CD274 and neoplasm: The current data show that the restoration of miR-424-5p, miR-138-5p, miR-570-3p, miR-200c-3p, miR-383-5p, miR-34a-5p, miR-3609, miR-195-5p, and miR-497-5p can inhibit tumoral PD-L1 expression, transform an immunosuppressive tumor microenvironment into a pro-inflammatory one, suppress tumor proliferation, inhibit tumor migration, improve chemosensitivity, enhance tumor apoptosis, imprison the cell cycle, and repress the clonogenicity of TNBC cells21.