NCIt definition : A human immunodeficiency virus type 1 (HIV-1) protease nonpeptidic inhibitor, with
activity against HIV. Upon oral administration, darunavir selectively targets and
binds to the active site of HIV-1 protease, and inhibits the dimerization and catalytic
activity of HIV-1 protease. This inhibits the proteolytic cleavage of viral Gag and
Gag-Pol polyproteins in HIV-infected cells. This inhibition leads to the production
of immature, non-infectious viral proteins that are unable to form mature virions,
and prevents HIV replication.;