SNHG12 and gastric cancer: To verify the role of SNHG12 in GC proliferation, gain and loss assays were conducted in MGC-803 and AGS cells: shRNA vectors were used to knockdown SNHG12, and compared with the NC, the expression levels in sh-SNHG12-1 or sh-SNHG12-2 were both significantly inhibited in MGC-803 and AGS cells (p <0.01) (Figure 2A).