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Target intelligence / Profile preview
Hepatitis A Virus Antigen (HAV Antigen)
- Target
- HAV Antigen
- Molecular classification
- Viral protein, Capsid protein
01
Overview
Hepatitis A virus antigens are primarily composed of highly conserved structural proteins forming an icosahedral capsid. Key immunodominant epitopes reside mainly within specific regions of VP1 and VP3 proteins. These features underpin reliable serological testing methods as well as effective vaccine design targeting all human-infecting genotypes through a single serotype.
- Other names
- HAV capsid proteinVP1VP2VP3VP4Hepatitis A Virus structural protein
02
Mechanism of action
Vaccines induce neutralizing antibodies against conserved epitopes on the HAV capsid proteins, preventing viral entry and infection. Immunoglobulin provides passive immunity through pre-formed antibodies.
03
Biological functions
Viral entryImmune response inductionAntibody binding
04
Disease associations
Hepatitis AViral infection
05
Safety considerations
Potential for immune evasion through mutations in antigenic sites (though rare due to single serotype)Vaccine side effects (generally mild)
06
Interacting drugs
Hepatitis A vaccine
1 more in the full profile.
07
Biomarkers
IgM anti-HAVIgG anti-HAVTotal anti-HAVHAV RNA
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