Neoadjuvant Adebrelimab Plus Etoposide and Cisplatin in Neuroendocrine Bladder Carcinoma

Adebrelimab 1200 mg IV on Day 1, once every 3 weeks for up to 4 cycles (each cycle = 21 days)

Etoposide 0.1g IV on Days 1-3, once every 3 weeks for up to 4 cycles (each cycle = 21 days)

Cisplatin 35mg/m2 IV on Days 1-2, once every 3 weeks for up to 4 cycles (each cycle = 21 days)

Radical cystectomy should be performed within 4-6 weeks after completion of last dose