he CHO congresses aim to follow the scientific news of hematopoiesis and oncogenesis thanks to the participation of renowned guest speakers. Through their scientific enthusiasm, the 126 participants of the 24th CHO Congress greatly contributed to the success of this annual event held on the Ile des Embiez (Var). The young researchers from the laboratories selected on the scientific qualities of their abstract thus had the opportunity to exhibit their work and debate with the national and international guest speakers. Their stay was subsidized thanks to the support of CHO sponsors, a big thank you to them!