As PTCL‐NOS and ALCL‐ALK+ were two major histological types of PG‐TCL, we further compared the clinical features and survival of patients between primary gastric PTCL‐NOS/ALCL‐ALK+ and non‐gastric PTCL‐NOS/ALCL‐ALK+. This evidence concerns the gene ALK and mature T-cell and NK-cell non-Hodgkin lymphoma.