E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Prophylaxis against Neisseria meningitidis serogroups A, C, W135 and Y |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Bacterial Infections and Mycoses [C01] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To assess the immunogenicity of a single injection of MenACWY-CRM as
measured by the percentage of subjects with hSBA seroresponse, directed against N meningitidis serogroups A, C, W135 and Y. |
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E.2.2 | Secondary objectives of the trial |
Immunogenecity Objectives
- To assess the immunogenicity of a single injection of MenACWY-CRM vaccine as measured by the percentage of subjects with hSBA seroresponse, directed against N meningitidis serogroups A, C, W135 and Y by age group (2-10b, 11-18c
years).
- To assess the immunogenicity of a single injection of MenACWY-CRM as measured by hSBA geometric mean titers (GMTs and GMRd) and by the percentage of subjects with hSBA titer ≥ 1:8, directed against N meningitidis serogroups A, C, W135 and Y, overall and by age group.
Safety Objectives
To assess the safety profile following MenACWY-CRM vaccination in terms of percentages and numbers of subjects with:
- Local and systemic reactionse reported from day 1 (day of vaccination) through day 7 postvaccination.
- All other adverse eventsf (AEs) reported from day 1 through day 7
postvaccination.
- Serious AEs (SAEs), medically attended AEs and AEs resulting in premature withdrawal from day 1 through day 29. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Individuals eligible for enrollment in this study were those:
1. who were of any gender, from the age of ≥ 2 to ≤ 18 years of age at the time of visit 1, and to whom the nature of the study had been explained and
a. the parent/legal representative had provided written informed consent.
b. had provided written assent (≥ 7 to ≤ 18 years of age)
2. who the investigator believed that their parents/legal representatives would comply with the requirements of the protocol (e.g., completion of the diary card, return for the follow-up visit).
3. who were in good health as determined by
a. medical history
b. physical exam
c. clinical judgment of the investigator
4. who had a negative urine pregnancy test for female subjects ≥ 11 years of age. |
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E.4 | Principal exclusion criteria |
Individuals not eligible to be enrolled in the study were those:
1. who were unwilling or unable to give written informed assent or consent to participate in the study.
2. who were perceived to be unreliable or unavailable for the duration of the study period.
3. who had a previously confirmed or suspected disease caused by N meningitidis.
4. who had household contact with and/or intimate exposure to an individual with culture-proven N meningitidis infection within 60 days prior to enrolment.
5. who had previously been vaccinated with a meningococcal vaccine or vaccine containing meningococcal antigen(s) (licensed or investigational).
6. who had received any investigational or non-registered product (drug or vaccine) within 28 days prior to enrolment or who expected to receive an investigational drug or vaccine prior to the completion of the study.
7. who had received any vaccines within 14 days (for inactivated vaccines) or 28 days (for live vaccines) prior to enrolment in this study or who were planning to receive any vaccine within 30 days from the study vaccines. (Exception: Influenza vaccine could be administered up to 15 days prior to study vaccination and at least 15 days
after study vaccination).
8. who had experienced within the 7 days prior to enrolment significant acute infection (for example requiring systemic antibiotic treatment or antiviral therapy) or had experienced fever (defined as body temperature 38 °C) within 3 days prior to enrollment.
9. who had any serious acute, chronic or progressive disease (e.g., any history of neoplasm, cancer, diabetes, cardiac disease, autoimmune disease, HIV infection or AIDS, or blood dyscrasias, with signs of cardiac or renal failure or severe malnutrition), who had epilepsy or any progressive neurological disease or history of Guillain-Barre syndrome.
10. who had a history of any anaphylaxis, serious vaccine reactions, or allergy to any vaccine components.
11. who had a known or suspected impairment/alteration of immune function, either congenital or acquired or resulting from (for example):
a. received immunosuppressive therapy within 30 days prior to enrolment (any systemic corticosteroid administered for more than 5 days, or in a daily dose > 1 mg/kg/day prednisone or equivalent during any of 30 days prior to enrolment, or cancer chemotherapy)
b. received immunostimulants.
c. received parenteral immunoglobulin preparation, blood products, and/or plasma derivatives within 90 days prior to enrolment and for the full length of the study
12. who were known to have a bleeding diathesis, or any condition that may be associated
with a prolonged bleeding time.
13. who had Down’s syndrome or other known cytogenic disorders.
14. who had any condition that, in the opinion of the investigator, might interfere with the evaluation of the study objectives. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Percentage of subjects with hSBA seroresponse to N meningitidis serogroups A, C, W135 and Y at day 29 in the overall subjects (≥ 2 to ≤ 18 years of age).
Seroresponse is defined as:
-for subjects with a prevaccination hSBA titer < 1:4, a postvaccination hSBA titer ≥ 1:8.
-for subjects with a prevaccination hSBA titer ≥ 1:4, an increase in hSBA titer of at least four times the prevaccination titer. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
Immunogenecity endpoint
-Percentage of subjects with hSBA seroresponse to N meningitidis serogroups A, C, W135 and Y at day 29 by age group (≥ 2 to ≤ 10 years and ≥ 11 to ≤ 18 years).
-hSBA GMTs to N meningitidis serogroups A, C, W135 and Y at day 1 and day 29, overall and by age group.
-hSBA geometric mean ratio (GMR) to N meningitidis serogroups A, C, W135 and Y, overall and by age group.
-Percentage of subjects with hSBA titer ≥ 1:8 to N meningitidis serogroups A, C, W135 and Y at day 1 and day 29, overall and by age group.
Safety Endpoints
-Numbers and percentages of subjects with reported solicited local and systemic AEs and unsolicited AEs. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Immunogenecity Objective -
Day 1 and Day 29
Safety objective -
Local and systemic reactions- Day 1 through Day 7 postvaccination.
Other adverse events- Day 1 through Day 7 postvaccination.
Serious AEs (SAEs), medically attended AEs and AEs- Day 1 through Day 29. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | Yes |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | Yes |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial years | 0 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 0 |