Single-arm, Prospective Clinical Trial of Efficacy and Safety of Daphnetin Capsules Combined With TC Regimen for Targeted Maintenance Therapy After Initial Treatment of Stage III-IV Epithelial Ovarian Cancer (RO/R1)

Imaging evaluation was performed every 3 months (± 7 days) from enrollment, and real-time examination was performed if new lesions were suspected.

The study was divided into two parts:

Part 1: Rexiacin capsules assist in the treatment phase of the TC regimen. Part 2: Rexiacin capsule combined with targeted drug maintenance therapy after the end of chemotherapy.

The overall research cycle is roughly divided into screening period, treatment period, and follow-up period:

Screening period: -7d~0d, that is, after the signing of the informed consent form, the screening assessment must be completed within 7 days; Treatment period: 1 dosing cycle every 3 weeks; During chemotherapy, blood routine, liver and kidney function tests were performed every week, tumor marker monitoring and safety evaluation were performed every cycle, and imaging evaluations were performed every 3 months (± 7 days) to evaluate the efficacy. After the end of chemotherapy, the maintenance treatment period and follow-up stage will be conducted, and biochemical tests such as tumor markers, blood routine, liver and kidney function will be performed every 3 months (± 7 days), and imaging evaluation will be performed to evaluate the efficacy, and the patient's self-evaluation results will be evaluated (FOSI, EQ-5D-5L). Peripheral blood immune indicators: Peripheral blood TBNK+Treg lymphocyte subset typing and activated lymphocyte cytokines were performed every 6 months (± 7 days) to monitor the patient's immune status. Medication is administered until an event that meets the criteria for treatment termination occurs or the clinical trial is closed.

Clinical tumor imaging evaluation was completed (the evaluation method was consistent before and after, enhanced CT or enhanced MRI was preferred). Investigational drug treatment should be continued until the occurrence of disease progression, or withdrawal due to intolerable toxicity, or receipt of new anti-tumor therapy, or withdrawal of informed consent and voluntary withdrawal for other reasons, or study termination, whichever occurs first. The termination time of the study is the last subject who has received the study drug for 1 year or all subjects are out of the group, whichever is achieved first.

Follow-up period: If the investigator decides to end the subject's treatment with the study drug, then the treatment period will be considered the end of (End of Therapy, EOT). All subjects, including those who discontinue treatment for any reason (except for loss to follow-up, death, withdrawal of informed consent), will have an EOT visit scheduled within 7 days after the investigator decides to end the subject's treatment with study drug. The EOT visit should include vital signs, physical examination, laboratory tests, and clinical tumor imaging evaluation (first enhanced CT or enhanced MRI).

Safety follow-up: Subjects are required to have a safety visit 30 days (+7 days) after the last dose. If the subject plans to receive a new anti-tumor treatment within 30 days after the last dose, a safety follow-up will be conducted before receiving the new anti-tumor therapy. Safety visits are required at the study center and should be performed to assess for AEs, concomitant medications, and concomitant treatments. Until adverse reactions related to the study drug disappear, or drop to Grade ≤1, or return to baseline levels, or stable or acceptable levels assessed by the investigator.

Survival follow-up: After the safety follow-up, subjects will be followed up for survival once every 3 months (± 7 days), and will be followed up by telephone until death, loss to follow-up, withdrawal of informed consent, or termination of the study.