E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
Prevention of Influenza (flu) Infection |
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E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 19.0 |
E.1.2 | Level | HLT |
E.1.2 | Classification code | 10022005 |
E.1.2 | Term | Influenza viral infections |
E.1.2 | System Organ Class | 100000004862 |
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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 demonstrate in a population of children and adolescents 3 to 17 years of age the non-inferiority of quadrivalent influenza vaccine (QIV) with respect to post-vaccination geometric mean Hemagglutination Inhibition (HI) antibody titers against the shared strains compared with the trivalent influenza vaccines (TIV) with either the B-strain of the Victoria (TIV(Vic)) or the B-strain of the Yamagata lineage (TIV(Yam)). |
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E.2.2 | Secondary objectives of the trial |
1.To demonstrate the superiority of QIV to TIV(Vic) and TIV(Yam)with respect to post-vaccination geometric mean HI antibody titers against the alternate-lineage B strain in a population of children and adolescents 3 to 17 years of age.
2.To describe the immunogenicity of each of the strains in QIV with respect to HI, Virus Neutralization (VN) and Neuraminidase Inhibition (NI) antibody titers in the study population overall and by subject age, preexisting antibody status and baseline health status.
3.To describe Cell-Mediated Immunity (CMI) values for a subset of subjects.
Safety Objective:
To compare the reactogenicity and safety of QIV with that of TIV in a population of children and adolescents 3 to 17 years of age.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
•Male and female children and adolescents 3 to 17 years of age at the time of enrolment in stable health determined from medical history, physical examination and clinical judgment of the Investigator. Subjects may have underlying illnesses as long as their symptoms/signs are controlled.
•The subject’s parent(s) or LAR(s) sign and date a written, informed consent form (ICF). An assent will also be obtained according to age appropriate country-specific regulations.
•Subject and parent(s) or LAR(s) are able and willing to attend all scheduled visits and to comply with all trial procedures.
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E.4 | Principal exclusion criteria |
1.Child in care (as defined in the protocol)
2.History of allergy to egg, chicken proteins, or history of any reaction or hypersensitivity to a previous dose of influenza vaccine components.
3.History of serious adverse reaction to any influenza vaccine.
4.History of Guillain-Barré syndrome.
5.History of seizures (subject who had a single uncomplicated febrile convulsion in the past could be included) or progressive neurological disease.
6.Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination (no laboratory testing required).
7.Prior receipt of any seasonal or pandemic influenza vaccine (registered or investigational) or laboratory-confirmed influenza infection in the 6 months preceding the first study vaccination.
8.Receipt of any vaccine (including routine childhood vaccines) within the preceding 30 days or planned vaccination during the study within 30 days after any study vaccine administration.
9.Having fever and/or acute disease or infection on the day of first study vaccination (enrolment can be deferred for up to 2 weeks provided subject remains otherwise eligible).
10.Any known immunocompromising condition or immunosuppressive therapy within 6 months preceding enrolment.
11.Chronic systemic administration (defined as more than 14 days) of immunosuppressant or immune-modifying medication (such as corticosteroids and monoclonal antibodies) during 3 months prior to the first study vaccination or planned use thereof during the study. Topical use of corticosteroids (e.g., cream, ocular drops, inhalation and intranasal sprays), within the dosage noted on the product label, is allowed.
12. Any condition that in the opinion of the Investigator would pose a health risk to the subject if enrolled or could interfere with the evaluation of the vaccine including (but not limited to) bleeding disorder, acute or progressive clinically-significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by medical history and/or physical examination.
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint concerns the geometric mean HI antibody titers against the 4 vaccine strains |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
28 days after study vaccination (Day 29, primed subjects) or 28 days after the second study vaccination (Day 57, unprimed subjects). |
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E.5.2 | Secondary end point(s) |
The secondary endpoints concern:
1)Change from baseline geometric mean HI antibody titers against the 4 vaccine strains.
2)Post-vaccination geometric mean VN and NI antibody titers and change from baseline against the 4 vaccine strains for a randomized subset of subjects.
3)Seroconversion rates and geometric mean fold increases for HI, VN and NI for the 4 vaccine strains for a randomized subset of subjects.
4)Post-vaccination CMI values for a subset of subjects and change from baseline.
Safety points:
1)All unsolicited (spontaneously reported) AEs
2)SAEs, AESIs and NCIs
3) Solicited injection site reactions and systemic reactions |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1)2)3)4: Day 29 for primed subjects
Day 57 for unprimed subjects
For Safety points:
1) From ICF signature to Day 29 (primed subjects) or Day 57 (unprimed subjects)
2) from ICF signature to final follow-up telephone call approximately 6 months later (Day 183)
3) within 7 days following each study vaccination. |
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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 | Yes |
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 |
Immunogenicity and reactogenicity |
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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 | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
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) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 3 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 30 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
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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LVLS (last visit is the safety follow up phone contact at Day 183) |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | 8 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial months | 8 |