Trial Outcomes & Findings for Long-term Persistence Study to Assess a Booster Dose of GSK Biologicals' Hib-MenC (NCT NCT00322335)

NCT ID: NCT00322335

Last Updated: 2016-10-20

Results Overview

The cut-off value for the rSBA-MenC titers was equal to or above 1:8. 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

230 participants

Primary outcome timeframe

18, 30, 42, 54 and 66 months after booster dose (day 0)

Results posted on

2016-10-20

Participant Flow

The follow-up timepoints include all subjects who came back for that timepoint. Therefore the amount of subjects who completed the previous timepoint does not correspond with the amount of subjects starting the following time-point per se.

Participant milestones

Participant milestones
Measure
Menitorix/Pediarix Group
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Subjects 18 Months After Booster Dose
STARTED
58
123
3
Subjects 18 Months After Booster Dose
COMPLETED
58
123
3
Subjects 18 Months After Booster Dose
NOT COMPLETED
0
0
0
Subjects 30 Months After Booster Dose
STARTED
54
119
57
Subjects 30 Months After Booster Dose
COMPLETED
54
119
57
Subjects 30 Months After Booster Dose
NOT COMPLETED
0
0
0
Subjects 42 Months After Booster Dose
STARTED
51
113
56
Subjects 42 Months After Booster Dose
COMPLETED
51
113
56
Subjects 42 Months After Booster Dose
NOT COMPLETED
0
0
0
Subjects 54 Months After Booster Dose
STARTED
50
108
56
Subjects 54 Months After Booster Dose
COMPLETED
50
108
56
Subjects 54 Months After Booster Dose
NOT COMPLETED
0
0
0
Subjects 66 Months After Booster Dose
STARTED
48
104
53
Subjects 66 Months After Booster Dose
COMPLETED
48
104
53
Subjects 66 Months After Booster Dose
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Long-term Persistence Study to Assess a Booster Dose of GSK Biologicals' Hib-MenC

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Menitorix/Pediarix Group
n=58 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=123 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=57 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Total
n=238 Participants
Total of all reporting groups
Age, Continuous
31.3 Months
STANDARD_DEVIATION 0.54 • n=5 Participants
31.4 Months
STANDARD_DEVIATION 0.64 • n=7 Participants
31.5 Months
STANDARD_DEVIATION 0.87 • n=5 Participants
31.4 Months
STANDARD_DEVIATION 0.68 • n=4 Participants
Sex: Female, Male
Female
27 Participants
n=5 Participants
55 Participants
n=7 Participants
27 Participants
n=5 Participants
109 Participants
n=4 Participants
Sex: Female, Male
Male
31 Participants
n=5 Participants
68 Participants
n=7 Participants
30 Participants
n=5 Participants
129 Participants
n=4 Participants

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value for the rSBA-MenC titers was equal to or above 1:8. 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=50 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=110 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=52 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:8
Month 42 (N= 50; 110; 52)
39 subjects
106 subjects
33 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:8
Month 54 (N= 49; 106; 51)
38 subjects
103 subjects
33 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:8
Month 66 (N= 46; 101; 46)
38 subjects
95 subjects
28 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:8
Month 18 (N= 45; 96; 0)
44 subjects
93 subjects
0 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:8
Month 30 (N= 48; 101; 45)
39 subjects
96 subjects
31 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value for the rSBA-MenC titers was equal to or above 1:32. 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=50 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=110 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=52 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:32
Month 54 (N= 49; 106; 51)
37 subjects
100 subjects
29 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:32
Month 66 (N= 46; 101; 46)
37 subjects
88 subjects
25 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:32
Month 18 (N= 45; 96; 0)
40 subjects
93 subjects
0 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:32
Month 30 (N= 48; 101; 45)
36 subjects
94 subjects
25 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:32
Month 42 (N= 50; 110; 52)
38 subjects
100 subjects
30 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value for the rSBA-MenC titers was equal to or above 1:128. 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=50 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=110 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=52 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:128
Month 18 (N= 45; 96; 0)
27 subjects
82 subjects
0 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:128
Month 42 (N= 50; 110; 52)
30 subjects
89 subjects
13 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:128
Month 54 (N= 49; 106; 51)
27 subjects
86 subjects
15 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:128
Month 66 (N= 46; 101; 46)
28 subjects
69 subjects
18 subjects
Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titers Equal to or Above Cut-off Value of 1:128
Month 30 (N= 48; 101; 45)
27 subjects
80 subjects
12 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

Titers are expressed as Geometric Mean Titers (GMTs). 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=50 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=110 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=52 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
rSBA-MenC Titers
Month 18 (N= 45; 96; 0)
221.5 titer
Interval 137.2 to 357.7
801.1 titer
Interval 570.3 to 1125.3
0 titer
Interval 0.0 to 0.0
rSBA-MenC Titers
Month 30 (N= 48; 101; 45)
109.1 titer
Interval 61.9 to 192.3
441.7 titer
Interval 309.4 to 630.6
40.3 titer
Interval 21.9 to 74.1
rSBA-MenC Titers
Month 42 (N= 50; 110; 52)
98.9 titer
Interval 56.7 to 172.5
409.8 titer
Interval 297.7 to 564.2
36.1 titer
Interval 20.4 to 63.8
rSBA-MenC Titers
Month 54 (N= 49; 106; 51)
90.4 titer
Interval 52.8 to 154.8
344.6 titer
Interval 255.9 to 463.9
36.7 titer
Interval 21.1 to 64.0
rSBA-MenC Titers
Month 66 (N= 46; 101; 46)
121.5 titer
Interval 71.0 to 207.9
227.6 titer
Interval 160.2 to 323.3
42.7 titer
Interval 22.3 to 81.8

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value was an anti-PRP concentration equal to or above 0.15 µg/mL (microgram per milliliter).

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 0.15 µg/mL (Microgram Per Milliliter)
Month 18 (N= 56; 122; 3)
56 subjects
121 subjects
3 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 0.15 µg/mL (Microgram Per Milliliter)
Month 30 (N= 53; 113; 53)
53 subjects
112 subjects
53 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 0.15 µg/mL (Microgram Per Milliliter)
Month 42 (N= 50; 110; 51)
50 subjects
109 subjects
51 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 0.15 µg/mL (Microgram Per Milliliter)
Month 54 (N= 49; 106; 52)
49 subjects
105 subjects
52 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 0.15 µg/mL (Microgram Per Milliliter)
Month 66 (N= 47; 101; 47)
47 subjects
101 subjects
46 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value was an anti-PRP concentration equal to or above 1.0 µg/mL (microgram per milliliter).

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 1.0 µg/mL (Microgram Per Milliliter)
Month 18 (N= 56; 122; 3)
44 subjects
112 subjects
3 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 1.0 µg/mL (Microgram Per Milliliter)
Month 30 (N= 53; 113; 53)
36 subjects
98 subjects
40 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 1.0 µg/mL (Microgram Per Milliliter)
Month 42 (N= 50; 110; 51)
33 subjects
91 subjects
34 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 1.0 µg/mL (Microgram Per Milliliter)
Month 54 (N= 49; 106; 52)
27 subjects
86 subjects
35 subjects
Number of Subjects With Anti-polyribosylribitol Phosphate (Anti-PRP) Concentrations Equal to or Above Cut-off Value of 1.0 µg/mL (Microgram Per Milliliter)
Month 66 (N= 47; 101; 47)
26 subjects
84 subjects
26 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

Concentrations are expressed as Geometric Mean Concentrations (GMCs) in µg/mL (microgram per milliliter).

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Anti-PRP Concentrations
Month 18 (N= 56; 122; 3)
2.921 µg/mL (microgram per milliliter)
Interval 2.15 to 3.968
5.450 µg/mL (microgram per milliliter)
Interval 4.39 to 6.766
2.547 µg/mL (microgram per milliliter)
Interval 0.39 to 16.651
Anti-PRP Concentrations
Month 30 (N= 53; 113; 53)
1.914 µg/mL (microgram per milliliter)
Interval 1.383 to 2.648
3.524 µg/mL (microgram per milliliter)
Interval 2.813 to 4.415
2.224 µg/mL (microgram per milliliter)
Interval 1.578 to 3.133
Anti-PRP Concentrations
Month 42 (N= 50; 110; 51)
1.735 µg/mL (microgram per milliliter)
Interval 1.243 to 2.423
2.986 µg/mL (microgram per milliliter)
Interval 2.395 to 3.722
2.005 µg/mL (microgram per milliliter)
Interval 1.365 to 2.946
Anti-PRP Concentrations
Month 54 (N= 49; 106; 52)
1.552 µg/mL (microgram per milliliter)
Interval 1.154 to 2.087
2.688 µg/mL (microgram per milliliter)
Interval 2.149 to 3.361
1.799 µg/mL (microgram per milliliter)
Interval 1.267 to 2.555
Anti-PRP Concentrations
Month 66 (N= 47; 101; 47)
1.602 µg/mL (microgram per milliliter)
Interval 1.107 to 2.32
2.625 µg/mL (microgram per milliliter)
Interval 2.113 to 3.261
1.763 µg/mL (microgram per milliliter)
Interval 1.17 to 2.657

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value was an anti-PSC concentration equal to or above 0.3 µg/mL (microgram per milliliter). 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 0.3 µg/mL (Microgram Per Milliliter)
Month 18 (N= 56; 122; 0)
38 subjects
100 subjects
0 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 0.3 µg/mL (Microgram Per Milliliter)
Month 30 (N= 52; 108; 53)
19 subjects
58 subjects
19 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 0.3 µg/mL (Microgram Per Milliliter)
Month 42 (N= 49; 107; 52)
17 subjects
52 subjects
17 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 0.3 µg/mL (Microgram Per Milliliter)
Month 54 (N= 46; 105; 52)
14 subjects
52 subjects
17 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 0.3 µg/mL (Microgram Per Milliliter)
Month 66 (45; 99; 45)
12 subjects
34 subjects
11 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

The cut-off value was an anti-PSC concentration equal to or above 2.0 µg/mL (microgram per milliliter). 0 has been put as an arbitrary value for Month 18 in the Infanrix Hexa/Meningitec Group, as it was not addressed for reasons explained in the participant flow section.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 2.0 µg/mL (Microgram Per Milliliter)
Month 18 (N= 56; 122; 0)
1 subjects
31 subjects
0 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 2.0 µg/mL (Microgram Per Milliliter)
Month 30 (N= 52; 108; 53)
1 subjects
18 subjects
3 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 2.0 µg/mL (Microgram Per Milliliter)
Month 66 (N= 45; 99; 45)
0 subjects
8 subjects
0 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 2.0 µg/mL (Microgram Per Milliliter)
Month 42 (N= 49; 107; 52)
0 subjects
14 subjects
2 subjects
Number of Subjects With Anti-polysaccharide C (Anti-PSC) Concentrations Equal to or Above Cut-off Value of 2.0 µg/mL (Microgram Per Milliliter)
Month 54 (N= 46; 105; 52)
1 subjects
10 subjects
1 subjects

PRIMARY outcome

Timeframe: 18, 30, 42, 54 and 66 months after the booster dose (day 0)

Population: Analysis was performed on the According-to-Protocol Cohort for antibody persistence, which included all subjects with evaluable data at each timepoint and who participated in the primary study (NCT00352963) and booster study (NCT00323050).

Concentrations for anti-PSC antibody were expressed as GMCs.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=56 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=122 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=53 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Anti-PSC Concentrations
Month 18 (N= 56; 122; 0)
0.50 µg/mL (microgram per milliliter)
Interval 0.39 to 0.64
1.01 µg/mL (microgram per milliliter)
Interval 0.8 to 1.29
0 µg/mL (microgram per milliliter)
Interval 0.0 to 0.0
Anti-PSC Concentrations
Month 42 (N= 49; 107; 52)
0.25 µg/mL (microgram per milliliter)
Interval 0.2 to 0.31
0.40 µg/mL (microgram per milliliter)
Interval 0.32 to 0.51
0.28 µg/mL (microgram per milliliter)
Interval 0.21 to 0.37
Anti-PSC Concentrations
Month 54 (N= 46; 105; 52)
0.24 µg/mL (microgram per milliliter)
Interval 0.19 to 0.3
0.36 µg/mL (microgram per milliliter)
Interval 0.29 to 0.45
0.26 µg/mL (microgram per milliliter)
Interval 0.2 to 0.32
Anti-PSC Concentrations
Month 66 (N= 45; 99; 45)
0.22 µg/mL (microgram per milliliter)
Interval 0.18 to 0.27
0.29 µg/mL (microgram per milliliter)
Interval 0.23 to 0.36
0.22 µg/mL (microgram per milliliter)
Interval 0.18 to 0.28
Anti-PSC Concentrations
Month 30 (N= 52; 108; 53)
0.26 µg/mL (microgram per milliliter)
Interval 0.21 to 0.33
0.47 µg/mL (microgram per milliliter)
Interval 0.37 to 0.61
0.30 µg/mL (microgram per milliliter)
Interval 0.23 to 0.39

PRIMARY outcome

Timeframe: From last study contact of the booster study (NCT00323050) to Month 66 after booster dose (day 0)

Population: Analysis was performed on the Total Cohort, which included all vaccinated subjects in the booster study (NC00323050) and who came back during the follow-up.

Serious adverse events 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.

Outcome measures

Outcome measures
Measure
Menitorix/Pediarix Group
n=58 Participants
Subjects were primed with 3 doses of Pediarix™ co-administered intramuscularly with Menitorix™ in the right and left thigh respectively in the primary study (NCT00352963) at 2, 4 and 6 months of age. This was followed by a booster dose of Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group
n=123 Participants
Subjects were either primed in the primary study (NCT00352963) with 3 doses of Infanrix™ hexa administered intramuscularly in the right thigh at 2, 4 and 6 months of age and 2 doses of NeisVac-C™ administered intramuscularly in the left thigh at 2 and 4 months of age or with Engerix-B at birth intramuscularly in the right thigh, Infanrix™ hexa intramusculary in the right thigh at 2 and 6 months of age and NeisVac-C™ intramuscularly in the left thigh at 2 and 4 months of age, Infanrix™ IPV/Hib was administered intramuscularly in the right thigh at 4 months of age. All subjects were boosted with Menitorix™ administered intramuscularly in the left thigh between 13 and 14 months of age in study NCT00323050. No vaccines were administered during this long-term persistence phase of the study.
Infanrix Hexa/Meningitec Group
n=57 Participants
Subjects were primed with Infanrix™ hexa co-administered intramuscularly with Meningitec™ in the right and left thigh respectively at 2, 4 and 6 months of age during the primary study (NCT00352963), followed by a booster dose of Infanrix™ hexa intramuscularly in the right thigh between 13 and 14 months of age in study (NCT00323050). No vaccines were administered during this long-term persistence phase of the study.
Number of Subjects With Serious Adverse Events
0 subjects
0 subjects
0 subjects

Adverse Events

Menitorix/Pediarix Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Infanrix Hexa (or IPV/Hib)/NeisVac-C/Engerix-B/Menitorix Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Infanrix Hexa/Meningitec Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

GSK Response Center

GlaxoSmithKline

Phone: 866-435-7343

Results disclosure agreements

  • Principal investigator is a sponsor employee GSK agreements may vary with individual investigators, but will not prohibit any investigator from publishing. GSK supports the publication of results from all centers of a multi-center trial but requests that reports based on single-site data not precede the primary publication of the entire clinical trial.
  • Publication restrictions are in place

Restriction type: OTHER