E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Prevention of gastroenteritis caused by norovirus |
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E.1.1.1 | Medical condition in easily understood language |
Prevention of gastroenteritis caused by norovirus |
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E.1.1.2 | Therapeutic area | Body processes [G] - Immune system processes [G12] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 16.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10068189 |
E.1.2 | Term | Gastroenteritis norovirus |
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 select the optimal formulation of the investigational vaccine from different concentrations of VLP and MPL adjuvant for further development:
- By assessing the seroresponse rate (≥4-fold rise) of serum anti-norovirus GI.1 VLP and GII.4 VLP antibody titers by Pan-Ig enzyme-linked immunosorbent assay (ELISA) at Day 56.
- By assessing the safety profile of different formulations of the investigational vaccine as measured by solicited local and systemic adverse events (AEs) for the period of 7 days after each vaccination (including the day of vaccination) and as measured by the occurrence of unsolicited AEs 28 days after each vaccination and Serious Adverse Events (SAEs) throughout the trial. |
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E.2.2 | Secondary objectives of the trial |
To evaluate:
GMT & GMFR of anti-norovirus GI.1 VLP and GII.4 VLP AB titers Percentage of subjects with 4-fold rise or > of serum anti-norovirus GI.1 VLP and/or GII.4 VLP AB titers.
GMT and GMFR of anti-norovirus GI.1 VLP and GII.4 VLP AB titers
Percentage of subjects with a 4-fold rise or > of serum anti-norovirus GI.1 VLP and/or GII.4 VLP AB titers
BT50 & GMFR of serum anti-norovirus AB titers for GI.1 VLP and GII.4 VLP as measured by the HBGA binding assay at Day 28, 56, 208 & 393.
Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP and/or GII.4 VLP AB blocking titers
BT50 and GMFR of serum anti-norovirus AB titers of a panel of GI.1 and GII.4 not represented in the vaccine
To assess safety by the occurrence of Significant New Medical Conditions and unsolicited AEs leading to subject's withdrawal from the trial throughout the trial. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Male and female subjects between 17 and 64 years of age at the time of enrollment.
- Subjects who are in good health at the time of entry into the trial as determined by medical history, physical examination (including vital signs), and clinical judgment of the investigator.
- The subject or, when applicable, the subject’s legally acceptable representative signs and dates a written, informed consent form (and assent form in the case of adolescents) and any required privacy authorization prior to the initiation of any trial procedures, after the nature of the trial has been explained according to local regulatory requirements.
- Subjects who can comply with trial procedures and are available for the duration of the trial. |
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E.4 | Principal exclusion criteria |
- Subjects who have received any vaccination that included Hepatitis A vaccine within the last 5 years.
- Subjects with known hypersensitivity to any of the vaccine components.
- Subjects with contraindications, warnings, and/or precautions to vaccinations with Havrix.
- Subjects with known or suspected impairment/alteration of immune function.
- Female subjects who are pregnant or breastfeeding |
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E.5 End points |
E.5.1 | Primary end point(s) |
Immunogenicity
Seroresponse rate, defined as percentage of subjects with a 4-fold rise or greater in serum anti-norovirus antibody titers for both GI.1 VLP and GII.4 VLP as measured by Pan-Ig ELISA at Day 56.
Safety
- Percentage of subjects with solicited local AEs at injection site: pain, erythema, induration, and swelling for 7 days after each vaccination (including the day of vaccination).
-Percentage of subjects with solicited systemic AEs - headache, fatigue, myalgia, arthralgia, vomiting, and diarrhea for 7 days after each vaccination (including the day of vaccination).
- Oral body temperature for 7 days after each vaccination (including the day of vaccination).
- Percentage of subjects with any unsolicited AEs - From Day 1 (postvaccination) through Day 56 (28 days after the second vaccination) inclusive.
- Percentage of subjects with SAEs throughout the trial. |
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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) |
The secondary endpoints for this trial are as follows (note that immunogenicity analyses at Day 28 apply only to the 2 dose groups):
Immunogenicity
Pan-Ig ELISA
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP and GII.4 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GII.4 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMT of anti-norovirus GI.1 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMT of anti-norovirus GII.4 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMFR of anti-norovirus GI.1 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMFR of anti-norovirus GII.4 VLP antibody titers as measured by Pan-Ig ELISA on Day 28, Day 56, Day 208, and Day 393.
IgA ELISA
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP and GII.4 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GII.4 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMT of anti-norovirus GI.1 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMT of anti-norovirus GII.4 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
GMFR of anti-norovirus GI.1 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
- GMFR of anti-norovirus GII.4 VLP antibody titers as measured by IgA ELISA on Day 28, Day 56, Day 208, and Day 393.
HBGA Binding Assay
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP and GII.4 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GI.1 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- Percentage of subjects with a 4-fold rise or greater of serum anti-norovirus GII.4 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- BT50 of anti-norovirus GI.1 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- BT50 of anti-norovirus GII.4 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- GMFR of anti-norovirus GI.1 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- GMFR of anti-norovirus GII.4 VLP antibody titers as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393.
- GMFR and BT50 of anti-norovirus antibody titers of strains not represented in the investigational vaccine as measured by HBGA binding assay on Day 28, Day 56, Day 208, and Day 393
Safety
- Percentage of subjects with Significant New Medical Conditions (AESIs and IMEs) throughout the trial.
- Percentage of subjects with any AE leading to subject’s withdrawal from the trial throughout the trial. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Day 28, Day 56, Day 208, and Day 393 |
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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 | No |
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) | 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 | 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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
Vaccine. One time adminstration only |
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E.8.2.4 | Number of treatment arms in the trial | 11 |
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 | 2 |
E.8.5 | The trial involves multiple Member States | No |
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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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 | 18 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial months | 18 |