Perhaps not surprisingly, the genetic landscape observed in PCDLBCL, LT is similar to that observed in activated B‐cell‐type diffuse large B‐cell lymphoma (ABC‐DLBCL), with NF‐κB‐activating mutations being observed in CD79B, CARD11, and MYD88 [58, 59, 60, 61, 62]. The gene discussed is MYD88; the disease is diffuse large B-cell lymphoma.