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ACAM2000 Smallpox Vaccine

Phase 2

Smallpox | Monoclonal antibody | Infectious Disease |Emergent BioSolutions Inc.|Last Updated: Mar 18, 2024

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment357

FDA Designations

No designations recorded

Clinical trial landscape

ACAM2000 Smallpox Vaccine · 1 trial · 1 indication

Phase 2 1
NCT00053482Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated AdultsSmallpox
COMPLETED357 Analytics
PHASE2COMPLETED
Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated Adults
SmallpoxUnlock trial analytics

Study Endpoints

Primary Endpoints

The Neutralizing Antibody Response Titers Post-vaccination With ACAM2000 or Dryvax® Smallpox Vaccine
Day 30 post-vaccination

The neutralizing antibody response titers were determined by the Plaque-Reduction Neutralization Test (PRNT50)

Participants With ≥ 4-fold Increase in Plaque-Reduction Neutralization Test (PRNT50) Titers Post-vaccination With ACAM2000 or Dryvax® Smallpox Vaccine.
Day 30 post-vaccination
Number of Participants Reporting Adverse Events of Severe Intensity Post-vaccination With ACAM2000 or Dryvax® Smallpox Vaccine
Days 0 to 30 post-vaccination
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Group 1: ACAM2000EXPERIMENTALParticipants will receive dose 1 of the ACAM2000 smallpox vaccine
Group 2: ACAM2000EXPERIMENTALParticipants will receive dose 2 of the ACAM2000 smallpox vaccine
Group 3: ACAM2000EXPERIMENTALParticipants will receive dose 3 of the ACAM2000 smallpox vaccine
Group 4: ACAM2000EXPERIMENTALParticipants will receive dose 4 of the ACAM2000 smallpox vaccine
Group 5: Dryvax®ACTIVE_COMPARATORParticipants will receive dose 1 of Dryvax® smallpox vaccine.

Interventions

NameTypeDescription
ACAM2000 Smallpox VaccineBIOLOGICALGroup 1 dose: 1.0x10-8th PFU/ml, Group 2 dose: 2.0x10-7th PFU/ml, Group 3 dose: 1.0x10-7th PFU/ml, Group 4 dose: 5.0x10-6th PFUL/ml
Vaccinia virus (calf lymph) smallpox vaccine: Dryvax®BIOLOGICALGroup 5 dose: 1.0x10-8th PFU/ml
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Eligibility Criteria

Age Range28 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites3

Inclusion criteria: * have a history of previous smallpox vaccination greater than 10 years previous to the date of screening and presence of a vaccination scar. * females must not be pregnant, lactating and must agree to use an effective form of birth control for the 30 days following vaccination ...

Countries:United States
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Frequently asked questions about ACAM2000 Smallpox Vaccine

What is ACAM2000 Smallpox Vaccine used for?

ACAM2000 Smallpox Vaccine is used for the prevention of smallpox, an infectious disease. It is being developed by Emergent BioSolutions Inc. and is currently in Phase 2 clinical development. The vaccine is intended for use in adults, including those previously vaccinated against smallpox.

Who makes ACAM2000 Smallpox Vaccine?

ACAM2000 Smallpox Vaccine is developed by Emergent BioSolutions Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker symbol EBS. The company is conducting clinical trials to evaluate the vaccine's safety and efficacy in preventing smallpox.

What phase is ACAM2000 Smallpox Vaccine in?

ACAM2000 Smallpox Vaccine is in Phase 2 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. One Phase 2 trial has been completed, involving 357 participants, to assess the vaccine's effects in previously vaccinated adults.

What clinical trials is ACAM2000 Smallpox Vaccine in?

ACAM2000 Smallpox Vaccine has one completed Phase 2 clinical trial registered under NCT00053482, titled 'Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated Adults.' The trial enrolled 357 participants in the United States and was a randomized, double-blind, active-controlled study involving healthy volunteers aged 28 years and older.

Is ACAM2000 Smallpox Vaccine a monoclonal antibody?

ACAM2000 Smallpox Vaccine is classified as a monoclonal antibody modality, according to its development profile. However, it is being studied as a vaccine for smallpox prevention. The ongoing clinical development focuses on its use in adults, including those with prior smallpox vaccination.