Proliferation of RCC cells in the miminc-NC, miR-93 mimic, inhibitor-NC, miR-93 inhibitor and miR-93 inhibitor + si-RUNX3 groups. Notes: cell proliferation was evaluated at 0, 24, 48, and 72 h; *Refers to compare with the mimic NC group, P<0.05; #Refers to compare with the inhibitor NC group, P<0.05; &Refers to compare with the miR-93 inhibitor group, P<0.05; RCC, renal cell carcinoma; NC, negative control; miR-93, microRNA-93; RUNX3, runt-related transcription factor 3.