1369 CIS-demasking cytokine linker technology allows selective cytokine delivery to activated immune cells while sparing others and peripheral toxicity by Caroline Mary, Géraldine Teppaz, Virginie Thépénier, Nicolas Poirier, Aurore morello, Margaux Seite, Justine Durand, Cecile Batty, Julien Taurelle, Amandine Georges