FEZF1 and gastric cancer: To investigate the effect of FEZF1-AS1on the gastric cancer cells, MTT assays were performed and the results revealed that knockdown of FEZF1-AS1 decreased AGS and SGC-7901 cells proliferation compared with the respective controls, whereas ectopic overexpression FEZF1-AS1 promoted cell growth in MGC-803 (Fig. 3a).