SLC29A1 and renal cell carcinoma: Several miRNAs, such as miR-185-5p, miR-124-3p, miR-210-3p, miR-122-5p, miR-214-5p, miR-223-3p, miR-34b-5p, and miR-506-3p, which were predicted to target ENT1 and reported to be upregulated in RCC, did not downregulate the transport activity of ENT1 (data not shown).