CD274 and diffuse large B-cell lymphoma: Notably, SNHG14 acts as a critical sponge of miR-5590-3p to elevate the expression level of ZEB1 (an important transcription factor related to the malignant behaviors of many tumors) [60], thereby resulting in activation of the PD-1/PD-L1 pathway and promotion of DLBCL immune evasion [61].