CD274 and gastric cancer: In addition to miR-513 and miR-200, a variety of miRNAs such as miR-34a, miR-152, miR-570, miR-15a, miR-193a, and miR-16 have been found to directly inhibit the expression of PD-L1 in non-small cell lung cancer, gastric cancer, melanoma, and pancreatic cancer (106).