Antiflammin 2 inhibits the synthesis of platelet-activating factor (PAF) with the IC50 of 100 nM[1].
References
[1] G Camussi, et al. Antiinflammatory peptides (antiflammins) inhibit synthesis of platelet-activating factor, neutrophil aggregation and chemotaxis, and intradermal inflammatory reactions. J Exp Med. 1990 Mar 1;171(3):913-27. DOI:10.1084/jem.171.3.913