KDM1A and gastric cancer: To answer this question, as KDM1A was reported to contribute to gastric cancer progression (Ma et al., 2015; Dai et al., 2020; Ma et al., 2020), monobenzone was applied to gastric cancer cell lines MGC-803 and BGC-823, two LSD1 overexpressed cell lines as reported (Zheng et al., 2013; Fang et al., 2017), for 5 days treatment, respectively.