Finally, we analyzed miRNAs that might simultaneously target LINC01140 and FGF9 and selected miR-140-5p; the dynamic effects of LINC01140 and miR-140-5p on FGF9 expression, bladder cancer cell aggressiveness and the M2 polarization of macrophages cultured in cancer cell culture medium were determined. The gene discussed is FGF9; the disease is urinary bladder cancer.