1473 Prostaglandin E2 and the tumor microenvironment: unleashing the potential of cancer immunotherapy through rational combination therapies - Anais Elewaut; Guillem Estivill; Maria Novatchkova; Felix Bayerl; Lisa Hoffmann-Haas; Francesco Andreatta; Trung Nguyen; Milica Vulin; Jan Boettcher; Anna Obenauf (Journal for ImmunoTherapy of Cancer, 2023)