E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Active immunization of infants for the prevention of any lower respiratory tract infections (LRTI; bronchiolitis and [broncho]pneumonia) associated with respiratory syncytial virus (RSV [subtypes A and B]) |
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E.1.1.1 | Medical condition in easily understood language |
Respiratory tract infection caused by respiratory syncytial virus (RSV) |
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E.1.1.2 | Therapeutic area | Diseases [C] - Respiratory Tract Diseases [C08] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10061603 |
E.1.2 | Term | Respiratory syncytial virus infection |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10038718 |
E.1.2 | Term | Respiratory syncytial virus bronchiolitis |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10035692 |
E.1.2 | Term | Pneumonia due to respiratory syncytial virus |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
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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 evaluate the safety and reactogenicity of three dose levels of the RSV investigational vaccine when administered as two IM doses according to a 0, 1-month schedule, up to 30 days after Dose 2 (i.e. Day 60) in RSV-seropositive infants aged 12 to 23 months. |
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E.2.2 | Secondary objectives of the trial |
1. To evaluate the safety of two IM doses of three dose levels of the RSV investigational vaccine when administered according to a 0, 1-month schedule from study start (Day 0) up to study conclusion (Day 730) in RSV-seropositive infants aged 12 to 23 months.
2. To evaluate the occurrence of RSV respiratory tract infections in RSV-seropositive infants from Visit 1 (Day 0, after Dose 1) up to study conclusion (Day 730).
3. To evaluate the magnitude of the cell-mediated immunity (CMI) induced by two IM doses of three dose levels of the RSV investigational vaccine when administered according to a 0, 1-month schedule, up to Day 365 in RSV-seropositive infants aged 12 to 23 months.
4. To evaluate the humoral immunogenicity induced by two IM doses of three dose levels of the RSV investigational vaccine when administered according to a 0, 1-month schedule, up to Day 365 in RSV-seropositive infants aged 12 to 23 months. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Subjects’ parent(s)/ Legally acceptable representative (LAR[s]) who, in the opinion of the investigator, can and will comply with the requirements of the protocol.
2. Written informed consent obtained from the parent(s)/LAR(s) of the subject prior to performance of any study specific procedure.
3. A male or female between, and including, 12 and 23 months at the time of the first vaccination.
4. Healthy subjects as established by medical history and clinical examination before entering into the study.
5. Seropositive for RSV as determined by IBL International kit.
6. Born full-term (i.e. after a gestation period of 37 to less than 42 completed weeks) with a minimum birth weight of 2.5 kg. (Required for Spain)
7. Subjects’ parent(s)/LAR(s) need to have access to a consistent mean of telephone contact or computer. |
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E.4 | Principal exclusion criteria |
1. Child in care
2. Use of any investigational or non-registered product other than the study vaccine during the period starting 30 days before the first dose of study vaccine (Day -29 to Day 0), or planned use during the study period.
3. Any medical condition that in the judgment of the investigator would make IM injection unsafe.
4. Chronic administration of immunosuppressants or other immune-modifying drugs during the period starting six months prior to the first vaccine. For corticosteroids, this will mean prednisone, or equivalent. Inhaled and topical steroids are allowed.
5. Administration of long-acting immune-modifying drugs or planned administration at any time during the study period.
6. Administration of immunoglobulins and/or any blood products during the period starting three months before the first dose of study vaccine or planned administration during the study period.
7. Planned administration/administration of a vaccine not foreseen by the study protocol in the period starting 30 days before the first dose and ending 30 days after the last dose of vaccine administration, with the exception of scheduled routine pediatric vaccines which may be administered >= 14 days before a dose or >= 7 days after a dose.
8. Acute or chronic, clinically significant pulmonary, cardio-vascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests.
9. Serious chronic illness.
10. Major congenital defects.
11. History of any neurological disorders or seizures.
12. History of or current autoimmune disease.
13. History of recurrent wheezing.
14. History of chronic cough.
15. Previous hospitalization for respiratory illnesses.
16. History of thrombocytopenia.
17. History of anemia.
18. Previous, current or planned administration of Synagis.
19. Neurological complications following any prior vaccination.
20. Born to a mother known or suspected to be HIV-positive.
21. Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
22. Family history of congenital or hereditary immunodeficiency.
23. Previous vaccination with a recombinant simian or human adenoviral vaccine.
24. History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccine.
25. Hypersensitivity to latex.
26. Current severe eczema.
27. Acute disease and/or fever at the time of enrolment.
- Fever is defined as temperature ≥ 37.5°C/99.5°F for oral, axillary or tympanic route, or ≥ 38.0°C/100.4°F for rectal route. The preferred route for recording temperature in this study will be axillary.
- Clinically significant upper respiratory tract infection
- Subjects with a minor illness without fever may, be enrolled at the discretion of the investigator.
28. Any clinically significant Grade 1 or any ≥ Grade 2 hema-tological or biochemical laboratory abnormality detected at the last screening blood sampling.
29. Any other conditions that the investigator judges may interfere with study procedures or findings.
30. Any conditions that could constitute a risk for the subjects while participating to this study.
31. Weight below the fifth percentile of the local weight-for-age curve.
32. Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational vaccine/product.
33. Planned move to a location that will prohibit participating in the trial until study end. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Occurrence of AEs from first vaccination (Day 0) up to Day 60.
-Occurrence of each solicited local and general AE, during a 7-day follow-up period after each vaccination (i.e. the day of vaccination and 6 subsequent days).
-Occurrence of any unsolicited AE, during a 30-day follow-up period after each vaccination (i.e. the day of vaccination and 29 subsequent days).
-Occurrence of any SAE from Day 0 up to Day 60.
-Occurrence of episode of spontaneous or excessive bleeding (AE of specific interest), during a 30-day follow-up period after each vaccination.
-Occurrence of any hematological (hemoglobin level, white blood cells and platelets) laboratory abnormalities at Screening, Day 1, Day 7, Day 30, Day 31, Day 37, and Day 60.
-Occurrence of any biochemical (alanine aminotransferase, aspartate aminotransferase and creatinine) laboratory abnormalities at Screening, Day 30, and Day 60. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1. During a 7-day follow-up period after each vaccination (i.e. the day of vaccination and 6 subsequent days).
2. During a 30-day follow-up period after each vaccination (i.e. the day of vaccination and 29 subsequent days).
3. From Day 0 up to Day 60.
4. During a 30-day follow-up period after each vaccination (i.e. the day of vaccination and 29 subsequent days).
5. At Screening (Day 0), Day 1, Day 7, Day 30, Day 31, Day 37, and Day 60.
6. At Screening (Day 0), Day 30, and Day 60. |
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E.5.2 | Secondary end point(s) |
-Occurrence of SAEs from study start (Day 0) up to study conclusion (Day 730).
- Occurrence of RSV-LRTI (AE of specific interest) as from Dose 1 administration up to study conclusion (Day 730).
-Occurrence of RSV-RTI, RSV-LRTI, severe RSV-LRTI (according to standardized case definitions) as from Dose 1 administration up to study conclusion (Day 730).
-Magnitude of the CMI response to the investigational RSV vaccine, pre-vaccination (Screening), post-Dose 1 (Day 30) and post-Dose 2 (Day 60 and Day 365).
- CD3+/CD4+ T-cells expressing at least two markers among CD40L, IL-2, TNF-α, and IFN-γ upon stimulation with F, N and M2-1 peptide pools.
- Humoral response to the investigational RSV vaccine, pre-vaccination (Screening),post-Dose 1 (Day 30) and post-Dose 2 (Day 60 and Day 365):
- Neutralizing antibody titers against RSV-A.
- RSV F antibody concentrations.
- Humoral response to the investigational RSV vaccine, pre-vaccination (Screening), post-Dose 1 (Day 30) and post-Dose 2 (Day 60):
- Palivizumab-competing antibody concentrations. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1. From study start (Day 0) up to study conclusion (Day 730).
2. From Dose 1 administration (Day 0) up to study conclusion (Day 730).
3. From Dose 1 administration (Day 0) up to study conclusion (Day 730).
4. Pre-vaccination (Screening), post-Dose 1 (Day 30) and post-Dose 2 (Day 60 and Day 365).
5. Pre-vaccination (Screening), post-Dose 1 (Day 30) and post-Dose 2 (Day 60 and Day 365).
6. Pre-vaccination (Screening), post-Dose 1 (Day 30) and post-Dose 2 (Day 60). |
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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 | Yes |
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) | Yes |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | Yes |
E.7.1.3.1 | Other trial type description |
First administration to infants following a first study in human performed on adults. |
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E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
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 | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 6 |
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 | 11 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Canada |
Hong Kong |
Italy |
Mexico |
Panama |
Poland |
Russian Federation |
Spain |
Taiwan |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
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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Last testing results released of samples collected at Day 730. |
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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 | 2 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 5 |
E.8.9.2 | In all countries concerned by the trial days | 6 |