TBL1XR1 and diffuse large B-cell lymphoma: Genes involved in BCR signaling and B‐cell activation (MYD88, CARD11, TBL1XR1, CD79B, TNFAIP3) or epigenetic regulators (KMT2D, CREBBP, TET2) were observed at frequencies comparable with de novo DLBCL subtypes.