P1168: CHARACTERISTICS PREDICTIVE OF PROGRESSION DURING FRONTLINE TREATMENT IN AGGRESSIVE B-CELL LYMPHOMAS. (23rd June 2022) - Bock, A.; Mwangi, R.; Maurer, M.; Cerhan, J.; Ng, W. L.; King, R.; Bennani, N. N.; Ansell, S.; Habermann, T.; Witzig, T.; Wang, Y.; Nowakowski, G.