ARID1A and diffuse large B-cell lymphoma: As for the molecular features, most frequently altered genes in localized DLBCL included PIM1, TET2, KMT2D, BTG2, BTG1, MYD88, ARID1A, HIST1H1E, MPEG1, TNFAIP3, TP53, CREBBP, FAS, GNA13, and TMSB4X, which were also reported to be commonly mutated in DLBCL (27, 28).