For example, Bae et al. (2020) found that limonin can induce cell apoptosis by activating p53 signal pathway, reducing the viability of SKOV‐3, A2780, and RMUG‐S ovarian cancer cells, and reversing the drug resistance of CISRSKOV‐3 cells by activating apoptosis. The gene discussed is TP53; the disease is ovarian cancer.