ABCG2 and nonpapillary renal cell carcinoma: A recent paper (Reustle et al., 2018) implicated the role of aberrantly methylated miR-212-3p and miR-132-3p in ccRCC in the post-transcriptional regulation of BCRP/ABCG2 (breast cancer resistance protein), which contributes to the multi-drug resistance seen in cancer.