NCIt definition : A recombinant form of human complement component 1 esterase inhibitor (C1INH), a serine
protease inhibitor normally present in human plasma, that can be used for the treatment
of hereditary angioedema (HAE). Upon administration, conestat alfa irreversibly binds
to and inhibits the activities of several proteases of the contact and complement
systems, which may include activated C1s, kallikrein, factor XIIa and factor XIa,
blocking the activation of the contact and complement systems. This may prevent inflammation
and the production of bradykinin (BK), thereby blocking BK-driven increase in vascular
permeability and the resulting edema.;