DLEU2 and gastric cancer: The lncRNAs RP11-119F7.4, C5orf66-AS1 and DLEU2 were differentially expressed in GC tissue and non-tumour gastric tissue, and were predominantly correlated with Lauren histologic classification of GC (Sun et al., 2015; Zhou Q. et al., 2020; Hu et al., 2022).