Clinical Trials Comparing Trastuzumab Plus Bevacizumab With Bevacizumab as First-line Maintenance Therapy for Epithelial Ovarian Cancer

This trial is a randomized, open-label, positive-controlled, multicenter phase Ib/III clinical trial, divided into two phases. Phase Ib aims to evaluate the safety and tolerability of SHR-A1811 in combination with bevacizumab as first-line maintenance therapy in participants with epithelial ovarian cancer without pathological progression (PD) after first-line platinum-based doublet chemotherapy plus bevacizumab (hereinafter referred to as "platinum-based triple therapy"). Phase III aims to evaluate the efficacy and safety of SHR-A1811 in combination with bevacizumab versus bevacizumab as maintenance therapy in participants with epithelial ovarian cancer without PD after first-line platinum-based triple therapy.