CD274 and neoplasm: miR-935p, miR-106b-5p, miR-138-5p, miR-142-5p, miR-193a-3p, miR-200, and miR-570 overexpression downregulate PD-L1 in tumor cell lines of different hystotypes (Chen et al., 2014; Guo et al., 2015; Cioffi et al., 2017; Jia et al., 2017; Kao et al., 2017) (Figure 1D).