Anthrax vaccine

Identification

Summary

Anthrax vaccine is a vaccine indicated for the pre- and post-exposure prophylaxis treatment of diseases caused by exposure to Bacillus anthracis

Brand Names
Biothrax, Cyfendus
Generic Name
Anthrax vaccine
DrugBank Accession Number
DB11003
Background

Anthrax vaccine is a vaccine used for the pre- or post-exposure prophylaxis of disease in those at high risk of, suspected or confirmed exposure to Bacillus anthracis. It is subcutaneously or intramuscularly administered. It is derived from cell-free filtrates of microaerophilic cultures of an avirulent, nonencapsulated strain of Bacillus anthracis which are grown in a chemically defined protein-free medium.1 It is considered one of the most likely agents to be used in a biological attack.3

There are currently 2 anthrax vaccines approved by the FDA: BioThrax in August 15, 2016 and CYFENDUS in July 20, 2023.4,3 These vaccines are currently stored in the Strategic National Stockpile in preparation for an Anthrax terrorist attack or for pre-exposure prophylaxis of personnel going to specific arenas around the world.3

Type
Biotech
Groups
Approved
Biologic Classification
Vaccines
Other vaccines
Synonyms
  • Anthrax vaccine adsorbed
  • Bacillus anthracis inactivated antigen
  • Bacillus anthracis strain V770-NP1-R antigen
  • Bacillus anthracis strain V770-NP1-R antigens
  • Bacillus anthracis strain V770-NP1-R filtrate (attenuated) antigen
  • Bacillus anthracis strain V770-NP1-R filtrate antigen
External IDs
  • RPA102

Pharmacology

Indication

CYFENDUS (Anthrax Vaccine Adsorbed, Adjuvanted) is a vaccine indicated for post-exposure prophylaxis of disease following suspected or confirmed exposure to Bacillus anthracis in persons 18 through 65 years of age when administered in conjunction with recommended antibacterial drugs.1 BioThrax is also approved for the same condition but is also used for pre-exposure prophylaxis for people whose occupation or other activities place them at high risk of exposure.2

The efficacy of CYFENDUS for post-exposure prophylaxis (PEP) is based solely on studies in animal models of inhalational anthrax.1

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Prevention ofDisease caused by bacillus anthracis••••••••••••••••••••••
Prevention ofDisease caused by bacillus anthracis••••••••••••••••••••••
Associated Therapies
Contraindications & Blackbox Warnings
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Pharmacodynamics

Limited information is available on the pharmacodynamics of the anthrax vaccine.

Mechanism of action

The anthrax vaccine induces antibodies raised against PA that may contribute to protection by neutralizing the activities of the cytotoxic lethal toxin and edema toxin of Bacillus anthracis.1,2 Bacillus anthracis proteins other than PA may be present in BioThrax, but their contribution to protection has not been determined.2

Absorption

Limited information is available on the absorption of the anthrax vaccine.

Volume of distribution

Limited information is available on the volume of distribution of the anthrax vaccine.

Protein binding

Limited information is available on the protein binding of the anthrax vaccine.

Metabolism

Limited information is available on the metabolism of the anthrax vaccine.

Route of elimination

Limited information is available on the elimination of the anthrax vaccine.

Half-life

Limited information is available on the half-life of the anthrax vaccine.

Clearance

Limited information is available on the clearance of the anthrax vaccine.

Adverse Effects
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Toxicity

There are no adequate and well-controlled studies of CYFENDUS in pregnant individuals. Available human data on CYFENDUS administered to pregnant individuals do not establish the presence or absence of vaccine-associated risks in pregnancy. However, available data on BioThrax (a licensed anthrax vaccine), administered to pregnant individuals are relevant to CYFENDUS because BioThrax and CYFENDUS contain the same active ingredient and are manufactured similarly. BioThrax does not contain CPG 7909 adjuvant. Data are available from a BioThrax observational study and pregnancy exposure registry.1

In the observational study, there were more birth defects in infants born to individuals vaccinated with BioThrax in the first trimester compared to individuals vaccinated post-pregnancy or individuals never vaccinated with BioThrax. Data from the BioThrax pregnancy exposure registry do not establish the presence or absence of vaccine-associated risks in pregnancy.1

In a developmental study with an embryo-fetal development toxicity phase, female rats were administered a full human dose (0.5 mL) of CYFENDUS twice prior to mating and once during gestation. This study revealed no evidence of harm to the fetus, changes in reproductive performance, or adverse effects on post-natal development due to the vaccine.1

The anthrax vaccine has not been evaluated for carcinogenicity, mutagenic potential, or male infertility in animals. Anthrax vaccine administered to female rats had no effect on fertility.1

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
DrugInteraction
AbacavirThe therapeutic efficacy of Anthrax vaccine can be decreased when used in combination with Abacavir.
AbataceptThe therapeutic efficacy of Anthrax vaccine can be decreased when used in combination with Abatacept.
AcyclovirThe therapeutic efficacy of Anthrax vaccine can be decreased when used in combination with Acyclovir.
AdalimumabThe risk or severity of adverse effects can be increased when Adalimumab is combined with Anthrax vaccine.
Adefovir dipivoxilThe therapeutic efficacy of Anthrax vaccine can be decreased when used in combination with Adefovir dipivoxil.
Food Interactions
No interactions found.

Products

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Brand Name Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
BioThraxSuspension50 mcg / 0.5 mLIntramuscular; SubcutaneousEmergent Biodefense Operations Lansing LlcNot applicableNot applicableCanada flag
BioThraxInjection, suspension100 ug/1mLIntramuscular; SubcutaneousEmergent BioDefense Operations Lansing, LLC1970-11-04Not applicableUS flag
CyfendusInjection, suspension100 ug/1mLIntramuscularEmergent Product Development Gaithersburg Inc.2023-09-19Not applicableUS flag

Categories

Drug Categories
Classification
Not classified
Affected organisms
Not Available

Chemical Identifiers

UNII
873OI62848
CAS number
Not Available

References

General References
  1. FDA Approved Drug Products: CYFENDUS™ (Anthrax Vaccine Adsorbed, Adjuvanted) Suspension for Intramuscular Injection [Link]
  2. FDA Approved Drug Products: BIOTHRAX® (Anthrax Vaccine Adsorbed) Suspension for Intramuscular or Subcutaneous Injection [Link]
  3. Emergent BioSolutions Receives U.S. FDA Approval of CYFENDUS™ (Anthrax Vaccine Adsorbed, Adjuvanted), previously known as AV7909, a Two-Dose Anthrax Vaccine for Post-Exposure Prophylaxis Use [Link]
  4. Emergent BioSolutions Receives FDA Approval for Large-Scale Manufacturing of BioThrax in Building 55 [Link]
PubChem Substance
347911075
RxNav
404774
Wikipedia
Anthrax_vaccine
FDA label
Download (363 KB)

Clinical Trials

Clinical Trials
PhaseStatusPurposeConditionsCount
4CompletedPreventionBacillus Anthracis (Anthrax)1
4CompletedPreventionHealthy Volunteers (HV)1
3CompletedPreventionAnthrax1
3CompletedTreatmentAnthrax1
2CompletedPreventionAnthrax3

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
FormRouteStrength
Injection, suspensionIntramuscular; Subcutaneous100 ug/1mL
Injection, suspensionIntramuscular; Subcutaneous50 mcg/0.5ml
SuspensionIntramuscular; Subcutaneous50 mcg / 0.5 mL
Injection, suspensionIntramuscular50 mcg/dose
Injection, suspensionIntramuscular100 ug/1mL
Prices
Not Available
Patents
Not Available

Properties

State
Liquid
Experimental Properties
Not Available

Drug created at December 01, 2015 20:05 / Updated at July 28, 2023 21:40