Platinum-resistant patients who have received at least 1 line chemotherapy in the past and the recurrence time is less than 6 months will receive envafolimab combined with lenvatinib and VP-16 for 6 cycles, followed by single-agent envafolimab maintenance therapy until disease progression, intolerable toxicity, or withdrawal of informed consent
This study is a single-arm, open-label, exploratory clinical study, the main purpose is to evaluate the combination of envafolimab, lenvatinib VP-16 in the treatment of platinum-resistant recurrent epithelial ovarian cancer，primary fallopian tube cancer and primary peritoneal carcinoma.