P641: RETREATMENT WITH VENETOCLAX AFTER VENETOCLAX, OBINUTUZUMAB +/- IBRUTINIB: POOLED ANALYSIS OF 13 PATIENTS WITH CHRONIC LYMPHOCYTIC LEUKEMIA (CLL) TREATED IN GCLLSG TRIALS. (23rd June 2022) - Cramer, P.; Fürstenau, M.; Giza, A.; Robrecht, S.; Tausch, E.; Schneider, C.; Wendtner, C.-M.; Hoechstetter, M.; Schetelig, J.; Böttcher, S.; Dreger, P.; Fink, A.-M.; et al.