TNBC

The study includes two cohorts: Cohort A will enroll patients with locally advanced or metastatic TNBC who have previously received taxane/anthracycline-based chemotherapy and topoisomerase inhibitor based antibody-drug conjugate treatment, and will receive 9MW2821 monotherapy; Cohort B will enroll patients with locally advanced or metastatic TNBC who have not previously received systemic therapy, and will receive a combination treatment of 9MW2821 and a PD-1 inhibitor reports Mabwell.