EZH2 GAIN‐OF‐FUNCTION MUTATIONS ARE NOT ASSOCIATED WITH MORE FAVORABLE PROGNOSIS IN RELAPSED/REFRACTORY FOLLICULAR LYMPHOMA (FL): A PRELIMINARY ANALYSIS ON 590 PATIENTS. (12th June 2019) - Okosun, J.; Bödör, C.; Batlevi, C.; Nagy, N.; Michot, J.; Schneider, T.; Alizadeh, H.; Simon, Z.; Vose, J.; Younes, A.; Ribrag, V.; Fitzgibbon, J.; et al.