Medium Dose of Three Drugs (TPF) Concurrent Chemoradiotherapy Combined With PD-1 Checkpoint Inhibitor for Locally Advanced Esophageal Squamous Cell Carcinoma --Prospective, Single Center, Single Arm, Phase II Clinical Study (FUTURE-2)
The goal of this clinical trial is to learn if immune microenvironment modification could improve the effect of chemoradiotherapy for patients with local advanced esophageal squamous cell carcinoma. The main questions it aims to answer are: 1. Does immune microenvironment could be modified by medium dose of three drugs (paclitaxel, cisplatin, 5-FU), PD1 checkpoint inhibitor, probiotics, and thymosin α1？ 2. Does induction and consolidation of PD1 checkpoint inhibitor improve the effect of chemoradiotherapy for patients with esophageal cancer? This is a single arm study. Participants will: 1. Take one cycle of induction chemotherapy (paclitaxel, cisplatin, 5-FU) and immunotherapy (Sintilimab), two cycle of concurrent chemoradiotherapy, one cycle of consolidation chemo-immunotherapy, and then 1 year of immunotherapy. 2. Take probiotics (Clostridium Butyricum) for 1 year and thymosin alpha-1 daily during radiotherapy.
• Sign written informed consent before implementing any trial related procedures;
• Age range from 18 to 80 years old;
• Stage II-III and stage IV esophageal squamous cell carcinoma with only extraregional lymph node metastasis determined by histopathology;
• Inability to undergo surgical resection or patient refusal to undergo surgery;
• ECOG PS 0-1;
• Expected survival time\>3 months;
• Sufficient organ function is required for the subject to meet laboratory indicators