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.
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Inclusion Criteria: * ≥18 years; * ECOG 0-1 * Life expectancy of at least 3 months; * Histologically or pathologically confirmed epithelial ovarian cancer (EOC), fallopian tube cancer, primary peritoneal cancer; Ovarian cancer patients with drug-resistant recurrence after platinum-based chemotherapy; * At least one measurable objective tumor lesion by spiral CT examination, the maximum diameter ≥ 1cm(according to RECIST 1.1); * Satisfactory main organ function,laboratory test must meet the following criteria: hemoglobin (HGB) ≥90g/L, neutrophil count(ANC) ≥1.5×109/L, platelet count(PLT) ≥80×109/L, Serum creatinine(CR)≤1.5 upper normal limitation (UNL),total bilirubin (TBil) ≤1.5 upper normal limitation (UNL), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤2.5 UNL (For patients with liver metastasis, the AST/ALT must be ≤5.0 UNL), Activated partial thromboplastin time (APTT), international normalized ratio (INR), prothrombin time (PT) ≤ 1.5×ULN; left ventricular ejection fraction (LVEF) ≥ 50%; thyroid stimulating hormone (TSH) within the normal range Within: if the baseline TSH exceeds the normal range, subjects with total T3 (or FT3) and FT4 within the normal range can also be enrolled; * Subjects of childbearing potential must use an appropriate method of contraception during the study period and within 120 days after the end of the study, have a negative serum pregnancy test within 7 days prior to study enrollment, and must be non-lactating subjects; Exclusion Criteria: * Suffered from other malignant tumors within 5 years before the start of treatment in this study; * Grade ≥1 unresolved toxicities (according to the most recent version of the National Cancer Institute \[NCI\] Common Terminology Criteria for Adverse Events \[CTCAE\]) due to any prior therapy, excluding alopecia and fatigue; neurotoxicity was Recovery to ≤ grade 1 or baseline before the group; * Subjects with any severe and/or uncontrolled disease ; * Poorly controlled diabetes (fasting blood glucose \[FBG\] \> 10 mmol/L) ; * Received major surgical treatment, incisional biopsy, or significant traumatic injury within 28 days prior to the start of study treatment; or had a long-term unhealed wound or fracture; * Serious arterial/venous thrombotic event within 6 months prior to initiation of study treatment ; * Previously received drug therapy against PD-1, PD-L1 and other related immune checkpoints ; * Participating in or participating in other clinical investigators within 4 weeks prior to the start of the study ; * Allergic to the active ingredients or excipients of the study drug ; * Unsuitable for the study or other chemotherapy determined by investigator.