Vaccination Course in Primed Children and Age-matched Unprimed Children With Pneumococcal Vaccine GSK1024850A

Phase 3

Completed

Conditions: Infections, Streptococcal

Interventions: Biological: Pneumococcal conjugate vaccine GSK1024850A

Registration Number: NCT00792909

Lead Sponsor: GlaxoSmithKline

Brief Summary: The purpose of this study is to assess the immune memory induced by primary and booster vaccination with pneumococcal conjugate vaccine GSK1024850A in the first year of life through evaluation of the immune responses following vaccination with a booster dose of pneumococcal conjugate vaccine GSK1024850A in the fourth year of life and to assess immune responses following vaccination with a single dose of pneumococcal conjugate vaccine GSK1024850A in age-matched unprimed children.

The study also aims to assess the antibody persistence in the fourth year of life following primary and booster vaccination with pneumococcal conjugate vaccine GSK1024850A in the first year of life.

The study is also designed to evaluate the immunogenicity in terms of antibody response and the safety/reactogenicity in terms of solicited and unsolicited symptoms and serious adverse events following a 2-dose vaccination with pneumococcal conjugate vaccine GSK1024850A in the fourth year of life.

This protocol posting deals with objectives \& outcome measures of the booster phase. The objectives \& outcome measures of the primary phase are presented in a separate protocol posting (NCT number = 00307034)

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 172

Inclusion Criteria

Male or female between, and including, +- 36-46 months of age at the time of vaccination.
For primed subjects: having completed the full vaccination course with GSK1024850A in the primary study (NCT00307034).
Subjects for whom the investigator believes that their parent(s)/guardian(s) can and will comply with the requirements of the protocol.
Written informed consent obtained from the parent(s)/guardian(s) 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 product (drug or vaccine) other than the study vaccines within 30 days preceding the first dose of the study vaccines, or planned use during the study period.
Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within 6 months prior to vaccination.
For primed subjects: administration of any pneumococcal vaccine since the end of the primary study (NCT00307034).
For unprimed subjects: previous vaccination with any pneumococcal vaccine.
Administration of immunoglobulins and/or any blood products less than 6 months prior to the vaccination or planned administration during the study period.
Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination.
History of reactions or allergic disease likely to be exacerbated by any component of the study vaccine.
Acute disease at the time of enrolment.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Synflorix™ Group 1	Pneumococcal conjugate vaccine GSK1024850A	Subjects previously vaccinated with the Synflorix™ vaccine according to a 2+1 schedule, receiving one dose of Synflorix™ at 36-46 months of age.
Synflorix™ Group 2	Pneumococcal conjugate vaccine GSK1024850A	Subjects previously vaccinated with the Synflorix™ vaccine according to a 3+1 schedule, receiving one dose of Synflorix™ at 36-46 months of age.
Unprimed Group	Pneumococcal conjugate vaccine GSK1024850A	Age-matched subjects not previously vaccinated with any pneumococcal vaccine receiving two doses of Synflorix™ at 36-46 and 38-48 months of age. Age-matching was ensured by the enrolment of subjects 36-46 months of age.

Primary Outcome Measures

Name	Time	Method
Antibody Geometric Mean Concentrations (GMCs) Against the Vaccine Pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F in the Unprimed Group	One month after dose 2 (Month 3)	Antibodies assessed were those against the vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C,19F and 23F (ANTI-1, -4, -5, -6B, -7F, -9V, -14, -18C, -19F and -23F) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Antibody Geometric Mean Concentrations (GMCs) Against the Vaccine Pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F in the Synflorix Group 1 and Synflorix Group 2	One week after vaccination at Month 34+7 days (Mth34+D7)	Antibodies assessed were those against the vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C,19F and 23F (ANTI-1, -4, -5, -6B, -7F, -9V, -14, -18C, -19F and -23F) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.

Secondary Outcome Measures

Name	Time	Method
Number of Subjects With B-cells Detection in the Unprimed Group	Pre-vaccination (PRE/ Day 0) and one week after dose 1 (Day 7)	Quantification of memory B-cells that produce antibodies against vaccine pneumococcal serotypes (PS) 6B, 18C, 19F, 23F and C-PS (Elispot assay), prior to, and 7-10 days post-dose 1.
Number of Subjects With Anti-pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F Antibody Concentrations ≥ the Cut-off in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Antibodies assessed for this outcome measure were those against the vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C,19F and 23F (ANTI-1, -4, -5, -6B, -7F, -9V, -14, -18C, -19F and -23F). Antibody concentrations were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.2 μg/mL.
Titers for Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Seropositivity status was defined as opsonophacocytic activity against pneumococcal serotypes ≥ 8.
Antibody Geometric Mean Concentrations (GMCs) Against the Vaccine Pneumococcal Serotypes 6A and 19A in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and 19A (ANTI-6A and 19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Number of Subjects With Anti-pneumococcal Serotypes 6A and 19A Antibody Concentrations ≥ 0.20 μg/mL in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and 19A (ANTI-6A and 19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.20 μg/mL.
Number of Subjects With Anti-pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F Antibody Concentrations ≥ the Cut-off in the Unprimed Group;	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3);	Antibodies assessed were those against the vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C,19F and 23F (ANTI-1, -4, -5, -6B, -7F, -9V, -14, -18C, -19F and -23F) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Number of Subjects With Anti-pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F Antibody Concentrations ≥ the Cut-off in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3);	Antibodies assessed were those against the vaccine pneumococcal serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C,19F and 23F (ANTI-1, -4, -5, -6B, -7F, -9V, -14, -18C, -19F and -23F) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.20 μg/mL.
Titers for Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F and 23F in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	Seropositivity status was defined as opsonophacocytic activity against pneumococcal serotypes ≥ 8.
Number of Subjects With Anti-pneumococcal Serotypes 6A and 19A Antibody Concentrations ≥ the Cut-off in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and 19A (ANTI-6A and 19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Number of Subjects With Anti-pneumococcal Serotypes 6A and 19A Antibody Concentrations ≥ the Cut-off in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and 19A (ANTI-6A and 19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Number of Subjects With Anti-pneumococcal Serotypes 6A and 19A Antibody Concentrations ≥ the Cut-off in the Synflorix™ Group 1 and Synflorix™ Group 2;	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7);	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and 19A (ANTI-6A and 19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.20 μg/mL.
Concentrations of Antibodies Against Protein D (ANTI-PD) in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	ANTI-PD concentrations were expressed as geometric mean concentrations (GMCs), in enzyme-linked immunosorbent assay (ELISA) unit per milliliter (EL.U/mL). Seropositivity status was defined as Anti-PD antibody concentrations ≥ 100 EL.U/mL.
Antibody Geometric Mean Concentrations (GMCs) Against the Vaccine Pneumococcal Serotypes 6A and 19A in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Antibodies assessed were those against the vaccine pneumococcal serotypes 6A and19A (ANTI-6A and19A) and were measured by 22F enzyme-linked immunosorbent assay (ELISA), expressed as geometric mean concentrations (GMCs), in micrograms per milliliter (μg/mL). The seropositivity cut-off of the assay was an antibody concentration ≥ 0.05 μg/mL.
Number of Subjects With B-cells Detection in the Synflorix™ Group 1 and Synflorix™ Group 2	Pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Quantification of memory B-cells that produce antibodies against vaccine pneumococcal serotypes (PS) 6B, 18C, 19F, 23F and C-PS (Elispot assay), prior to and 7-10 days post- additional dose.
Number/ Percentage of Subjects With Any, Grade 3 and Related Solicited General Symptoms	During the 4-day (Days 0-3) post-vaccination period with the Synflorix™ vaccine, following the additional dose in the Synflorix Group 1 and the Synflorix Group 2 and across the 2 doses in the Unprimed Group.	Assessed solicited general symptoms were drowsiness, irritability/ fussiness (Irr./Fuss.), loss of appetite (Loss Appet.) and Fever (rectal temperature ≥ 38.0 °C). Any = occurrence of the specified solicited general symptom, regardless of intensity or relationship to vaccination. Related = occurrence of the specified symptom assessed by the investigators as causally related to vaccination. Grade 3 drowsiness = drowsiness that prevented normal everyday activities. Grade 3 Irr./Fuss. = crying that could not be comforted/ prevented normal everyday activities. Grade 3 loss of appetite = not eating at all. Grade 3 fever = rectal temperature \> 40.0°C.
Titers for Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes 6A and 19A in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	Seropositivity status defined as opsonophacocytic activity against pneumococcal serotypes ≥ 8
Titers for Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes 6A and 19A in the Unprimed Group	Pre-vaccination (PRE/ Day 0), one week after dose 1 (Day 7) and one month after dose 2 (Month 3)	Seropositivity status defined as opsonophacocytic activity against pneumococcal serotypes ≥ 8.
Concentrations of Antibodies Against Protein D (ANTI-PD) in the Synflorix™ Group 1 and Synflorix™ Group 2	1 month after booster dose (Month 10) - in primary study (105539), pre-additional dose at Month 34 in the current study (Month 34) and one week after vaccination at Month 34+7 days (Mth34+D7)	ANTI-PD concentrations were expressed as geometric mean concentrations (GMCs), in enzyme-linked immunosorbent assay (ELISA) unit per milliliter (EL.U/mL). Seropositivity status was defined as Anti-PD antibody concentrations ≥ 100 EL.U/mL.
Number of Subjects With Any and Grade 3 Solicited Local Symptoms	During the 4-day (Days 0-3) post-vaccination period with the Synflorix™ vaccine, following the additional dose in the Synflorix Group1 and the Synflorix Group2 and across the 2 doses in the Unprimed Group	Assessed local symptoms were pain, redness and swelling. Any = occurrence of the specified solicited local symptom, regardless of intensity. Grade 3 Pain = crying when limb was moved/ spontaneously painful. Grade 3 Redness/ Swelling = Redness/ swelling at injection site greater than (\>) 30 millimeters (mm).
Number (%) of Subjects With Unsolicited Adverse Events	Within the 31-day (Days 0-30) period post vaccination, with the Synflorix™ vaccine, following the additional dose in the Synflorix group1 and the Synflorix Group 2 and across the 2 doses in the Unprimed Group	An unsolicited AE was defined as 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. Any = occurrence of an unsolicited AE, regardless of intensity or relationship to vaccination.
Number (%) of Subjects With Serious Adverse Events	During the 31-day period following vaccination period	A serious adverse event (SAE) was defined as any medical occurrence that resulted in death, was life-threatening, required hospitalization or prolongation of hospitalization, resulted in disability/incapacity in a subject. AE(s) considered as SAE(s) also included invasive or malignant cancers, intensive treatment in an emergency room or at home for allergic bronchospasm, blood dyscrasias or convulsions that did not result in hospitalisation, as per the medical or scientific judgement of the physician. Any = occurrence of a SAE, regardless of relationship to vaccination.