The Club Hématopoïèse et Oncogenèse (CHO) is a collaborative working group affiliated with the French Society of Hematology (SFH). Founded in 1994, it brings together researchers and clinicians who share a common interest in hematopoiesis and oncogenesis. The CHO's scientific scope covers normal and pathological hematopoietic development, the mechanisms of tumorigenesis, including leukemias and solid tumors,  and stem cell biology.

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For over 30 years, its annual congress has become a recognized meeting point, bringing together leading French and international researchers and clinicians.