)

Grade 3 symptoms are symptoms which prevent normal, everyday activities (e.g. in a young child such symptom would prevent attendance at school/ kindergarten/ a day-care center and would cause the parents/guardians to seek medical advice).

Time frame: Within 4 days after the administration of any study vaccine dose

Population: Analysis was performed on all subjects included in the Total Vaccinated Cohort, who returned the symptom sheet.

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)General symptoms6 subjects
Synflorix Booster GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)Any symptoms32 subjects
Synflorix Booster GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)Local symptoms30 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)General symptoms14 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)Any symptoms36 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited)Local symptoms32 subjects
Secondary

Anti-hepatitis A Virus Antibodies Concentration

Concentration of anti-hepatitis A antibodies given as geometric mean concentration (GMC) in milli-international units per milliliter (mIU/mL).

Time frame: Before (pre) and one month after (post) the administration of Dose 2

Population: Analysis was performed on the ATP cohort for analysis of immunogenicity,on subjects with available results

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Synflorix Booster GroupAnti-hepatitis A Virus Antibodies ConcentrationPre (N=18; 21)30.3 mIU/mL
Synflorix Booster GroupAnti-hepatitis A Virus Antibodies ConcentrationPost (N=19; 19)495.5 mIU/mL
Synflorix Catch-up GroupAnti-hepatitis A Virus Antibodies ConcentrationPre (N=18; 21)539.9 mIU/mL
Synflorix Catch-up GroupAnti-hepatitis A Virus Antibodies ConcentrationPost (N=19; 19)478.5 mIU/mL
Secondary

Number of Subjects Reporting Serious Adverse Events During the Active Phase of the Study

A serious adverse event (SAE) is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above.

Time frame: Throughout the active phase of the study ( from the beginning of the booster phase up to 1 month after the second booster dose)

ArmMeasureValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Serious Adverse Events During the Active Phase of the Study1 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Serious Adverse Events During the Active Phase of the Study0 subjects
Secondary

Number of Subjects Reporting Serious Adverse Events Throughout the Entire Study Period

An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above.

Time frame: Throughout the entire study period (from the beginning of the booster phase up to the end of the 6-month extended safety follow-up)

ArmMeasureValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Serious Adverse Events Throughout the Entire Study Period1 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Serious Adverse Events Throughout the Entire Study Period0 subjects
Secondary

Number of Subjects Reporting Solicited General Symptoms

Solicited general symptoms assessed include drowsiness, fever, irritability and loss of appetite. Fever was defined as rectal temperature ≥ 38 degrees Celsius.

Time frame: Within 4 days after the administration of any study vaccine dose

Population: Analysis was performed on all subjects included in the Total Vaccinated Cohort, who returned the symptom sheet.

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Solicited General SymptomsIrritability56 subjects
Synflorix Booster GroupNumber of Subjects Reporting Solicited General SymptomsDrowsiness33 subjects
Synflorix Booster GroupNumber of Subjects Reporting Solicited General SymptomsLoss of appetite35 subjects
Synflorix Booster GroupNumber of Subjects Reporting Solicited General SymptomsFever30 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited General SymptomsLoss of appetite37 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited General SymptomsDrowsiness36 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited General SymptomsIrritability55 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited General SymptomsFever40 subjects
Secondary

Number of Subjects Reporting Solicited Local Symptoms

Solicited local symptoms assessed include pain, redness and swelling.

Time frame: Within 4 days after the administration of any study vaccine dose

Population: Analysis was performed on all subjects included in the Total Vaccinated Cohort, who returned the symptom sheet.

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Solicited Local SymptomsPain57 subjects
Synflorix Booster GroupNumber of Subjects Reporting Solicited Local SymptomsRedness49 subjects
Synflorix Booster GroupNumber of Subjects Reporting Solicited Local SymptomsSwelling44 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited Local SymptomsPain63 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited Local SymptomsRedness52 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Solicited Local SymptomsSwelling47 subjects
Secondary

Number of Subjects Reporting Unsolicited Adverse Events

An Adverse Event is any untoward medical occurrence in a clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.

Time frame: Within 31 days after the administration of any study vaccine dose

ArmMeasureValue (NUMBER)
Synflorix Booster GroupNumber of Subjects Reporting Unsolicited Adverse Events47 subjects
Synflorix Catch-up GroupNumber of Subjects Reporting Unsolicited Adverse Events47 subjects
Secondary

Number of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off Value

Anti-hepatitis A antibodies cut-off value assessed was ≥ 15 mIU/mL.

Time frame: Before (pre) and one month after (post) the administration of Dose 2

Population: Analysis was performed on the ATP cohort for analysis of immunogenicity, on subjects with available results.

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off ValuePost (N=19; 19)18 subjects
Synflorix Booster GroupNumber of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off ValuePre (N=18; 21)12 subjects
Synflorix Catch-up GroupNumber of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off ValuePost (N=19; 19)19 subjects
Synflorix Catch-up GroupNumber of Subjects With Anti-hepatitis A Antibody Concentrations Above the Cut-off ValuePre (N=18; 21)21 subjects
Secondary

Number of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off Value

Anti-protein D antibody cut-off value assessed was ≥ 100 Enzyme-Linked Immuno Sorbent Assay (ELISA) unit per milliliter (EL.U/mL).

Time frame: Before (pre) and one month after (post) the administration of Dose 2

Population: Analysis was performed on the ATP cohort for analysis of immunogenicity,on subjects with available results

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off ValuePre (N= 73; 69)72 subjects
Synflorix Booster GroupNumber of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off ValuePost (N= 77; 70)77 subjects
Synflorix Catch-up GroupNumber of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off ValuePre (N= 73; 69)44 subjects
Synflorix Catch-up GroupNumber of Subjects With Anti-protein D Antibody Concentrations Above the Cut-off ValuePost (N= 77; 70)70 subjects
Secondary

Number of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off Value

Cut-off value for opsonophagocytic activity against pneumococcal antibody assessed was ≥ 8 The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F.

Time frame: Before (pre) and one month after (post) the administration of Dose 2

Population: Analysis was performed on the ATP cohort for analysis of immunogenicity,on subjects with available results

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6B Pre (N=22; 25)12 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-18C Post (N=26; 27)25 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6B Post (N=24; 27)22 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-4 Post (N=24; 18)24 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-9V Pre (N=20; 17)20 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-1 Pre (N=28; 25)12 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-9V Post (N=23; 23)23 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-5 Pre (N=19; 23)13 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-14 Pre (N=16; 11)14 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-7F Pre (N=17; 12)16 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-14 Post (N=21; 25)21 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-5 Post (N=20; 25)20 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-18C Pre (N=29; 28)12 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-1 Post (N=25; 25)25 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19A Pre (N=18; 18)0 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19A Post (N=23; 19)14 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6A Pre (N=20; 25)12 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19F Pre (N=22; 23)17 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19F Post (N=20; 21)20 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-7F Post (N=25; 26)25 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-23F Pre (N=21; 16)18 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6A Post (N=19; 19)14 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-23F Post (N=25; 25)25 subjects
Synflorix Booster GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-4 Pre (N=17; 19)7 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-23F Post (N=25; 25)25 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-7F Pre (N=17; 12)4 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-18C Post (N=26; 27)27 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19A Pre (N=18; 18)0 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19F Pre (N=22; 23)2 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-1 Pre (N=28; 25)1 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-1 Post (N=25; 25)13 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-4 Pre (N=17; 19)1 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-4 Post (N=24; 18)18 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-5 Pre (N=19; 23)1 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-5 Post (N=20; 25)21 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6A Pre (N=20; 25)2 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6A Post (N=19; 19)12 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6B Pre (N=22; 25)3 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-7F Post (N=25; 26)26 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-9V Pre (N=20; 17)11 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-9V Post (N=23; 23)22 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-14 Pre (N=16; 11)5 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-14 Post (N=21; 25)25 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-18C Pre (N=29; 28)3 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19A Post (N=23; 19)5 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-19F Post (N=20; 21)20 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-23F Pre (N=21; 16)8 subjects
Synflorix Catch-up GroupNumber of Subjects With Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes Above the Cut-off ValueOpsono-6B Post (N=24; 27)13 subjects
Secondary

Number of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off Value

Anti-pneumococcal antibody cut-off value assessed was 0.20 microgram per milliliter (μg/mL). The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F.

Time frame: Before (pre) and one month after (post) the administration of Dose 2

Population: Analysis was performed on the According-to-Protocol (ATP) cohort for analysis of immunogenicity, on subjects with available results

ArmMeasureGroupValue (NUMBER)
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-23F Pre (N=76; 71)59 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-4 Pre (N=75; 73)45 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-4 Post (N=77; 70)77 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-5 Pre (N=76; 70)58 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19A Post (N=78; 70)78 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19F Pre (N=80; 72)76 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19F Post (N=78; 70)78 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-1 Post (N=78; 70)78 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-1 Pre (N=79; 72)43 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-5 Post (N=78; 70)77 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6A Pre (N=76; 72)66 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6A Post (N=77; 70)71 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6B Pre (N=76; 73)55 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6B Post (N=78; 70)76 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-7F Pre (N=70; 68)60 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-7F Post (N=78; 70)77 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-9V Pre (N=78; 72)71 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-9V Post (N=79; 70)79 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-14 Pre (N=76; 71)69 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-14 Post (N=79; 70)79 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-18C Pre (N=77; 73)68 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-18C Post (N=78; 70)78 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19A Pre (N=78; 73)72 subjects
Synflorix Booster GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-23F Post (N=78; 70)78 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-14 Post (N=79; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-1 Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6B Post (N=78; 70)59 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-4 Pre (N=75; 73)3 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19A Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-4 Post (N=77; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-7F Pre (N=70; 68)8 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6A Post (N=77; 70)64 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-18C Pre (N=77; 73)5 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-7F Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19F Pre (N=80; 72)19 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19F Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-9V Pre (N=78; 72)6 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-23F Post (N=78; 70)66 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-18C Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-1 Pre (N=79; 72)1 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-5 Pre (N=76; 70)7 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-9V Post (N=79; 70)69 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-5 Post (N=78; 70)70 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-23F Pre (N=76; 71)3 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6A Pre (N=76; 72)36 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-14 Pre (N=76; 71)20 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-19A Pre (N=78; 73)50 subjects
Synflorix Catch-up GroupNumber of Subjects With Vaccine Pneumococcal Serotype Antibody Concentrations Above the Cut-off ValueAnti-6B Pre (N=76; 73)1 subjects

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026