S139: BCOR DELETION SUSTAINS NOTCH1 SIGNALLING ACTIVATION TO ACCELERATE CHRONIC LYMPHOCYTIC LEUKEMIA (CLL) PROGRESSION TOWARD RICHTER TRANSFORMATION IN MICE. (23rd June 2022) - Rompietti, C.; Sorcini, D.; De Falco, F.; Dorillo, E.; Adamo, F. M.; Silva Barcelos, E. C.; Stella, A.; Scialdone, A.; Esposito, A.; Arcaleni, R.; Bigerna, B.; Martino, G.; et al.