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V520

Phase 1

HIV-1 Infection | Monoclonal antibody | Infectious Disease |Merck & Company, Inc.|Last Updated: May 28, 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
RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials1
Total Enrollment250
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00894114A Study of Safety, Tolerability and Immunogenicity of a 1-Dose Regimen of MRKAd5 HIV-1 Gag Vaccine Versus the ALVAC_HIV Vaccine (V520-019)PHASE1 COMPLETED 250May 1, 2003Jun 1, 2009May 28, 2015 -
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Study Endpoints
Primary Endpoints
Safety and tolerability of ALVAC-HIV or MRKAd5 HIV-1 vaccine in subjects who previously received a 3-dose regimen of Ad5 HIV-1 gag vaccine measured by number of injection-site adverse experiences (AE), non serious systemic AE, lab AE, serious AE.
Injection-site AE up to 5 days after vaccination, non-serious systemic AE and Lab AE up to 29 days after vaccination, serious AE for the entire study period (Week 260).
Secondary Endpoints
immunogenicity of a single-dose regimen of the ALVAC-HIV vaccine or MRKAd5 HIV-1 vaccine measured by various assays
4 weeks following vaccination
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Stratum 1OTHERPlacebo recipients in the parent protocol (Merck V520 Protocols 007 or 012) will receive ALVAC-HIV Vaccine
Stratum 2EXPERIMENTALNonresponders who received active vaccine in parent protocol will be randomized to receive ALVAC-HIV vaccine or MRKAd5 HIV-1 gag vaccine
Stratum 3EXPERIMENTALLow responders who received active vaccine in the parent protocol will be randomized to receive ALVAC-HIV vaccine or MRKAd5 HIV-1 gag vaccine
Stratum 4EXPERIMENTALHigh responders who received active vaccine in the parent protocol will be randomized to receive ALVAC-HIV vaccine or MRKAd5 HIV-1 gag vaccine
Interventions
NameTypeDescription
V520BIOLOGICALMRKAd5 HIV-1 gag vaccine, a single dose 1.0 mL intramuscular injection
Comparator: ALVAC-HIV vaccineBIOLOGICALA single dose 0.1 intramuscular injection
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersYes

Inclusion Criteria: * Subject was previously enrolled in Merck HIV Vaccine study V520 Protocol 007 or 012, and received the complete 3-dose regimen during participation * Subject is in good general health * Subject is not infected with HIV * Subject agrees not to donate blood during the first 52 we...

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