- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02492165
Study of a Single Primary Dose Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®) in Healthy Subjects
Immunogenicity and Safety of a Single Primary Dose of a Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®) Given to Healthy Subjects in Vietnam
The purpose of this study is to describe the immunogenicity and safety of IMOJEV® in adult and pediatric populations in Vietnam and serve a bridging study to compare immunogenicity, reactogenicity, and safety data obtained with IMOJEV® in the Vietnamese population with data from other Asian pediatric populations.
Primary objective:
- To describe the safety profile of a single dose of IMOJEV®.
Secondary objectives:
- To evaluate the immune response to JE 28 days after the administration of a single dose of IMOJEV® in healthy Vietnamese subjects aged from 9 months to 60 years.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
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Hoa Binh, Vietnam
- Preventive Medicine Centre of Hoa Binh Province
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Aged 9 months through 60 years on the day of inclusion.
- For adults: Informed consent form has been signed and dated by the subject. For minors: Informed consent form has been signed and dated by the parent or legally acceptable representative. In addition, in accordance with the Institution Ethics Committee / Institution Review Board requirements and as appropriate for the age of the subject, the subject may be required to sign and date the informed consent form if aged 12 to 17 years or assent form if aged 8 to 11 years.
- Subject and parent(s)/legally acceptable representative(s) are able to attend all scheduled visits and comply with all study procedures.
Exclusion Criteria:
- Subject is pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be pre-menarche, or post-menopausal for at least 1 year, or surgically sterile, or using an effective method of contraception or abstinence from at least 4 weeks prior to vaccination until at least 4 weeks after vaccination).
- Participation at the time of study enrollment (or in the 4 weeks preceding the study vaccination) or planned participation during the present study period in another clinical study investigating a vaccine, drug, medical device, or a medical procedure.
- Receipt of any vaccine in the 4 weeks preceding the study vaccination or planned receipt of any vaccine in the 4 weeks following the study vaccination, except for inactivated influenza vaccination, which may be received at least 2 weeks before the study vaccine
- Previous vaccination against flavivirus disease, including Japanese Encephalitis (JE), dengue, and yellow fever.
- Receipt of immune globulins, blood, or blood-derived products in the past 3 months that might interfere with the assessment of the immune response.
- Known or suspected congenital or acquired immunodeficiency, or receipt of immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months, or long-term systemic corticosteroids therapy (for more than 2 consecutive weeks within the 4 weeks preceding vaccination).
- History of flavivirus infection (confirmed either clinically, serologically, or virologically).
- History of central nervous system disorder or disease, including seizures.
- Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine used in the study or to a vaccine containing any of the same substances.
- Known thrombocytopenia, contraindicating vaccination.
- Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating vaccination.
- Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily.
- Current alcohol abuse or drug addiction.
- Chronic illness that, in the opinion of the investigator, is at a stage where it might interfere with study conduct or completion.
- Febrile illness (temperature ≥ 38.0°C) or moderate or severe acute illness/infection on the day of vaccination, according to Investigator judgment. A prospective subject should not be included in the study until the condition has resolved or the febrile event has subsided.
- Receipt of any chronic anti-viral in the 2 months preceding the study vaccination or planned receipt of any anti-viral in the 4 weeks following the study vaccination. Short-term antiviral drugs for flu or herpes can be administered provided there is a wash-out period of 1 week before the administration of the vaccine.
- Identified as an Investigator or employee of the Investigator or study center with direct involvement in the proposed study, or identified as an immediate family member (i.e., parent, spouse, natural or adopted child) of the Investigator or employee with direct involvement in the proposed study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Age 9 Months through 4 Years Group
Participants age 9 Months through 4 Years old at enrollment
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0.5 mL, Subcutaneous
Other Names:
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Experimental: Age 5 Years through 11 Years Group
Participants age 5 Years through 11 Years old at enrollment
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0.5 mL, Subcutaneous
Other Names:
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Experimental: Age 12 Years through 17 Years Group
Participants age 12 Years through 17 Years old at enrollment
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0.5 mL, Subcutaneous
Other Names:
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Experimental: Age 18 Years through 60 Years Group
Participants age 18 Years through 60 Years old at enrollment
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0.5 mL, Subcutaneous
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants With Solicited Injection Site Reactions and Systemic Events Following a Single Primary Dose of a Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®)
Time Frame: Day 0 up to Day 14 post-vaccination
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Solicited injection-site: ≤ 23 months age: Tenderness, Erythema, and Swelling. For ≥ 2 years age: Pain, Erythema, and Swelling. Solicited systemic reactions: ≤ 23 months age, Fever (temperature) Vomiting, Crying abnormal, Drowsiness, Appetite loss, Irritability, For ≥ 2 years age, Fever (temperature) Headache, Malaise, and Myalgia. Grade 3: Tenderness, Cries when injected limb is moved; Pain, Incapacitating, unable to perform usual activities or Significant; prevents daily activity (≥ 12 years); Erythema and Swelling (≤23 months to 11 years), ≥50 mm or >100 mm (≥ 12 years). Grade 3 Fever, > 39.5°C (≤ 23 months) or ≥39.0°C (≥ 2 years); Vomiting, ≥ 6 episodes per 24 hours; Crying abnormal, > 3 hours; Drowsiness, Sleeping most of the time; Appetite loss, Refuses ≥ 3 feeds / meals; Irritability, Inconsolable. Headache, Malaise, and Myalgia, Significant; prevents daily activity. |
Day 0 up to Day 14 post-vaccination
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Percentage of Participants With Japanese Encephalitis Seroprotection Following a Single Primary Dose of a Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®)
Time Frame: Day 0 (pre-vaccination) and Day 28 post-vaccination
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Neutralizing antibodies were measured using a Japanese encephalitis chimeric virus (JE CV) 50% plaque reduction neutralization test (PRNT50).
Seroprotection was defined as antibody titer levels ≥10 (1/dil).
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Day 0 (pre-vaccination) and Day 28 post-vaccination
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Percentage of Participants With Japanese Encephalitis Seroconversion Following a Single Primary Dose of a Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®)
Time Frame: Day 0 (pre-vaccination) and Day 28 post-vaccination
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Neutralizing antibodies were measured using a Japanese encephalitis chimeric virus (JE CV) 50% plaque reduction neutralization test (PRNT50).
Seroconversion was defined as participants with a pre-vaccination titer <10 (1/dil) and post-vaccination titer ≥10 (1/dil) or participants with pre vaccination titer ≥10 (1/dil) and a ≥4-fold increase from pre- to post-vaccination.
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Day 0 (pre-vaccination) and Day 28 post-vaccination
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Summary of Geometric Mean Titers of Japanese Encephalitis Antibodies Following a Single Primary Dose of a Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine (IMOJEV®)
Time Frame: Day 0 (pre-vaccination) and Day 28 post-vaccination
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Neutralizing antibodies were measured using a Japanese encephalitis chimeric virus (JE CV) 50% plaque reduction neutralization test (PRNT50).
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Day 0 (pre-vaccination) and Day 28 post-vaccination
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Collaborators and Investigators
Sponsor
Collaborators
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Brain Diseases
- Central Nervous System Diseases
- Nervous System Diseases
- RNA Virus Infections
- Virus Diseases
- Infections
- Encephalitis, Arbovirus
- Encephalitis, Viral
- Central Nervous System Viral Diseases
- Central Nervous System Infections
- Infectious Encephalitis
- Arbovirus Infections
- Vector Borne Diseases
- Flavivirus Infections
- Flaviviridae Infections
- Encephalitis, Japanese
- Encephalitis
- Physiological Effects of Drugs
- Immunologic Factors
- Vaccines
Other Study ID Numbers
- JEC13
- U1111-1143-8142 (Other Identifier: WHO)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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