To further explore whether CFL2 could mediate the biological function of miR-3189-3p in GC cells, we co-transfected miR-3189-3p mimics and the CFL2 expression vector GV230-CFL2 into MGC803 cells, with the co-transfection of miR-3189-3p mimics and the GV230-empty vector as a control. The gene discussed is CFL2; the disease is gastric cancer.