NIBAN1 and renal cell carcinoma: Compared with HK-2, a human proximal tubule epithelial cell line, miR-4521 reduced by ~82.4% (P < 0.0001) and 56.9% (P = 0.0001, Fig. 4a) and FAM129A increased by ~48.1% (P = 0.0041) and 103.3% (P < 0.0001, Fig. 4a) in RCC cell lines 786-O and ACHN.