1Microbiology, Tumor & Cell Biology Department, Karolinska Institutet, Stockholm, Sweden. E-mail: [email protected], 2Department of Experimental & Clinical Medicine, University of Catanzaro ‘Magna Graecia’, Catanzaro, Italy. E-mail: [email protected], 3Department of Clinical and Experimental Medicine, University of Perugia, Perugia, Italy. E-mail: [email protected], 4Department of Experimental & Clinical Medicine, University of Catanzaro ‘Magna Graecia’, Catanzaro, Italy. E-mail: [email protected], 5German Cancer Research Center, DKFZ, Clinical Cooperation Unit Dermato-Oncology, Heidelberg, Germany. E-mail: [email protected], 6Istituto Nazionale per la Ricerca sul Cancro, Centro di Eccellenza per la Ricerca Biomedica, Genova, Italy. E-mail: [email protected], 7Fred Hutchinson Cancer Research Center, Clinical Research Division, Seattle, WA, USA. E-mail: [email protected], 8Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy. E-mail: [email protected], 9Department of Molecular Medicine, Istituto Giannina Gaslini, Genova, Italy. E-mail: [email protected], 10Department of Lymphocyte signaling and development, The Babraham Institute, Cambridge, UK. E-mail: [email protected], 11German Cancer Research Center, DKFZ, Clinical Cooperation Unit Dermato-Oncology, Heidelberg, Germany. E-mail: [email protected], 12Department of Clinical and Experimental Medicine, University of Perugia, Perugia, Italy. E-mail: [email protected], 13Departments of Surgery of Immunology and of Pathology, University of Pittsburgh Cancer Institute, Pittsburgh, US. E-mail: [email protected], 14Microbiology, Tumor & Cell Biology Department, Karolinska Institutet, Stockholm, Sweden. E-mail: [email protected], 15Department of Experimental & Clinical Medicine, University of Catanzaro ‘Magna Graecia’, Catanzaro, Italy. E-mail: Ennio. [email protected]