According to reports on cell cycle regulation, an increase in DUSP1 expression in gastric cancer leads to a cell cycle arrest in the G1 phase (Li et al., 2003), and it has been reported that DUSP1 expression in cumulus cells is reduced in the G0/G1 phase and increased in the S phase (Fu et al., 2019). The gene discussed is DUSP1; the disease is gastric cancer.