LncRNA HULC accelerates the proliferation of colon cancer cells by miR-613/RTKN 28, while lncRNA Xist, as the endogenous sponge of miR-137, upregulates Rac1, which is the target gene of miR-137 and promotes the proliferation of glioma cells [26]. The gene discussed is RTKN; the disease is malignant colon neoplasm.