STAT3, that is signal transducer and activator of transcription factor 3, relates not only to the proliferation, invasion, metastasis, apoptosis of ovarian cancer cells, but also chemotherapy resistance (Zhong et al., 2021; Yu et al., 2020; Liu et al., 2021; Pan et al., 2020). The gene discussed is STAT3; the disease is ovarian carcinoma.