miRNA expression profiles of lymphatic endothelial cells and functional analysis indicate that miR-503-3p might be as downstream targets of ELK3 in lymphatic endothelial cells, which cause to promote the migrating and invasive ability of breast cancer cells such as MDA-MB-231, Hs578T, and BT20 in vitro [43]. The gene discussed is ELK3; the disease is breast carcinoma.