Since lncRNAs can competitively target miRNAs via their MREs (miRNA response elements) to act as ceRNAs (competing endogenous RNAs), thus regulating the expression of downstream target RNAs [40], here, we hypothesized that miRNAs might be involved in the effect of LINC01140 and FGF9 on the aggressiveness of bladder carcinoma cells and macrophage M2 polarization. Here, FGF9 is linked to urinary bladder carcinoma.