Study of Tislelizumab Combined With Chemoradiotherapy and Surgery for Unresectable Esophageal Squamous Cell Carcinoma

"1. ICRT phase -Tislelizumab and CRT regimen Tislelizumab 200 mg IV, C1D1 and C4D1~2. Consolidation phase: Tislelizumab-Paclitaxel-Cisplatin regimen Tislelizumab 200 mg IV, D1, every 3 weeks (\*The regimen is repeated until unacceptable toxicity or disease progression, up to maximum of 2 cycles. )~3. Adjuvant phase-Tislelizumab Tislelizumab 200 mg IV, D1, every 3 weeks (\*The regimen is repeated until unacceptable toxicity or disease progression, up to maximum of one year or 17 cycles.)"

"1. ICRT phase -Tislelizumab and CRT regimen Paclitaxel 50 mg/m2 IV, D1, weekly (\* 4-6 cycles judged by investigators.)~2. Consolidation phase: Tislelizumab-Paclitaxel-Cisplatin regimen Paclitaxel 135 mg/m2 IV, D1, every 3 weeks (\*The regimen is repeated until unacceptable toxicity or disease progression, up to maximum of 2 cycles.)"

"1. ICRT phase -Tislelizumab and CRT regimen Cisplatin 25 mg/m2 IV, D1, weekly ( 4-6 cycles judged by investigators.)~2. Consolidation phase: Tislelizumab-Paclitaxel-Cisplatin regimen Cisplatin 75 mg/m2 IV, D1, every 3 weeks (\*The regimen is repeated until unacceptable toxicity or disease progression, up to maximum of 2 cycles. )"

1\. ICRT phase -Tislelizumab and CRT regimen Radiotherapy treatment: IMRT 41-50.4Gy, a dose of 1.8 to 2Gy per day, 5 days per week for 5 weeks during the RT phase.