Safety Study of ChimeriVax™-JE Vaccine to Prevent Japanese Encephalitis.

Study Overview
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Brief Summary
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The purpose of this study is to assess whether ChimeriVax™ JE vaccine (a new vaccine to be used for vaccination against Japanese encephalitis) is safe and well tolerated when compared to placebo (dummy) vaccination.

Official Title
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Randomised, Double Blind, Multicentre, Placebo Controlled Phase III Study of the Safety and Tolerability Following Administration of Live Attenuated JE Vaccine (ChimeriVax™-JE)

Conditions
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Encephalitis, Japanese Encephalitis

Intervention / Treatment
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* Biological: ChimeriVax-JE, Japanese Encephalitis vaccine
* Biological: 0.9% Saline


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Informed consent obtained from the subject. Aged 18 years or above at screening. In good general health Subject available for the study duration For female subjects (of child bearing potential) a negative pregnancy tests at Screening and Day 0. Exclusion Criteria: A history of vaccination against or infection with JE. Known or suspected immunodeficiency, use of immunosuppressive or antineoplastic drugs. History of thymoma, thymic surgery (removal) or myasthenia gravis. Clinically significant abnormalities on laboratory assessment Anaphylaxis or other serious adverse reactions characterised by urticaria or angioedema to foods, Hymenoptera (bee family) stings, or drugs including vaccines). Transfusion of blood or treatment with any blood product, including intramuscular or intravenous serum globulin within six months of the Screening Visit or up to Day 30. Administration of another vaccine or antiviral within 30 days preceding the Screening visit or up to Day 30. Physical examination indicating any clinically significant medical condition. Oral temperature >38°C (100.4°F) or acute illness within 3 days prior to inoculation. Intention to travel out of the area for an extended period that may affect the subjects ability to attend clinic visits prior to the study visit up to Day 30. Seropositive to hepatitis C virus (HCV) or HIV or positive for Hepatitis B Surface Antigen. Lactation or intended pregnancy in female subjects. Excessive alcohol consumption, drug abuse, significant psychiatric illness. A known or suspected physiological or structural condition that compromises the integrity of the blood-brain barrier (e.g. cerebrovascular disease, multiple sclerosis, trauma, infection, inflammation of the brain or meninges). Participation in another clinical study within 30 days of the screening visit for this study. Employee of the study site, Sponsor or Clinical Research Organization (CRO) involved with the management of the study. Any other reasons, which in the investigator's opinion, makes the subject unsuitable to participate in the study.

Ages Eligible for Study
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Minimum Age: 18 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: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Placebo Comparator: Placebo<br>All subjects received a single injection of placebo on Day 0. | Biological: 0.9% Saline<br>* 0.5 mL, Subcutaneous<br>|
| Experimental: ChimeriVax™ JE 4 log10 PFU Vaccine<br>All participants received a single injection of ChimeriVax™ JE 4 log10 Plaque-forming unit (PFU) Vaccine on Day 0. | Biological: ChimeriVax-JE, Japanese Encephalitis vaccine<br>* 0.5 mL, Subcutaneous<br>* Other names: ChimeriVax™;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants Reporting Treatment Related Adverse Events Post Vaccination With Either ChimeriVax™-JE or a Placebo | Adverse events were collected by means of diary cards and scripted interviews. All adverse events reporting was considered actively solicited through Day 30. | Day 0 up to 30 days post-vaccination | 
| Number of Participants Reporting Treatment Emergent Local Adverse Reactions and Treatment Emergent Systemic Reactions Post-vaccination With Either ChimeriVax™-JE or a Placebo | Treatment emergent local adverse reactions: Injection Site Pain, Itching, Erythema, Swelling, Induration, Skin Rash, and others as reported. Treatment emergent systemic reactions: Malaise, Headache, Myalgia, Feeling Hot, Chills, Fatigue, Dyspnea, Wheezing, Nausea, Vomiting, Diarrhea, Abdominal Pain and others as reported. | Day 0 up to 30 days post-vaccination | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Japanese Encephalitis, Encephalitis virus, ChimeriVax™-JE Vaccine