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AVA

Phase 1

Anthrax Infection | Monoclonal antibody | Other |Emergent BioSolutions Inc.|Last Updated: Mar 18, 2024

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_CONTROLLEDDMC
Total Trials1
Total Enrollment120
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT01979406A Phase 1 Ascending Dose Study to Assess the Safety and Immunogenicity of Adenovirus Anthrax Vector Candidate VaccinesPHASE1 COMPLETED 120Nov 1, 2013Sep 1, 2015Mar 18, 20244 United States
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Study Endpoints
Primary Endpoints
The safety, tolerability and immunogenicity of the Ad4 PA and Ad4 PA GPI vaccines across a range of dosages and schedules.
Day 1 through Day 211

Safety will be measured by looking at safety labs, Adverse Events (AEs) and vaccine reactogenicity data from Baseline through Day 211. Immunogenicity will be measured by the peak serum antibody response to the PA transgene defined as the highest toxin-neutralizing antibody (TNA) titer achieved by a subject at any time between the first post-vaccination visit though Day 85 (and Day 211 if Day 85 is positive).

Secondary Endpoints
Antibody response of the Ad4-PA formulation to Ad4 PA GPI
Day 1 through Day 85 (Day 211 if Day 85 is positive)
Antibody response of the Ad4-PA and Ad4-PA-GPI vaccination regimens to the anticipated AVA PEP regimen.
Days 1 through 85 (Day 211 if Day 85 is positive)
Antibody response induced by 3 different dosages of Ad4 PA and Ad4 PA GPI.
Days 1 through 85 (Day 211 if Day 85 is positive)
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelFACTORIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
AVAACTIVE_COMPARATORAnthrax Vaccine Adsorbed (0.5 mL) as the placebo control on Days 1, 15 and 29
Ad4-PA-1EXPERIMENTALGiven at 10\^9, 10\^10 and 10\^11 vp Ad4-PA at Day 1 + oral placebo on Day 15 + AVA boost at Day 29
Ad4-PA-2EXPERIMENTALGiven at 10\^9, 10\^10 and 10\^11 vp Ad4-PA at Days 1, 15 and 29
Ad4-PA-3EXPERIMENTALAd4 given at 10\^9, 10\^10 and 10\^11 vp Ad4 PA-GPI at Day 1 + AVA boost at Day 15 + placebo on Day 29
Ad4-PA-GPI-1EXPERIMENTALGiven at 10\^9, 10\^10 and 10\^11 viral particles Ad4 PA-GPI at Day 1 + oral placebo on Day 29 + AVA boost at Day 15
Ad4 PA-GPI-2EXPERIMENTALGiven at 10\^9, 10\^10 and 10\^11 viral particles Ad4 PA-GPI at Day 1 + placebo on Day 15 + AVA boost at Day 29
Ad4-PA-GPI -3EXPERIMENTALGiven at 10\^9, 10\^10 and 10\^11 viral particles Ad4-PA-GPI at Days 1, 15 and 29
Interventions
NameTypeDescription
AVABIOLOGICALAnthrax Vaccine Adsorbed (0.5 mL) as the placebo control on Days 1, 15 and 29
Ad4-PA-1BIOLOGICALAd4-PA will be given at 10\^9, 10\^10 and 10\^11 on Day, followed by an oral placebo on Day 15 and an AVA boost on Day 29
Ad4-PA-GPI-1BIOLOGICALGiven at 10\^9, 10\^10 and 10\^11 viral particles Ad4 PA-GPI at Day 1 + oral placebo on Day 29 + AVA boost at Day 15
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Eligibility Criteria
Age Range18 Years — 40 Years
SexALL
Healthy VolunteersYes
Study Sites4

Inclusion Criteria: * Able to understand the study and give written informed consent. * Healthy men or women aged 18-40 years old, * BMI between 18 to 36 kg/m2 * Women of child bearing potential must have a negative serum pregnancy test at screening and a negative urine pregnancy test prior to vacc...

Countries:United States
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