Cadonilimab Plus Nab-Paclitaxel for Recurrent or Metastatic Muscle Invasive Bladder Cancer

Cadonilimab (10 mg/kg, administered on the first day of each cycle, Q3W, until there is no clinical benefit)+Nab-Paclitaxel(200 mg/m2, Q3W ,6 cycles), every 3 weeks (21 days) is a treatment cycle.