E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Safety and Immunogenicity of Trivalent Subunit Inactivated Flu Vaccine Administered to Healthy Children and Adolescents 3 to 17 Years of Age |
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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] - Virus Diseases [C02] |
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 demonstrate the non-inferiority of the HI antibody responses of Agriflu for the three influenza strains when compared to US licensed trivalent inactivated influenza vaccines (controls) 21 days after last vaccination1 in children ages 3 to 8 years as measured by:
▫differences in percentage of subjects achieving seroconversion
▫ vaccines ratio of post-vaccination geometric mean titers (GMT)
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E.2.2 | Secondary objectives of the trial |
To evaluate the immunogenicity of Agriflu and comparators for the three influenza strains 21 days after last vaccination in children ages 3 to 8 years as measured by:
▫ Percentage of subjects achieving an HI titer ≥1:40
▫ Percentage of subjects achieving a seroconversion.
Safety Objective
To evaluate the safety and tolerability of Agriflu and comparator in 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 |
1. Males and females aged 3 to 17 years (inclusive) on the day of enrollment.
2. Individuals in good health as determined by medical history, physical examination and clinical judgment of the investigator.
3. Documented consent provided by parents or legal guardians after the nature of the study was explained to them according to local regulatory requirements.
4. For individuals 8 years of age and older, informed assent to participate in the study after the nature of the study was explained to them in terms they could understand better.
5. Individuals and parents/guardians who were able to comply with all study procedures and were available for all clinic visits scheduled in the study.
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E.4 | Principal exclusion criteria |
1. Parents/legal guardians and individuals who had to provide assent, who were not able to comprehend and follow all required study procedures for the whole period of the study.
2. Parents/legal guardians and individuals who had to provide assent, who could not consent to the retention of the subject’s serum samples after study completion.
3. Individuals with behavioral/cognitive impairment/psychiatric disease that, in the opinion of the investigator, interfered with the subject's ability to participate in the study.
4. Individuals with history/any illness that, in the opinion of investigator, interfered with the results of the study or posed additional risk to the subjects due to study participation
5. History of any anaphylaxis, serious vaccine reactions, or hypersensitivity to influenza viral proteins, latex, any excipients, and eggs (including ovalbumin), chicken protein, influenza viral protein, kanamycin, neomycin sulphate, cetyltrimethylammonium bromide (CTAB), polysorbate 80, neomycin, polymixin, formaldehyde, thimerosal, beta propriolactone, or nonoxynol-9
6. History of any serious disease, such as:
a. cancer
b. history of serious chronic diseases (cardiac, renal, hepatic, metabolic (including diabetes mellitus), rheumatologic (including autoimmune disease such as rheumatoid arthritis), neurologic (including history of atypical febrile seizure or history of Guillain-Barré disease), and hematologic (including bleeding diathesis).
c. history of underlying medical condition such as inborn errors of metabolism, failure to thrive, broncho-pulmonary dysplasia, or any major congenital abnormalities requiring surgery, chronic treatment, or associated with developmental delay (e.g., Down’s syndrome).
7. Known/suspected impairment/alteration of immune function, included:
a. chronic use of oral steroids within 60 days prior to Visit 1 (use of inhaled, intranasal, or topical corticosteroids is allowed)
b. received immuno-stimulants within 60 days prior to Visit 1
c. received parenteral immunoglobulin preparation, blood products, and/or plasma derivates within 3 months prior to Visit 1 or planned during the full length of the study
d. HIV infection or HIV-related disease
e. Heritable immunodeficiency
f. Abnormalities of splenic or thymic function
8. Pregnant or breast-feeding female
9. Any positive or indetermined pregnancy test
10. If female, ―of childbearing potential‖, sexually active, and did not use any of the
―acceptable contraceptive methods for at least 2 months prior to study entry
a. Of childbearing potential was defined as status post onset of menarche and not surgically sterile
b. Acceptable birth control methods were defined as one or more of the following:
i. Hormonal contraceptive (such as oral, injection, transdermal patch, implant, cervical ring)
ii. Barrier (condom with spermicide or diaphragm with spermicide) each and every time during intercourse
iii. Intrauterine device (IUD)
iv. Monogamous relationship with vasectomized partner. Partner had
to be vasectomized for at least six months prior to the subject’s
study entry
11. If female of childbearing potential and sexually active, refused to use an
―acceptable contraceptive method‖ during the first 3 weeks after vaccination
12. If female of childbearing potential, refused to submit for pregnancy testing prior to study vaccination
13. Received influenza vaccine within 6 months prior to Visit 1
14. Laboratory-confirmed or suspected influenza disease within 6 months prior to
Visit 1. ―Laboratory-confirmed:
a. Positive serology result
b. Positive viral culture
c. Positive rapid antigen test
―Suspected‖ influenza disease: subjects with influenza-like illness within the past 6 months with a household/intimate contact with ―laboratory-confirmed influenza disease
15. Received another vaccine within 2 weeks (for inactivated vaccines) or 4 weeks (for live vaccines) prior to enrollment in this study
16. Experienced fever and/or any acute illness within 3 days prior
to each study vaccination
17. Used antipyretic/analgesic medication within 24 hours of each study vaccination
18. Received another investigational agent within 30 days prior to enrollment in the study or before completion of the safety follow-up period in another study, whichever was longer, prior to enrollment and unwilling to refuse participation in another clinical study through the end of the study
19. Research staff or research staff children directly involved with the clinical study or family members or household members of research staff. Research staff were individuals with direct or indirect contact with study subjects, or study site personnel who had access to any study documents containing subject information.
This included receptionists, persons scheduling appointments or making screening calls, regulatory specialists, laboratory technicians, etc
20. Elective surgery or hospitalization planned during the period of study participation |
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary
Non-inferiority was to be demonstrated if:
▫ The upper bound of the two-sided 95% confidence interval (CI) on the ratio of the
GMTs (GMTcontrol/GMTAgriflu) at 21 days after last vaccination does not exceed 1.5.
▫ The upper bound of the two-sided 95% CI on the difference between the seroconversion rates (Seroconversioncontrol – SeroconversionAgriflu) at 21 days after last vaccination does not exceed 10 percentage points. |
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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) |
Secondary
▫ the lower bound of the two-sided 95% CI for the percentage of subjects achieving an heamagglutination (HI) HI antibody titer ≥1:40 (seroprotection).
▫ the lower bound of the two-sided 95% CI for the percentage of subjects achieving seroconversion in HI antibody titer.
For the subset of subjects who received two vaccine doses, the same immunogenicity endpoints were evaluated at Day 29 (i.e. 4 weeks after the first injection).
Safety Endpoints
The measures of safety included solicited reactions, unsolicited adverse events (AEs) and concomitant medications in all subjects exposed to study vaccines. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Immunogenicity endpoints
Day 29
Safety endpoint
6months and 7months for subjects receiving one dose and two doses after initial study vaccination respectively |
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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 | 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 | 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) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 4 |
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 |
Colombia |
Mexico |
Panama |
Philippines |
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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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The End of Trial corresponds to the last visit of the last subject undergoing the trial (LSLV, Last Subject Last Visit). |
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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 | 7 |
E.8.9.2 | In all countries concerned by the trial days | 0 |