To investigate whether there was inverse correlation between lncRNA XIST and miR-101 in gastric cancer tissues, we conducted RT-PCR in 106 gastric tissues to measure the level of lncRNA XIST and miR-101, a significant inverse correlation was found between lncRNA XIST levels and miR-101 levels in the gastric cancer tissues (r = −0.6785, P < 0.001, Fig. 4f). The gene discussed is XIST; the disease is gastric cancer.