CD274 and cancer: Additionally, miRNA15a-bmiRNA16 and miRNA193-3p; miRNA34a-b-c; the cluster of miRNA25, miRNA93, and miRNA106b, 138-5p, 142-5p, and 146-a; miRNA152, miRNA200, and miRNA424 abrogate PD-L1 expression in many different cancer types [52,53,54,55,56,57,58,59,60,61,62].