Additionally, PTCL, NOS (n=5) and ALK- ALCL (n=1) cases which were challenging to make a definite diagnosis based on only morphologic features and immunophenotypes were subjected to DNA sequencing using a 103-gene panel that covers genes associated with the oncogenesis and treatment of T/NK lymphoma, and the results were provided in Table S1. This evidence concerns the gene ALK and anaplastic large cell lymphoma.