The proposed study V72P6E1 is an Extension Study of V72P6 (NCT00381615). The objectives of this extension study will be to explore antibody persistence at approximately 40 months of age and to evaluate the safety, tolerability and immunogenicity of booster doses of rMenB±OMV NZ administered to subjects at approximately 40 months of age. Antibody persistence will be subsequently measured at 18-20 months after these booster doses when the subjects are 60 months of age. Two groups of naïve subjects, aged approximately 40 and 60 months, will be recruited in the study to serve as a baseline comparator for assessing antibody persistence at these ages. These subjects will receive a two-dose catch-up regimen with rMenB+OMV NZ. Subjects who are enrolled at 40 months of age are offered DTaP/IPV and MMR vaccinations, if they have not already received these vaccines prior to enrollment.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
163
Subjects received either one or two booster doses of the same vaccine they had received in the parent trial (rMenB+OMV NZ) or two catch-up doses.
Subjects received either one or two booster doses of the same vaccine they had received in the parent trial (rMenB).
Oxford Vaccine Group, Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital
Oxford, United Kingdom
Persistence of Geometric Mean Antibody Titers in Children (Who Previously Received 4 Doses of Men B Vaccine), at 40 Months of Age.
Persistence of geometric mean titers (GMTs) against N.meningitidis B strains in children (at 40 months of age) who had previously received four doses of either rMenB or rMen+OMV NZ vaccines in parent study, are compared with the GMTs in vaccine-naïve children.
Time frame: 28 months after last vaccination; Baseline for Naïve
Percentage of Subjects (Who Previously Received 4 Doses of Men B Vaccine) With Persisting Human Complement Serum Bactericidal Antibody Titers ≥ 1:4 and ≥1:8 at 40 Months of Age.
The percentages of subjects with persisting human serum bactericidal antibodies (hSBA) titers ≥ 1:4 and ≥ 1:8, against N.meningitidis B strains at 40 months of age; who had previously received four doses of either rMenB or rMen+OMV NZ vaccines in parent study are reported. The serum bactericidal antibodies directed against serogroup B meningococci, are measured by human complement Serum Bactericidal Assay (hSBA).
Time frame: 28 months after last vaccination; baseline for naïve
Number of Subjects Reporting Solicited Adverse Events After a Receiving One or Two Booster Doses of rMen B or rMenB+OMV NZ Vaccine at 40 Months of Age.
The safety and tolerability of one or two booster doses of rMen B or rMenB+OMV NZ vaccine administered at 40 months of age in children who had previously received one or four doses of the same vaccine as infants in parent study is assessed in terms of number of subjects with solicited local and systemic reactions following vaccination.
Time frame: Day 1-7 after booster vaccination
Persistence of Geometric Mean Antibody Titers in Children (Who Previously Received One Dose of Men B Vaccine), at 40 Months of Age.
Persisting GMTs against N.meningitidis B strains in children (at 40 months of age) who had previously received one dose of either rMenB or rMen+OMV NZ vaccines in parent study, are compared with the GMTs in vaccine-naïve children.
Time frame: 28 months after vaccination; Baseline for Naïve
Percentage of Subjects (Who Had Previously Received One Dose of Men B Vaccine) With Persisting Serum Bactericidal Antibody Titers ≥ 1:4 and ≥1:8, at 40 Months of Age.
The percentages of subjects with persisting hSBA titers ≥ 1:4 and ≥1:8, against N.meningitidis B strains at 40 months of age; who had previously received one dose of either rMenB or rMen+OMV NZ vaccines in parent study are reported.
Time frame: 28 months after vaccination; baseline for naïve
Geometric Mean Antibody Titers in Children (Who Previously Received 4 Doses of Men B Vaccine), After Receiving a Booster Dose of rMenB or rMenB+OMV NZ Vaccine at 40 Months of Age.
The GMTs against N.meningitidis B strains in children (who had previously received four doses MenB vaccine in parent study) after a single booster dose of rMenB or rMenB+OMV NZ vaccine given at 40 months of age, are compared with the antibody titers following one catch-up dose rMenB+OMV NZ vaccine given at 40 months to vaccine-naive subjects.
Time frame: 1 month post- booster/ dose 1 for Naïve
Percentage of Subjects (Who Previously Received 4 Doses of Men B Vaccine) With Serum Bactericidal Antibody Titers ≥ 1:4 and ≥1:8 After Receiving a Booster Dose of Either rMenB or rMenB+OMV NZ Vaccine at 40 Months of Age.
The percentages of subjects (who had previously received four doses MenB vaccine in parent study) with hSBA titers ≥ 1:4 and ≥ 1:8, against N.meningitidis B strains after receiving a single booster dose of either rMenB or rMen+OMV NZ vaccines at 40 months of age are compared with hSBA responses following one catch-up dose of rMenB+OMV NZ vaccine given at 40 months in vaccine-naive subjects .
Time frame: 1 month post- booster/ dose 1 for Naïve
Percentage of Subjects (Who Previously Received 4 Doses of Men B Vaccine) With 4-fold Increase in Serum Bactericidal Antibody Titers After Receiving a Booster Dose of Either rMenB or rMenB+OMV NZ Vaccine at 40 Months of Age.
The percentages of subjects (who had previously received four doses MenB vaccine in parent study) showing a 4-fold increase in hSBA titers over baseline against N.meningitidis B strains, after receiving a booster dose of either rMenB or rMen+OMV NZ vaccines at 40 months of age are compared with hSBA responses following one catch-up dose of rMenB+OMV NZ vaccine given at 40 months in vaccine-naive subjects. Baseline is defined as either the time that the (first) booster dose was given or the time of the first vaccination in this study.
Time frame: 1 month post - booster/ -dose 1 for Naïve
Geometric Mean Antibody Titers in Children After Receiving Two Booster Doses of Either rMenB or rMenB+OMV NZ Vaccine at 40 & 42 Months of Age.
The GMTs against N.meningitidis B strains in children (who had previously received one dose MenB vaccine in parent study) after a two booster doses of either rMenB or rMenB+OMV NZ vaccine given at 40 \& 42 months of age.
Time frame: 1 month post vaccination
Percentage of Subjects With Serum Bactericidal Antibody Titers ≥ 1:4 and ≥ 1:8 After Receiving Two Booster Doses of Either rMenB or rMenB+OMV NZ Vaccine at 40 & 42 Months of Age.
The percentages of subjects (who had previously received one dose of MenB vaccine in parent study) with hSBA ≥ 1:4 and ≥ 1:8, against N.meningitidis B strains after receiving two booster doses of either rMenB or rMenB+OMV NZ vaccine at 40 \& 42 months of age.
Time frame: 1 month post vaccination
Percentage of Subjects With 4-fold Increase in Antibody Titers After Receiving Two Booster Doses of Either rMenB or rMenB+OMV NZ Vaccine at 40 & 42 Months of Age.
The percentages of subjects (who had previously received one dose of MenB vaccine in parent study) displaying 4-fold increase in antibody titers over baseline against N.meningitidis B strains, after receiving two booster doses of either rMenB or rMenB+OMV NZ vaccine at 40 \& 42 months of age.
Time frame: 1 month post vaccination
Percentage of Subjects With hSBA Titers ≥ 1:4 and ≥1:8 Following Two Catch up Doses of rMenB+OMV NZ Vaccine Given One Month Apart, Either at 40 or 60 Months of Age.
The percentage of subjects with hSBA ≥ 1:4 and ≥ 1:8 after two catch-up doses of rMenB+OMV NZ vaccine when given either at 40 \& 42 months or 60 \& 62 months of age are reported.
Time frame: 1 month post -vaccine dose two
Geometric Mean Antibody Titers in Children After Two Catch up Doses of rMenB+OMV NZ Vaccine Given, Either at 40 or 60 Months of Age.
The geometric mean antibody titers in children after two catch-up doses of rMenB+OMV NZ vaccine when given either at 40 \& 42 months or 60 \& 62 months of age are reported.
Time frame: 1 month post vaccine dose two
Percentage of Subjects With a 4-fold Increase in Antibody Titers After Receiving Two Catch up Doses of rMenB+OMV NZ Vaccine, Either at 40 or 60 Months of Age.
The percentages of subjects with four-fold increase in hSBA titers over baseline against N.meningitidis B one month after receiving a two catch-up doses of rMenB+OMV NZ vaccine either at 40 \& 42 months or 60 \& 62 months of age.
Time frame: 1 month post vaccine dose 2
Persisting Geometric Mean Antibody Titers Against N.Meningitidis B in Children at 60 Months of Age.
The persisting GMTs against N.meningitidis B strains in children at 60 months of age who had received one or two booster doses of either rMenB or rMenB+ OMV NZ vaccine or had received two catch-up doses of rMenB+ OMV NZ vaccine at 40 months of age in the present study are compared with GMTs in vaccine-naïve subjects.
Time frame: 18-20 months after last Men B vaccine; baseline for naïve_6062
Percentage of Subjects With Persisting Serum Bactericidal Antibodies ≥1:4 and ≥1:8 in Children at 60 Months of Age.
The percentage of subjects with persisting hSBA titers ≥1:4 and ≥1:8 at 60 months of age against N.meningitidis B strains after having received one or two booster doses of either rMenB or rMenB+ OMV NZ vaccine or had received two catch-up doses of rMenB+ OMV NZ vaccine at 40 months of age in the present are reported.
Time frame: 18-20 months after last Men B vaccine; baseline for naïve_6062
Persisting Geometric Mean Antibody Concentrations Against Vaccine Antigen 287-953 in Children (Who Had Previously Received 4 Doses of MenB Vaccine in Parent Study) at 40 Months of Age.
The persisting geometric mean antibody concentrations (GMCs) against vaccine antigen 287-953 in children (at 40 months of age) who had previously received 4 doses of either rMenB or rMen+OMV NZ vaccines in parent study , are compared with the the GMCs in vaccine-naïve children. GMCs against vaccine antigen 287-953 were measured using enzyme linked immunosorbent assay (ELISA).
Time frame: 28 months after last Men B vaccination; Baseline for Naïve_4042 group
Persisting Geometric Mean Antibody Concentrations Against Vaccine Antigen 287-953 in Children (Who Had Previously Received 1dose of MenB Vaccine in Parent Study) at 40 Months of Age.
The persisting GMCs against vaccine antigen 287-953 in children (at 40 months of age) who had previously received 1 dose of either rMenB or rMen+OMV NZ vaccines in parent study , are compared with the the GMCs in vaccine-naïve children. GMCs against vaccine antigen 287-953 were measure using ELISA.
Time frame: 28 months after last Men B vaccination; baseline for naïve_4042 group
Geometric Mean Antibody Concentrations Against Vaccine Antigen 287-953 in Children (Who Had Previously Received 4 Doses of MenB Vaccine) After Receiving One Booster Dose of Either rMenB or rMenB+OMV NZ at 40 Months of Age.
The GMCs against vaccine antigen 287-953 in children (who had previously received four doses MenB vaccine in parent study) after a single booster dose of either rMenB or rMenB+OMV NZ vaccine given at 40 months of age, are compared with the GMCs following one catch-up dose rMenB+OMV NZ vaccine given at 40 months to vaccine-naive subjects.
Time frame: 1 month post booster; 1 month post dose for naïve_4042 group
Geometric Mean Antibody Concentrations Against Vaccine Antigen 287-953 in Children After Receiving Two Booster Doses of Either rMenB or rMenB+OMV NZ at 40 & 42 Months of Age.
The GMCs against vaccine antigen 287-953 in children (who had previously received 1 dose of either rMenB or rMen+OMV NZ vaccines in parent study) , are compared with the GMCs in children who received to catch-up doses of rMenB+OMV NZ at 40 \& 42 months .
Time frame: 1 month after each booster/ vaccine dose
Geometric Mean Concentrations Against Vaccine Antigen 287-953 in Children After Two Catch up Doses of rMenB+OMV NZ Vaccine Given Either at 40 or 60 Months of Age.
The GMCs against vaccine antigen 287-953 in children after two catch-up doses of rMenB+OMV NZ vaccine when given either at - 40 \& 42 months or 60 \& 62 months of age are reported.
Time frame: 1 month post vaccine dose two
Persisting Geometric Mean Concentrations Against Vaccine Antigen 287-953 in Children at 60 Months of Age.
The persisting GMCs against vaccine antigen 287-953 in children at 60 months of age who had either received one or two booster doses of either rMenB or rMenB+OMV NZ vaccine or had received two catch-up doses of rMenB+OMV NZ vaccine at 40 months of age in the present are compared with GMCs in vaccine-naïve subjects.
Time frame: 18-20 months after last Men B vaccine; baseline for naïve_6062
Number of Subjects Reporting Solicited Local and Systemic Adverse Events After a Receiving Two Catch-up Doses of rMenB+OMV NZ Vaccine Either at 40 Months or 60 Months of Age.
The safety and tolerability of two catch-up doses of rMenB+OMV NZ vaccine when administered either at 40 \& 42 months or 60 \& 62 months of age in children is assessed in terms of number of subjects with solicited local and systemic reactions following vaccination.
Time frame: Day 1-7 after any vaccination
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