MALAT1 and gastric cancer: Previous studies have shown that lncRNAs can influence the expression of adjacent mRNAs that are located within 10 kb of the lncRNAs through cis-regulatory effects; for example, the lncRNA Malat1 plays a cis-regulatory role in the adult mouse (62), and the lncRNA GAPLINC regulates mRNA by cis-regulation in gastric cancer (63).