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MRKAd5 HIV-1 gag vaccine

Phase 1

Hepatitis C | Monoclonal antibody | Infectious Disease |Merck & Company, Inc.|Last Updated: Aug 25, 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-BlindSHAM_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment17
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00857311MRKAd5 HIV-1 Gag Vaccine (V520) in Subjects With Chronic Hepatitis C (V520-022) (COMPLETED)PHASE1 COMPLETED 17May 1, 2004May 1, 2010Aug 25, 2015 -
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Study Endpoints
Primary Endpoints
Number of Participants With Vaccine-related Clinical (Systemic and Injection-site), and Laboratory Adverse Events (AE)
up to Week 78 (52 weeks after boost injection) for systemic AEs, 29 days after any dose for laboratory AEs, and 5 days after any dose for injection-site AEs

Serious and non serious clinical (systemic and injection-site AEs), and laboratory AEs were collected. Systemic and laboratory AEs reflect any unfavorable \& unintended change in the structure, function, or chemistry of the body. Injection-site AEs include any swelling, redness, pain or tenderness at the injection site. Vaccine-related AEs are those determined by the investigator to be possibly, probably, or definitely related to the administration of the vaccine.

Secondary Endpoints
Number of Participants With Systemic and Laboratory Adverse Events (AE)
up to Week 260 (234 weeks after boost injection) for systemic AEs, 29 days after any dose for laboratory AEs, and 5 days after any dose for injection-site AEs
Immune Response by Levels of Unfractionated Gag-specific IFN-gamma Following a 3-dose Vaccine Regimen
Week 30 (4 weeks after boost injection)
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
MRKAd5 HIV-1 gag vaccine 1x10^9 vp/doseEXPERIMENTALParticipants administered MRKAd5 HIV-1 gag vaccine 1x10\^9 viral particles (vp)/dose (V520), on Day 1, Week 4, and Week 26.
MRKAd5 HIV-1 gag vaccine 1x10^10 vp/doseEXPERIMENTALParticipants were to be administered MRKAd5 HIV-1 gag 1x10\^10 vp/dose (V520) on Day 1, Week 4, and Week 26. Per a letter dated 30-Aug-2005 all sites were notified that due to recruitment challenges enrollment would be halted as of 01-Oct-2005. Consequently, no participants were enrolled in the group MRKAd5 HIV-1 gag 1x10\^10 vp/dose.
PlaceboEXPERIMENTALParticipants administered placebo to MRKAd5 HIV-1 gag vaccine (V520) on Day 1, Week 4, and Week 26.
Open Label Tetanus and Diptheria Toxoids AdsorbedSHAM_COMPARATORParticipants were to be administered open label tetanus and diptheria toxoids adsorbed (Td) at Day 1 only. Per a letter dated 30-Aug-2005 all sites were notified that due to recruitment challenges enrollment would be halted as of 01-Oct-2005. Consequently, no participants were enrolled in this group.
Interventions
NameTypeDescription
MRKAd5 HIV-1 gag vaccine (V520)BIOLOGICAL3-dose prime boosting regimen of 1.0-mL intramuscular injections of 1x10\^9 viral particles/dose of MRKAd5 HIV-1 gag vaccine (V520) at Day 1 and Weeks 4 and 26
Comparator: PlaceboBIOLOGICAL1.0 mL intramuscular injection of Placebo at Day 1 and Weeks 4 and 26
Comparator: Open Label Tetanus and Diptheria Toxoids AdsorbedBIOLOGICAL0.5 mL Open Label Tetanus and Diptheria Toxoids Adsorbed (Td) intramuscular injection at Day 1 only
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Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Subject who is of reproductive potential agrees to use a acceptable method of birth control through week 52 of the study Exclusion Criteria: * Subject weighs less than 110 lbs. * Subject has received treatment for hepatitis C virus infection in the 3 months before enrollment...

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Competitive Landscape -Hepatitis C 11 trials