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Japanese encephalitis vaccine

Phase 3

Japanese Encephalitis | Monoclonal antibody | Infectious Disease |Sanofi|Last Updated: Apr 21, 2015

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment1,200
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00735644Study of ChimeriVax™-Japanese Encephalitis Vaccine in Toddlers in Thailand and the PhilippinesPHASE3 COMPLETED 1,200Aug 1, 2008Aug 1, 2009Apr 21, 20158 Philippines, Thailand
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Study Endpoints
Primary Endpoints
Number of Participants With Seroconversion to Vaccine Antigens Following Vaccination With JE-CV by GPO MBP Lots
Day 0 (pre-vaccination) and Day 28 post-vaccination

Anti-Japanese encephalitis chimeric virus vaccine antibodies were measured using the 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 4-fold increase from pre- to post-vaccination.

Secondary Endpoints
Geometric Mean Titers Against the Japanese Encephalitis Chimeric Virus Vaccine (JE-CV) Antigens Before and Following Vaccination With a JE-CV by GPO MBP Lot or Walter Reed Army Institute of Research (WRAIR) JE-CV
Day 0 (pre-vaccination) and Day 28 post-vaccination
Number of Participants With Seroprotection to Japanese Encephalitis Chimeric Virus Antigens Before and Following Vaccination With a JE-CV by GPO MBP Lot or WRAIR JE-CV
Day 0 (pre-vaccination) and Day 28 post-vaccination
Geometric Mean Titers Ratios Against the Japanese Encephalitis Chimeric Virus (JE-CV) Antigen Following Vaccination With One of the JE-CV by GPO MBP Lots or WRAIR JE-CV Vaccine
Day 0 (pre-vaccination) and Day 28 post-vaccination
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Study Design & Arms
AllocationRANDOMIZED
MaskingSINGLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
JE-CV GPO MBP (Lot 1)EXPERIMENTALParticipants 12 to 18 months of age received one dose of Japanese encephalitis chimeric virus vaccine (JE-CV) from Government Pharmaceutical Organization Mérieux Biological Products (GPO-MBP) Lot 1.
JE-CV GPO MBP (Lot 2)EXPERIMENTALParticipants 12 to 18 months of age received one dose of Japanese encephalitis chimeric virus vaccine (JE-CV) from Government Pharmaceutical Organization Mérieux Biological Products (GPO-MBP) Lot 2.
JE-CV GPO MBP (Lot 3)EXPERIMENTALParticipants 12 to 18 months of age received one dose of Japanese encephalitis chimeric virus vaccine (JE-CV) from Government Pharmaceutical Organization Mérieux Biological Products (GPO-MBP) Lot 3.
JE-CV WRAIR (Group 4)ACTIVE_COMPARATORParticipants 12 to 18 months of age received one dose of JE-CV from Acambis at Walter Reed Army Institute of Research (WRAIR)
Hepatitis A (Group 5)SHAM_COMPARATORParticipants 12 to 18 months of age randomized to receive Hepatitis A vaccine
Interventions
NameTypeDescription
Japanese encephalitis vaccineBIOLOGICAL0.5 mL, Subcutaneous
Japanese encephalitis vaccine (Acambis)BIOLOGICAL0.5 mL, Subcutaneous
Hepatitis A vaccineBIOLOGICAL0.5 mL, Intramuscular
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Eligibility Criteria
Age Range12 Months — 18 Months
SexALL
Healthy VolunteersYes
Study Sites8

Inclusion Criteria : * Aged 12 to 18 months on the day of inclusion. * In good general health, without significant medical history. * Provision of informed consent form signed by at least one parent or other legally acceptable representative, and by at least one independent witness if required by l...

Countries:PhilippinesThailand
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