This study is a prospective, single arm phase II clinical trial ,aimed at exploring the efficacy and safety of the combination therapy of anti-PD-1 and VEGF bispecific antibody Ivonescimab combined with chemotherapy as first-line treatment of relapsed or metastatic thymic cancer.

This study is a prospective, single arm phase II clinical trial ,aimed at exploring the efficacy and safety of the combination therapy of anti-PD-1 and VEGF bispecific antibody Ivonescimab combined with chemotherapy as first-line treatment of relapsed or metastatic thymic cancer. Patients who met the inclusion criteria and were pathologically confirmed to be metastatic or recurrent thymic cancer were treated with first-line treatment of Ivonescimab (20mg/kg) combined with chemotherapy (carboplatin and paclitaxel / albumin paclitaxel), and the efficacy was evaluated clinically and radiologically. The primary endpoint of this study was the 6-month progression free survival rate (PFS6m), and the secondary endpoints included PFS, objective response rate (ORR), disease control rate (DCR), duration of remission (DOR), and overall survival (OS), as well as safety related research indicators including adverse events (AE) and quality of life score (QOL). During the study, biological samples were collected from patients, and exploratory studies on the efficacy and side effect biological markers of Ivonescimab were carried out.