Various assays, including cell colony formation, MTT, transwell, and flow cytometry, were conducted to investigate the functional roles of circ_ASAP2, miR‐33a‐5p, and CDK7 on gambogic acid (GA)‐induced gastric cancer progression in cell lines AGS and HGC‐27, along with the normal human gastric epithelial cell line GES‐1. The gene discussed is CDK7; the disease is gastric cancer.