1087 SOT201 is a novel cis-acting immunocytokine targeting IL-15Rβγ to reinvigorate PD-1+tumor infiltrating lymphocytes and potentiate anti-tumor efficacy by Ulrich Moebius, Radek Špíšek, David Béchard, Zuzana Antosova, Nada Podzimkova, Irena Adkins, Klara Danova, Lenka Palova Jelinkova, Katerina Behalova, Petr Danek, Matej Fabisik, Kamila Hladikova, Nataliia Kalynovska, Lucie Kosinova, Pavel Marasek, Vladyslav Mazhara, Jan Praslicka, Katerina Sajnerova, Milada Sirova, Marek Kovar, Martin Steegmaier