EZH2 and diffuse large B-cell lymphoma: Point mutations affecting codon 641 of EZH2 were recently described in a subset of GCB-DLBCL and FL, [4] but were absent from activated B cell-phenotype DLBCL (ABC-DLBCL), small lymphocytic lymphoma, mantle cell lymphoma, and peripheral T cell lymphoma, all of which lack a germinal center phenotype.