The studied cohort included 361 cases, comprising 261 B‐cell lymphomas, 45 T‐cell lymphomas, and 55 classical Hodgkin lymphomas (cHL); B‐cell lymphomas comprised 79 follicular lymphomas (FL), 43 DLBCL, 40 nodal marginal zone lymphomas (NMZL), 35 chronic lymphocytic leukemias (CLL), 28 PBL, 28 MCL, and 8 lymphoplasmocytic lymphomas (LPL); T‐cell lymphomas comprised 24 angio‐immunoblastic T‐cell lymphomas (AITL), 12 peripheral T‐cell lymphomas NOS (PTCL‐NOS), and 9 anaplastic large cell lymphomas (ALCL), ALK‐positive; and cHL comprised 45 nodular sclerosis cases and 10 mixed‐cellularity cases. This evidence concerns the gene ALK and mature T-cell and NK-cell non-Hodgkin lymphoma.