EIF4A1 and gastric cancer: In addition, ectopic expression of miR-126, miR-647 and miR-1284, which are evidently downregulated in drug-resistant SGC7901/VCR gastric cancer cells, could sensitize gastric cancer cells to VCR by inhibiting expression of EZH2, ANK2 and EIF4A1, respectively [77, 141, 142].