P672: REAL-LIFE EFFICACY AND SAFETY OF VENETOCLAX MONOTHERAPY IN RELAPSED/ REFRACTORY CHRONIC LYMPHOCYTIC LEUKEMIA - INTERIM ANALYSIS OF MULTICENTRIC STUDY VERONE. (23rd June 2022) - Ysebaert, L.; Troussard, X.; Levy, V.; Le Calloch, R.; Guieze, R.; Leprêtre, S.; Michallet, A.-S.; Leblond, V.; Feugier, P.; Ramier, J.; Delmer, A.