Participants: Carlo Croce, Chair of Molecular Virology Department, Immunology and Medical Genetics, Ohio State University and of the Comprehensive Cancer Center, Ohio State University; Mauro Ferrari, President e CEO of The Methodist Hospital Research Institute, Houston (Video Conference); Pier Giuseppe Pelicci, Molecular mechanisms of cancer and ageing at IFOM-IEO Campus, Milan. Introduction by Marco Pierotti, Scientific Director of the National Tumor Institute in Milan.