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Purified vero rabies vaccine - serum free VRVg-2

Phase 3

Rabies (Healthy Volunteers) | Monoclonal antibody | Other |Sanofi|Last Updated: Sep 19, 2025

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
RandomizedDouble-BlindACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment403
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04478084Study of Purified Vero Rabies Vaccine Compared With a Reference Rabies Vaccine as Simulated Rabies Post-Exposure Prophylaxis in Adult and Pediatric Population in ThaïlandPHASE3 COMPLETED 403Aug 4, 2020Jul 21, 2022Sep 19, 20253 Thailand
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Study Endpoints
Primary Endpoints
Percentage of participants in Group 1, Group 2, Group 5 and Group 6 achieving rabies virus neutralizing antibody (RVNA) titer greater than or equal to (≥) 0.5 IU/mL
Day 14 (post-vaccination)

RVNA titers will be measured by rapid fluorescent focus inhibition test (RFFIT)

Percentage of participants in Group 1, Group 2, Group 5 and Group 6 achieving RVNA titer greater than or equal to (≥) 0.5 IU/mL
Day 42 (post-vaccination)

RVNA titers will be measured by RFFIT

Number of Participants in Group 1, Group 2, Group 5 and Group 6 achieving RVNA titer greater than or equal to (≥) lower limit of quantification
Day 14 (post-vaccination)

RVNA titers will be measured by RFFIT Lower limit of quantification for RFFIT assay is 0.2 IU/mL

Geometric Mean Titer Ratio (GMTR) of individual RVNA titer: (post-/pre-vaccination) in Group 1, Group 2, Group 5 and Group 6 Participants
Day 14 (post-vaccination)

RVNA titers against rabies virus will be measured by RFFIT at Day 0 and Day 14 RVNA ratios Day14/Day0 will be calculated

Secondary Endpoints
Number of participants reporting immediate adverse events (AEs)
Within 30 minutes post-vaccination
Percentage of participants reporting solicited injection site reactions
Within 7 days post-vaccination
Percentage of participants reporting solicited systemic reactions
Between Day 0 and Day 3, between Day 3 and Day 7, and during the 7 days following the remaining vaccinations
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Group 1: pediatric participants; VRVg-2EXPERIMENTALVRVg-2 8 injections: 2 at Day 0, 2 at Day 3, 2 at Day 7, and 2 at Day 28
Group 2: pediatric participants; VerorabACTIVE_COMPARATORVerorab 8 injections: 2 at Day 0, 2 at Day 3, 2 at Day 7, and 2 at Day 28
Group 3: adult participants; VRVG-2 + ERIGEXPERIMENTALVRVg-2 8 injections: 2 at Day 0, 2 at Day 3 and 2 at Day 7 \+ ERIG at D0
Group 4: adult participants; Verorab + ERIGACTIVE_COMPARATORVerorab 8 injections: 2 at Day 0, 2 at Day 3 and 2 at Day 7 \+ ERIG at D0
Group 5: adult participants; VRVG-2 + HRIGEXPERIMENTALVRVg-2 8 injections: 2 at Day 0, 2 at Day 3, 2 at Day 7, and 2 at Day 28 \+ HRIG at D0
Group 6: adult participants; Verorab + HRIGACTIVE_COMPARATORVerorab 8 injections: 2 at Day 0, 2 at Day 3, 2 at Day 7, and 2 at Day 28 \+ HRIG at D0
Interventions
NameTypeDescription
Purified vero rabies vaccine - serum free VRVg-2BIOLOGICALPharmaceutical form:freeze-dried Route of administration: intradermal
Purified inactivated rabies vaccineBIOLOGICALPharmaceutical form:freeze-dried Route of administration: intradermal
Equine rabies immunoglobulins (ERIG) (only Group 3 and Group 4)BIOLOGICALPharmaceutical form: liquid/solution in 5 mL vials Route of administration: intramuscular
Human rabies immunoglobulins (HRIG) (only Group 5 and Group 6)BIOLOGICALPharmaceutical form: liquid/solution in 2 mL vials Route of administration: intramuscular
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Eligibility Criteria
Age Range1 Year — N/A
SexALL
Healthy VolunteersYes
Study Sites3

Inclusion Criteria: Inclusion criteria : * Aged ≥ 1 year on the day of inclusion * Participant (adult ≥ 18 years without upper age limit) or participant and participant's parent/LAR (child ≥ 1 to \< 18 years) are able to attend all scheduled visits and to comply with all study procedures The foll...

Countries:Thailand
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