1 Cancer Immunology Program and Tumor Microvenvironment Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA (RLF); INSERM, UMRS1138, Laboratory of Integrative Cancer Immunology, Paris, France (JG); Université Paris Descartes, Sorbonne Paris Cité, UMRS1138, Paris, France (JG); Sorbonne Universités, UPMC Univ Paris 06, UMRS1138, Centre de Recherche des Cordeliers, Paris, France (JG) ferrisrl@upmc.edu jerome.galon@crc.jussieu.fr.