In addition, several miRNAs, such as miR-34a, miR-7-5p, and miR-325-3p, have also been shown to play a role in cancer drug resistance by influencing drug efflux via targeting ABC transporters in a variety of cancers, including colon cancer, glioblastoma, and hepatocellular carcinoma (HCC) (158–160). Here, ABCG2 is linked to cancer.