BCL2 and gastric cancer: In gastric cancer (GC), according to reports, there are many lncRNAs involved in cell migration, invasion and proliferation (MacLeod et al., 2017; Li et al., 2019; Ma et al., 2019; Hu, Wang & Li, 2019), and even participated in 5-fluorouracil resistance via increasing Bcl2 expression (Du et al., 2019).