SPDL1 and diffuse large B-cell lymphoma: Levels of sPD‐L1 (pg/mL) were significantly higher in patients with ENKTL [97.29 (71.67‐174.32), P < .0001] or DLBCL [65.12 (49.02‐113.23), P < .0001] than in healthy controls [49.97 (42.93‐56.70), Figure 3A].