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Primary Vaccination Study With a Pneumococcal Conjugate Vaccine in Healthy Children 6 to 12wks of Age

Primary Vaccination Course in Children Receiving the Pneumococcal Vaccine GSK 1024850A, Infanrix Hexa and Rotarix

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00489554
Enrollment
230
Registered
2007-06-21
Start date
2007-07-03
Completion date
2008-03-31
Last updated
2020-01-13

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

Conditions

Infections, Streptococcal, Streptococcus Pneumoniae Vaccines

Keywords

Primary vaccination, Safety, Pneumococcal vaccine., Pneumococcal disease, Immunogenicity

Brief summary

The purpose of this study is to assess the immunogenicity in terms of antibody response and the safety/reactogenicity in terms of solicited and unsolicited symptoms and serious adverse events following primary vaccination of Mexican infants with pneumococcal conjugate vaccine GSK 1024850A co-administered with a diphtheria, tetanus, acellular pertussis (DTPa)-combined vaccine (Infanrix hexa) and rotavirus vaccine (Rotarix) in children during the first 6 months of age.

Detailed description

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

Interventions

BIOLOGICALSynflorix

Intramuscular injection, 3 doses.

BIOLOGICALInfanrix hexa

Intramuscular injection, 3 doses.

BIOLOGICALRotarix

Oral, 2 doses.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Weeks to 12 Weeks
Healthy volunteers
Yes

Inclusion criteria

* Male or female subjects between and including 6-12 weeks of age at the time of the first vaccination. * 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. * Born after a gestation period of 36 to 42 weeks inclusive.

Exclusion criteria

* Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period. * Planned administration/administration of a vaccine not foreseen by the study protocol during the period starting one month before each dose of vaccines and ending 7 days after dose 1 and dose 2 and one month after dose 3. * Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product. * Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs since birth. * A family history of congenital or hereditary immunodeficiency. * Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination. * Administration of immunoglobulins and/or any blood products since birth or planned administration during the study period. * Previous vaccination against diphtheria, tetanus, pertussis, polio, hepatitis B, Haemophilus influenzae type b, rotavirus and/or Streptococcus pneumoniae; with the exception of vaccines where the first dose may be given at birth within the first two weeks of life according to national recommendations (e.g. Hepatitis B and BCG). * History of, or intercurrent, diphtheria, tetanus, pertussis, polio, hepatitis B and Haemophilus influenzae type b disease. * Gastroenteritis within 7 days preceding the study vaccine administration (warrants deferral of the vaccination). * Any clinically significant history of chronic gastrointestinal disease including any uncorrected congenital malformation of the gastrointestinal (GI) tract, intussusception (IS) or other medical condition determined to be serious by the investigator. * History of allergic disease or reactions likely to be exacerbated by any component of the vaccines. * History of any neurological disorders or seizures. * Major congenital defects or serious chronic illness. * Acute disease at the time of enrolment.

Design outcomes

Primary

MeasureTime frameDescription
Antibody Concentrations Against Pneumococcal Vaccine SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Concentrations were expressed as geometric mean concentration (GMC). The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.
Antibody Concentrations Against Protein DOne month after the administration of the 3rd vaccine dose i.e. Month 5Concentrations were given as geometric mean concentration (GMC) expressed as enzyme-linked immuno-sorbent assay (ELISA) units per milliliter.

Secondary

MeasureTime frameDescription
Number of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterOne month after the administration of the 3rd vaccine dose i.e. Month 5The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.
Antibody Concentrations Against Pneumococcal Cross-reactive SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Antibody concentrations were expressed as Geometric Mean Concentrations against pneumococcal cross-reactive serotypes 6A and 19A.
Opsonophagocytic Titer Against Pneumococcal Cross-reactive SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5The results were presented as the geometric mean dilution of serum (opsonic titer) able to sustain 50% killing of live pneumococci under the assay conditions. The cross-reactive pneumococcal serotypes assessed include 6A and 19A.
Number of Subjects Seropositive Against Vaccine Pneumococcal SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Seropositivity was defined as anti-pneumococcal antibody concentration greater than or equal to 0.05 microgram per milliliter. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.
Number of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Seropositivity was defined as an opsonic titer greater than or equal to 8. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.
Number of Subjects Seropositive Against Cross-reactive Pneumococcal SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Seropositivity was defined as anti-pneumococcal antibody concentration greater than or equal to 0.05 microgram per milliliter. The cross-reactive pneumococcal serotypes assessed include 6A and 19A.
Number of Subjects Seropositive for Anti-Protein D AntibodiesOne month after the administration of the 3rd vaccine dose i.e. Month 5Seropositivity was defined as antibody concentration greater than or equal to 100 Enzyme-Linked Immuno Sorbent Assay (ELISA) units per milliliter.
Number of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Within 4 days following any vaccine doseGrade 3 redness and swelling was \> 30 millimeter (mm) and grade 3 pain was subjects crying when limb was moved/spontaneously painful. Any was occurrence of any local symptom regardless of grade and whatever the number of injections.
Number of Subjects Reporting Any, Grade 3 and Related Solicited General AEsWithin 4 days following any vaccine doseAny fever was defined as axillary temperature ≥ 37.5 degree centigrade (°C), grade 3 fever was axillary temperature \> 39.5°C. Grade 3 drowsiness, irritability, and loss of appetite was general symptom which prevented normal everyday activities. Grade 3 diarrhea was ≥ 6 looser than normal stools/day and Grade 3 vomiting was ≥ 3 episodes of vomiting/day. Related was solicited general symptom considered by the investigator to have a causal relationship to study vaccination.
Number of Subjects Reporting Any Unsolicited AEsWithin 31 days after any vaccine doseUnsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.
Number of Subjects Reporting Any Serious Adverse Events (SAEs)Up to Month 5SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject.
Number of Subjects Seropositive for Opsonic Titer Against Cross-reactive Pneumococcal SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5Seropositivity was defined as anti-pneumococcal antibody opsonic titer greater than or equal to 8. The vaccine pneumococcal cross-reactive serotypes assessed include 6A and 19A.
Opsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOne month after the administration of the 3rd vaccine dose i.e. Month 5The results were presented as the geometric mean dilution of serum (opsonic titer) able to sustain 50% killing of live pneumococci under the assay conditions. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Countries

Mexico

Participant flow

Participants by arm

ArmCount
Synflorix Vaccine Group
Subjects receiving Synflorix vaccine co-administered with DTPa-HBV-IPV/Hib (Infanrix hexa) vaccine at 2-4-6 months of age, and co-administered with HRV (Rotarix) vaccine at 2-4 months of age.
230
Total230

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event2
Overall StudyLost to Follow-up1
Overall StudyWithdrawal by Subject1

Baseline characteristics

CharacteristicSynflorix Vaccine Group
Age, Continuous8.2 weeks
STANDARD_DEVIATION 1.63
Sex: Female, Male
Female
123 Participants
Sex: Female, Male
Male
107 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
229 / 230
serious
Total, serious adverse events
15 / 230

Outcome results

Primary

Antibody Concentrations Against Pneumococcal Vaccine Serotypes

Concentrations were expressed as geometric mean concentration (GMC). The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-1 antibody (N=219)2.13 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-4 antibody (N=218)3.04 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-5 antibody (N=218)3.24 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-6B antibody (N=218)1.32 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-7F antibody (N=218)3.72 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-9V antibody (N=218)3.71 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-14 antibody (N=218)5.27 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-18C antibody (N=219)6.05 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-19F antibody (N=219)5.49 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Vaccine SerotypesAnti-23F antibody (N=218)2.00 microgram per milliliter
Primary

Antibody Concentrations Against Protein D

Concentrations were given as geometric mean concentration (GMC) expressed as enzyme-linked immuno-sorbent assay (ELISA) units per milliliter.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureValue (GEOMETRIC_MEAN)
Synflorix Vaccine GroupAntibody Concentrations Against Protein D2923.2 ELISA units per milliliter
Secondary

Antibody Concentrations Against Pneumococcal Cross-reactive Serotypes

Antibody concentrations were expressed as Geometric Mean Concentrations against pneumococcal cross-reactive serotypes 6A and 19A.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Cross-reactive SerotypesAnti-6A antibody0.28 microgram per milliliter
Synflorix Vaccine GroupAntibody Concentrations Against Pneumococcal Cross-reactive SerotypesAnti-19A antibody0.26 microgram per milliliter
Secondary

Number of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)

Grade 3 redness and swelling was \> 30 millimeter (mm) and grade 3 pain was subjects crying when limb was moved/spontaneously painful. Any was occurrence of any local symptom regardless of grade and whatever the number of injections.

Time frame: Within 4 days following any vaccine dose

Population: The analysis was performed on Total Vaccinated cohort which included all subjects with the vaccine administration documented.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Any pain196 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Grade 3 pain80 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Any redness91 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Grade 3 redness0 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Any swelling178 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)Grade 3 swelling10 subjects
Secondary

Number of Subjects Reporting Any, Grade 3 and Related Solicited General AEs

Any fever was defined as axillary temperature ≥ 37.5 degree centigrade (°C), grade 3 fever was axillary temperature \> 39.5°C. Grade 3 drowsiness, irritability, and loss of appetite was general symptom which prevented normal everyday activities. Grade 3 diarrhea was ≥ 6 looser than normal stools/day and Grade 3 vomiting was ≥ 3 episodes of vomiting/day. Related was solicited general symptom considered by the investigator to have a causal relationship to study vaccination.

Time frame: Within 4 days following any vaccine dose

Population: The analysis was performed on Total Vaccinated cohort which included all subjects with the vaccine administration documented.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 fever0 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated fever147 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny drowsiness156 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 drowsiness7 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated drowsiness153 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny fever147 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny irritability198 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 irritability21 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated irritability196 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny loss of appetite113 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 loss of appetite1 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated loss of appetite111 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny vomiting56 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 vomiting7 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated vomiting56 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsAny diarrhea55 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsGrade 3 diarrhea5 subjects
Synflorix Vaccine GroupNumber of Subjects Reporting Any, Grade 3 and Related Solicited General AEsRelated diarrhea55 subjects
Secondary

Number of Subjects Reporting Any Serious Adverse Events (SAEs)

SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject.

Time frame: Up to Month 5

Population: The analysis was performed on Total Vaccinated cohort which included all subjects with the vaccine administration documented.

ArmMeasureValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Reporting Any Serious Adverse Events (SAEs)15 subjects
Secondary

Number of Subjects Reporting Any Unsolicited AEs

Unsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.

Time frame: Within 31 days after any vaccine dose

Population: The analysis was performed on Total Vaccinated cohort which included all subjects with the vaccine administration documented.

ArmMeasureValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Reporting Any Unsolicited AEs174 subjects
Secondary

Number of Subjects Seropositive Against Cross-reactive Pneumococcal Serotypes

Seropositivity was defined as anti-pneumococcal antibody concentration greater than or equal to 0.05 microgram per milliliter. The cross-reactive pneumococcal serotypes assessed include 6A and 19A.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Cross-reactive Pneumococcal SerotypesAnti-6A antibody203 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Cross-reactive Pneumococcal SerotypesAnti-19A antibody198 subjects
Secondary

Number of Subjects Seropositive Against Vaccine Pneumococcal Serotypes

Seropositivity was defined as anti-pneumococcal antibody concentration greater than or equal to 0.05 microgram per milliliter. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-1 antibody (N=219)219 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-4 antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-5 antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-6B antibody (N=218)212 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-7F antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-9V antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-14 antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-18C antibody (N=219)218 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-19F antibody (N=219)219 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive Against Vaccine Pneumococcal SerotypesAnti-23F antibody (N=218)212 subjects
Secondary

Number of Subjects Seropositive for Anti-Protein D Antibodies

Seropositivity was defined as antibody concentration greater than or equal to 100 Enzyme-Linked Immuno Sorbent Assay (ELISA) units per milliliter.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Seropositive for Anti-Protein D Antibodies219 subjects
Secondary

Number of Subjects Seropositive for Opsonic Titer Against Cross-reactive Pneumococcal Serotypes

Seropositivity was defined as anti-pneumococcal antibody opsonic titer greater than or equal to 8. The vaccine pneumococcal cross-reactive serotypes assessed include 6A and 19A.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Cross-reactive Pneumococcal SerotypesOpsono-6A titer (N=91)69 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Cross-reactive Pneumococcal SerotypesOpsono-19A titer (N=81)19 subjects
Secondary

Number of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal Serotypes

Seropositivity was defined as an opsonic titer greater than or equal to 8. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-1 titer (N=97)83 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-4 titer (N=97)93 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-5 titer (N=94)93 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-6B titer (N=96)76 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-7F titer (N=96)96 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-9V titer (N=96)96 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-14 titer (N=94)93 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-18C titer (N=94)91 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-19F titer (N=92)90 subjects
Synflorix Vaccine GroupNumber of Subjects Seropositive for Opsonic Titer Against Vaccine Pneumococcal SerotypesOpsono-23F titer (N=95)90 subjects
Secondary

Number of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per Milliliter

The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (NUMBER)
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-19F antibody (N=219)217 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-1 antibody (N=219)219 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-4 antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-5 antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-6B antibody (N=218)203 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-7F antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-9V antibody (N=218)218 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-14 antibody (N=218)216 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-18C antibody (N=219)218 subjects
Synflorix Vaccine GroupNumber of Subjects With Anti-pneumococcal Vaccine Serotypes Antibody Concentrations Greater Than or Equal to 0.2 Microgram Per MilliliterAnti-23F antibody (N=218)207 subjects
Secondary

Opsonophagocytic Titer Against Pneumococcal Cross-reactive Serotypes

The results were presented as the geometric mean dilution of serum (opsonic titer) able to sustain 50% killing of live pneumococci under the assay conditions. The cross-reactive pneumococcal serotypes assessed include 6A and 19A.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Cross-reactive SerotypesOpsono-6A titer (N=91)159.2 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Cross-reactive SerotypesOpsono-19A titer (N=81)11.6 titer
Secondary

Opsonophagocytic Titer Against Pneumococcal Vaccine Serotypes

The results were presented as the geometric mean dilution of serum (opsonic titer) able to sustain 50% killing of live pneumococci under the assay conditions. The vaccine pneumococcal serotypes assessed include 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, and 23F.

Time frame: One month after the administration of the 3rd vaccine dose i.e. Month 5

Population: Analysis was performed on According-to-Protocol (ATP) cohort for immunogenicity which included all evaluable subjects for whom immunogenicity data were available.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-1 titer (N=97)94.1 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-4 titer (N=97)670.8 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-5 titer (N=94)148.8 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-6B titer (N=96)345.4 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-7F titer (N=96)4435.4 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-9V titer (N=96)1186.1 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-14 titer (N=94)1168.3 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-18C titer (N=94)222.9 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-19F titer (N=92)589.2 titer
Synflorix Vaccine GroupOpsonophagocytic Titer Against Pneumococcal Vaccine SerotypesOpsono-23F titer (N=95)1876.3 titer

Source: ClinicalTrials.gov · Data processed: Mar 28, 2026