Leading Cancer Centre in Europe, Gustave-Roussy is ranked among the world leaders in oncology research and patient care. It is a successfully integrated centre for research and clinical practice as demonstrated by the impact of its scientific articles and the presence of its researchers at international conferences. Gustave Roussy’s ambition is immense, extending the frontiers of science by innovating diagnosis and therapies, ameliorating teaching and care. Gustave Roussy created integrated research and clinical programs including the ClinicObiome, directed by Professor Laurence Zitvogel, bridging a path between bench and bedside for harnessing the intestinal microbiome to increase the clinical outcome of cancer therapy.