550 Harnessing natural IL-18 activity through IL-18BP blockade reshapes the tumor microenvironment for potent anti-tumor immune response by Gady Cojocaru, Tal Fridman Kfir, Eran Ophir, Zoya Alteber, Pierre Ferre, Masha Frenkel, Assaf Menachem, Dan Blat, Olga Leiderman, Moran Galperin, Lital Sever, Nadav Cohen, Keren Cohen, Roy Granit, Sandra Vols, Lior Faigenbloom, Liron Soffer, Karin Meyer, Keren Menachem, Hadas Galon Tilleman, Michal Perpinial, Evgeny Tatirovsky