retrospective and prospective multicenter observational clinical and biological data collection from all patients with newly diagnosed CLL, SLL or MBL. retrospective cohort: all cases with a diagnosis between January 1st 2010 and August 31th 2021. prospective cohort: all patients with a diagnosis between September 1st 2021 and September 1st 2025.
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Describe the diagnosis and management of CLL patients
Timeframe: at 1 year for the prospective cohort and at 4 years for the retrospective cohort