FEZF1 and gastric cancer: As shown in Additional file 2: Figure S1A, of the five gastric cancer cell lines (SGC- 7901, BGC-823, MGC-803, AGS and HGC-27), SGC-7901 and AGS expressed higher levels of FEZF1-AS1 than the normal gastric epithelium cell line (GES-1); however, BGC-823 and MGC-803 expressed deficiency.