A Phase I Clinical Trial of CAR-T Cells for Advanced Gynecological Solid Tumors

This study is a single-arm, open-label, dose-escalation and expansion clinical trial. The study is divided into two phases: the dose-escalation phase and the dose-expansion phase. The dose-escalation phase is designed with three predefined dose levels, following a "3+3 design" and progressing from low to high doses. The "3+3" dose-escalation scheme is as follows: if no dose-limiting toxicity (DLT) occurs in the three subjects at a given dose level during the observation period, the dose will be escalated to the next higher level. If one subject out of the initial three experiences DLT at a dose level, an additional three subjects will be enrolled at that dose level for further DLT observation. The dose level at which no more than one subject out of the final six subjects experiences DLT will be defined as the maximum tolerated dose (MTD). The dose level for the expansion phase will be determined based on a comprehensive consideration of the occurrence of DLT and the efficacy results obtained, with the actual occurrence serving as the basis. The safety of CAR-T therapy will be assessed by monitoring adverse events (AE) following cell therapy. The efficacy of CAR-T therapy will be evaluated by observing disease response following cell therapy. Blood samples will be collected before cell infusion and within one year after infusion to measure the number of CAR-T cells, CAR copy number, and PD-1 nanobody concentration, thereby evaluating the pharmacokinetics of CAR-T cells. Blood samples will also be collected before cell infusion and within 28 days after infusion to measure the concentrations of relevant cytokines, in order to assess the pharmacodynamic characteristics of CAR-T therapy. During the study, blood samples used for the production of CAR-T cells will be transported to Shanghai Cell Therapy Group Pharmaceutical Technology Co., Ltd. After the production of CAR-T cells is completed, the cells will be shipped to the study sponsor, who will then infuse the CAR-T cells into the corresponding subjects.