CD274 and cancer: Various reports showed that numerous miRNAs could have modulatory roles in ICPs’ expression in different types of cancer: miR-15a/miR-15b [87], miR-34a [88], miR-200 [89], miR-424 [90], miR-513 [91], miR-138-5p [92], and miR-142-5p [93] regulate the expression of PD-L1.