NAPs block viral entry in many viruses including hepatitis B and hepatitis D.
NAPs also have a post-entry activity against HBV consistent with HBsAg release inhibition.
The post-entry activity of NAPs appears essential for antiviral activity in vivo.
NAPs have therapeutic effect against chronic HBV and HDV infection in humans.
Elimination of HBsAg by NAPs may improve the effect of immunotherapy.