Neoadjuvent Dose-dense Gemcitabine and Cisplatin In Muscle Invasive Bladder Cancer

Participants will receive neoadjuvant ddGC, consisting of gemcitabine and cisplatin administered at shortened intervals (e.g., gemcitabine 1200 mg/m² on days 1 and 8, fractionated cisplatin 35 mg/m² on day 1and 8, every 14 days) with appropriate growth factor support. A total of four cycles are planned before radical cystectomy.