CCL2 and urinary bladder cancer: Chen et al. found that with the help of C-C Motif Chemokine Ligand 2(CCL2) and vascular endothelial growth factor C (VEGF-C) excretion, Lymph Node Metastasis Associated Transcript 1 (LNMAT1, a kind of lncRNA) can recruit macrophages into the tumor, then promotes lymphatic metastasis in bladder cancer [7].