As reported, KDM1A is a driver of epithelial–mesenchymal transition (EMT) and it can contribute to cell migration and invasion (Ambrosio et al., 2017; Boulding et al., 2018; Das et al., 2019), mRNA expressions of EMT biomarkers, including CDH1, ZO-1, N-Cadherin and Vimentin, were investigated when gastric cancer cells were exposed to different concentrations of monobenzone for 36 h. The gene discussed is TJP1; the disease is gastric cancer.