A/H5N1 Virus-Like Particle Antigen Dose Ranging Study With Adjuvant 1

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the immunogenicity and safety profile of the Avian flu vaccine with and without adjuvant 1 in healthy, young adults. The study is divided down into Parts A1, A2 and B. Groups within each Part will receive two doses of the assigned test article on Study Days 0 and 21. There will be a Safety Monitoring Committee assessment following Day 7 for each part, prior to allowing vaccination of subjects in subsequent Parts of the study.

Official Title
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A Phase 1 Randomized, Observer-Blinded, Dose-Ranging Study to Evaluate the Immunogenicity and Safety of Monovalent A/Indonesia/05/05 (H5N1) Virus-Like Particle (VLP) Avian Influenza Antigen (Recombinant) in Healthy Young Adults With and Without Adjuvant 1.

Conditions
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Influenza (Pandemic)

Intervention / Treatment
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* Biological: Monovalent Avian Influenza VLP (H5N1)
* Biological: Monovalent Avian Influenza VLP (H5N1)
* Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant
* Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant
* Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant
* Biological: Saline placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy adult male or female, ≥18 and ≤49 years of age, Willing and able to give informed consent prior to study enrollment, Able to comply with study requirements, and Women must have a negative urine pregnancy test prior to each vaccination; will be advised through the Informed Consent process to avoid becoming pregnant over the duration of the study, and must assert that they will employ an effective form of birth control for the duration of the study. Acceptable forms of birth control are: credible history of continuous abstinence from heterosexual activity or prior surgical sterilization, hormonal contraceptives (oral, injectable, implant, patch, ring), double-barrier contraceptives (condom or diaphragm, with spermicide), and intrauterine device (IUD). Exclusion Criteria: Any ongoing, symptomatic acute or chronic illness requiring medical or surgical care. Asymptomatic conditions (e.g., hypertension, dyslipidemia) that are being managed medically and that are not associated with evidence of end-organ damage are not exclusionary provided they are clinically stable (defined as no unscheduled medical interventions or change in medications for cause within 3 months). Any history of jaundice, or of hepatic injury due to drug (prescription, OTC, or illicit) or alcohol use or viral hepatitis; or the presence of hepatitis B surface antigen or hepatitis C antibody at screening. Any grade 1 or higher (as based on the Toxicity Grading Scale [TGS]) abnormality in ALT, AST, alkaline phosphatase or total bilirubin levels. Any grade 2 or higher (as based on the TGS) vital sign or clinical laboratory abnormality not specified in criterion 3 above. Note that any abnormal vital sign may be repeated at the Investigator's discretion. Participation in research involving investigational product (drug / biologic / device) within 45 days before planned date of first vaccination. History of a serious reaction to prior influenza vaccination. History of Guillain-Barré Syndrome (GBS) within 6 weeks following a previous influenza vaccine. Received any vaccine in the 4 weeks preceding the study vaccination; or any A/H5N1 avian influenza vaccine at any time. Any known or suspected immunosuppressive condition, acquired or congenital, including HIV infection as determined by history and/or physical examination. Chronic administration (defined as more than 14 continuous days) of immunosuppressants or other immune-modifying drugs within 6 months prior to the administration of the study vaccine. An immunosuppressant dose of glucocorticoid will be defined as a systemic dose ≥10 mg of prednisone per day or equivalent. The use of topical, inhaled, and nasal glucocorticoids will be permitted. Administration of immunoglobulins and/or any blood products within the 3 months preceding the administration of the study vaccine or during the study. Acute disease at the time of enrollment (defined as the presence of a moderate or severe illness with or without fever, or an oral temperature >38.0°C on the planned day of vaccine administration). Known disturbance of coagulation. Women who are pregnant or breastfeeding, or plan to become pregnant during the study. Suspicion or recent history (within one year of planned vaccination) of alcohol or other substance abuse. Any condition that in the opinion of the investigator would pose a health risk to the subject if enrolled or could interfere with evaluation of the vaccine or interpretation of study results (including neurologic or psychiatric conditions deemed likely to impair the quality of safety reporting).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 49 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group A<br> | Biological: Monovalent Avian Influenza VLP (H5N1)<br>* Dose A without Adjuvant 1; intramuscular, deltoid, Day 0 & Day 21<br>|
| Experimental: Group B<br> | Biological: Monovalent Avian Influenza VLP (H5N1)<br>* Dose B without Adjuvant 1; intramuscular, deltoid, Day 0 & Day 21<br>|
| Experimental: Group C<br> | Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant<br>* Dose B with Adjuvant 1; intramuscular, deltoid, Day 0 & Day 21<br>|
| Experimental: Group D<br> | Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant<br>* Dose C with Adjuvant 1; intramuscular, deltoid, Day 0 & Day 21<br>|
| Experimental: Group E<br> | Biological: Monovalent Avian Influenza VLP (H5N1); Adjuvant<br>* Dose D with Adjuvant 1; intramuscular, deltoid, Day 0 & Day 21<br>|
| Experimental: Group F<br> | Biological: Saline placebo<br>* Placebo; Intramuscular, deltoid, Day 0 & Day 21<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of solicited and unsolicited adverse events in H5N1 VLP antigen dose groups delivering HA with/without Adjuvant 1. |  | Day 42 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Measurement of HAI antibody seroconversion rates and GMT achieved by a constant H5N1 VLP antigen dose alone and in combination with Adjuvant 1. |  | Day 42 |