As shown in Supplementary Figure S1A, of the five gastric cancer cell lines (SGC-7901, BGC-823, MGC-803, AGS and MNK45), BGC-823 expressed higher levels of HOTAIR (4.11-fold) and lower levels of miR34a (0.11-fold) and CDH1 (0.17-fold) than the normal gastric epithelium cell line (GES-1); however, SGC-7901 expressed relative lower HOTAIR and higher miR34a and CDH1 expression. This evidence concerns the gene HOTAIR and gastric cancer.