Persistence and Booster Study of GSK Biologicals' Meningococcal Vaccine (GSK134612) in Healthy Children

Subjects were previously vaccinated at 2 to 10 years of age with GSK134612 or with Menjugate®. The persistence phase starts 32 months after the primary vaccination and blood samples will be taken at 32, 44, 56 and 68 months after primary vaccination. All subjects will receive a booster dose of GSK134612 at 68 months after primary vaccination and a blood sample will be taken 1 month after administration of the booster dose.

• Nimenrix (GSK134612 vaccine) (Biological): Intramuscular, 1 dose
• Menjugate (Biological): Intramuscular, 1 dose

Primary outcomes

• Number of Subjects With Serum Bactericidal Assay, Using Baby Rabbit Complement, Against Neisseria Meningitides Serogroup A, C, W-135, Y (rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY) Antibody Titers Was Greater Than or Equal to (≥) 1:8, at Month 32. [At Month 32, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 44. [At Month 44, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 56. [At Month 56, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 68. [At Month 68, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.

Secondary outcomes

• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 32. [At Month 32, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:128. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 44. [At Month 44, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:128. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 56. [At Month 56, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:128. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 68. [At Month 68, post-primary vaccination]: The pre-defined cut-off value of the assay for the rSBA titers was greater than or equal to (≥) 1:128. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 32. [At Month 32, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 44. [At Month 44, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 56. [At Month 56, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 68. [At Month 68, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With Serum Bactericidal Assay, Using Human Complement, Against N. Meningitides Serogroup A, C, W-135, Y (hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY) Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 32. [At Month 32, post-primary vaccination]: The pre-defined cut-off values of the assay for the hSBA titers were greater than or equal to (≥) 1:4 and ≥ 1:8. These analyses have been performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 44. [At Month 44, post-primary vaccination]: The pre-defined cut-off values of the assay for the hSBA titers were greater than or equal to (≥) 1:4 and ≥ 1:8. These analyses have been performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 56. [At Month 56, post-primary vaccination]: The pre-defined cut-off values of the assay for the hSBA titers were greater than or equal to (≥) 1:4 and ≥ 1:8. These analyses have been performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 68. [At Month 68, post-primary vaccination]: The pre-defined cut-off values of the assay for the hSBA titers were greater than or equal to (≥) 1:4 and ≥ 1:8. These analyses have been performed in all subjects, by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 32. [At Month 32, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 44. [At Month 44, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 56. [At Month 56, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed on 50% of the subjects in each group, by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 68. [At Month 68, post-primary vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128 and 1:8. [At Month 69, one month post-booster vaccination]: The pre-defined cut-off values of the assay for the rSBA titers were greater than or equal to (≥) 1:128 and ≥ 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY [At Month 69, one month post-booster vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and 1:8. [At Month 69, one month post-booster vaccination]: The pre-defined cut-off values of the assay for the hSBA titers were greater than or equal to (≥) 1:4 and ≥ 1:8. These analyses have been performed by the Health Protection Agency (HPA) laboratory.
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY [At Month 69, one month post-booster vaccination]: Antibody titers were presented as geometric mean titers (GMTs). These analyses were performed by the Health Protection Agency (HPA) laboratory.
• Number of Subjects With a Vaccine Response to rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibodies [At Month 69, one month post-booster vaccination]: Vaccine response to rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY was defined as rSBA antibody titers ≥1:32, for initially seronegative subjects (i.e. pre-vaccination rSBA antibody titers <1:8) and at least a 4-fold increase in rSBA antibody titers from pre to post-vaccination for initially seropositive subjects (i.e. pre-vaccination rSBA antibody titers ≥1:8).
• Number of Subjects With a Vaccine Response to hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibodies [At Month 69, one month post-booster vaccination]: Vaccine response to hSBA-MenA, hSBA-MenC, rSBA-MenW-135 and hSBA-MenY was defined as hSBA antibody titers ≥ 1:8, for initially seronegative subjects (i.e. pre-vaccination hSBA antibody titers <1:4) and at least a 4-fold increase in hSBA antibody titers from pre to post-vaccination for initially seropositive subjects (i.e. pre-vaccination hSBA antibody titers ≥1:4).
• Number of Subjects With Any and Grade 3 Solicited Local Symptoms [During the 4-day (Days 0-3) period following the booster vaccination]: Solicited local symptoms assessed include pain, redness and swelling. Grade 3 pain was defined as crying when limb was moved/spontaneously painful. Grade 3 swelling/redness was defined as swelling/redness larger than (>) 50 millimeters (mm). "Any" was defined as incidence of the specified symptom regardless of intensity.
• Number of Subjects With Any, Grade 3 and Solicited General Symptoms [During the 4-day (Days 0-3) period following the booster vaccination]: Assessed solicited general symptoms were fatigue, gastrointestinal symptoms, headache and temperature (axillary temperature higher than \[≥\] 37.5 degrees Celsius \[°C\]). 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 Fatigue = Fatigue that prevented normal activity. Grade 3 Gastrointestinal symptoms = Gastrointestinal symptoms that prevented normal everyday activities. Grade 3 Headache = Headache that prevented normal acitivity. Grade 3 Fever = Rectal temperature higher than (>) 39.5°C.
• Number of Subjects With Any Unsolicited Adverse Events (AEs) [During the 31-day (Days 0-30) period following the booster vaccination]: An unsolicited AE covers 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 and 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. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination.
• Number of Subjects With Serious Adverse Events (SAEs) [During the 31-day (Days 0-30) period following the booster vaccination]: Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
• Number of Subjects With Any New Onset of Chronic Illnesses (NOCIs) [During the 31-day (Days 0-30) period following the booster vaccination]: New onset of chronic illnesses (NOCIs) included: autoimmune disorders, asthma, type I diabetes and allergies.
• Number of Subjects With Serious Adverse Events SAEs [Up to Month 32, 44, 56 and 68]: SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity.

Sex: All, ages: 4 Years to 16 Years, accepts healthy volunteers

Inclusion Criteria:

* Subjects who the investigator believes that their parent(s)/Legally Acceptable Representative(s) can and will comply with the requirements of the protocol should be enrolled in the study.
* A male or female who was primed with MenACWY-TT or Menjugate in the primary vaccination study (NCT number = NCT00674583).
* Written informed consent obtained from the parent(s)/Legally Acceptable Representatives(s) of the subject and written informed assent obtained from the subject (at investigator discretion).
* Healthy subjects as established by medical history and clinical examination before entering into the study.

All subjects must meet the additional following criteria prior to receiving the booster vaccination:

* Subjects who had a blood sample taken at Visit 4 during the persistence epoch of the current study.
* Female subjects of non-childbearing potential may be enrolled in the study.
* Female subjects of childbearing potential may be enrolled in the study, if the subject:

  * has practiced adequate contraception for 30 days prior to vaccination, and
  * has a negative pregnancy test on the day of vaccination, and
  * has agreed to continue adequate contraception during the entire treatment period and for 2 months after completion of the vaccination series.

Exclusion Criteria:

* Child in care.
* Use of any investigational or non-registered product within 30 days preceding the first persistence blood sample or planned use within 30 days preceding a blood sample during the study period.
* Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs during the study period. (For corticosteroids, prednisone <10 mg/day, or equivalent, inhaled and topical steroids are allowed).
* Concurrently participating in another clinical study or planned participation in another clinical study, in which the subject has been or will be exposed to an investigational or a non-investigational product within 30 days of a blood sample.
* History of meningococcal disease.
* Administration of a meningococcal polysaccharide or a meningococcal polysaccharide conjugate vaccine since the previous vaccination in the primary vaccination study (NCT number = NCT00674583).
* Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus infection, based on medical history and physical examination.
* Serious chronic illness.
* Administration of immunoglobulins and/or blood products within the 3 months preceding the subject's first visit.
* Bleeding disorders, such as thrombocytopenia, or subjects on anti-coagulant therapy.
* Subjects in contact with somebody suffering from an invasive infection with meningococcal serogroups A, C, Y or W-135.
* Subjects living in a geographic area where local outbreak with meningococcal serogroup C has occurred.

Exclusion criteria for booster vaccination to be checked at Visit 4 (Month 68)

* Child in care.
* Use of any investigational or non-registered product within 30 days preceding the booster vaccination or planned use during the study period.
* Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within six months prior to the booster vaccination. (For corticosteroids, prednisone <10 mg/day, or equivalent, inhaled and topical steroids are allowed).
* Vaccination with meningococcal polysaccharide or conjugate vaccine of serogroup A, B, C, W-135, and/or Y since the previous vaccination in the primary vaccination study (NCT number = NCT00674583).
* History of meningococcal disease.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus infection, based on medical history and physical examination.
* Administration of immunoglobulins and/or any blood products within the three months preceding the booster vaccination or planned administration during the study period.
* Concurrently participating in another clinical study or planned participation in another clinical study, at any time during the study period, (from the time of the booster until the end of the study) in which the subject has been or will be exposed to an investigational or a non-investigational product.
* Bleeding disorders, such as thrombocytopenia, or subjects on anti-coagulant therapy.
* Hypersensitivity to latex.
* Planned administration/ administration of a vaccine not foreseen by the study protocol within the last 30 days of the dose of vaccine(s) with the exception of a licensed inactivated influenza vaccine.
* Previous vaccination with tetanus toxoids within the last 30 days.
* A family history of congenital or hereditary immunodeficiency, until the immune competence of the potential vaccine recipient is demonstrated.
* History of allergic disease or reactions likely to be exacerbated by any component of the vaccine.
* Serious chronic illness.
* History of any neurological disorders or seizures (although subjects with a prior history of a single episode of benign febrile seizures may be allowed to participate in the study).
* Acute disease and/or fever at the time of vaccination.
* History of chronic alcohol consumption and/or drug abuse.
* History of hypotonic-hyporesponsive episodes (HHEs) following vaccination.
* Subjects in contact with somebody suffering from an invasive infection with meningococcal serogroups A, C, Y or W-135.
* Subjects living in a geographic area where local outbreak with meningococcal serogroup C has occurred.
* Pregnant or lactating female.
* Female of child-bearing potential planning to become pregnant or planning to discontinue contraceptive precautions.

Participant flow

Outcome results

• Number of Subjects With Serum Bactericidal Assay, Using Baby Rabbit Complement, Against Neisseria Meningitides Serogroup A, C, W-135, Y (rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY) Antibody Titers Was Greater Than or Equal to (≥) 1:8, at Month 32. (Primary), Count of participants, Participants: Nimenrix Group 167; Menjugate Group 15
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 44. (Primary), Count of participants, Participants: Nimenrix Group 162; Menjugate Group 17
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 56. (Primary), Count of participants, Participants: Nimenrix Group 161; Menjugate Group 19
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:8, at Month 68. (Primary), Count of participants, Participants: Nimenrix Group 154; Menjugate Group 18
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 32. (Secondary), Count of participants, Participants: Nimenrix Group 140; Menjugate Group 9
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 44. (Secondary), Count of participants, Participants: Nimenrix Group 151; Menjugate Group 16
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 56. (Secondary), Count of participants, Participants: Nimenrix Group 107; Menjugate Group 10
• Number of Subjects With rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY Antibody Titers ≥ 1:128, at Month 68. (Secondary), Count of participants, Participants: Nimenrix Group 107; Menjugate Group 12
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 32. (Secondary), Geometric mean, Titers: Nimenrix Group 196.3 (144.1 to 267.2); Menjugate Group 8 (5.5 to 11.7)
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 44. (Secondary), Geometric mean, Titers: Nimenrix Group 307.5 (223.7 to 422.8); Menjugate Group 13.5 (8 to 23)
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 56. (Secondary), Geometric mean, Titers: Nimenrix Group 120.1 (87.0 to 165.9); Menjugate Group 9.8 (6.4 to 15.0)
• Antibody Titers for rSBA-MenA, rSBA-MenC, rSBA-MenW-135 and rSBA-MenY, at Month 68. (Secondary), Geometric mean, Titers: Nimenrix Group 129.5 (93.5 to 179.3); Menjugate Group 11.1 (7.0 to 17.7)
• Number of Subjects With Serum Bactericidal Assay, Using Human Complement, Against N. Meningitides Serogroup A, C, W-135, Y (hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY) Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 32. (Secondary), Count of participants, Participants: Nimenrix Group 24; Menjugate Group 5
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 44. (Secondary), Count of participants, Participants: Nimenrix Group 26; Menjugate Group 5
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 56. (Secondary), Count of participants, Participants: Nimenrix Group 53; Menjugate Group 19
• Number of Subjects With hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY Antibody Titers ≥ 1:4 and ≥ 1:8, at Month 68. (Secondary), Count of participants, Participants: Nimenrix Group 70; Menjugate Group 23
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 32. (Secondary), Geometric mean, Titers: Nimenrix Group 4.6 (3.3 to 6.3); Menjugate Group 2.7 (2.1 to 3.4)
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 44. (Secondary), Geometric mean, Titers: Nimenrix Group 4.8 (3.4 to 6.7); Menjugate Group 2.8 (2.1 to 3.7)
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 56. (Secondary), Geometric mean, Titers: Nimenrix Group 10.6 (7.6 to 14.9); Menjugate Group 7.6 (5.0 to 11.8)
• Antibody Titers for hSBA-MenA, hSBA-MenC, hSBA-MenW-135 and hSBA-MenY, at Month 68. (Secondary), Geometric mean, Titers: Nimenrix Group 6.9 (5.4 to 8.9); Menjugate Group 4.5 (3.3 to 6.0)
• 12 more outcome measures not shown.

Adverse events

Time frame: Solicited local and general symptoms: during the 4-day (Days 0-3) post-vaccination period; Unsolicited AEs: during the 31-day (Days 0-30) post-vaccination period; SAEs: during the entire study period (Month 32 up to Month 69).

Other adverse events by term

• GSK Clinical Trials, Study director, GlaxoSmithKline