Local Therapy for Oligometastatic ESCC Patients Treated With PD-1 Inhibitor

1. PD-1 inhibitor +/- Chemotherapy PD-1 inhibitor: all FDA approved PD-1 inhibitor producter is suitable First line: i. TP: paclitaxel 135-175mg/m2,d1+ DDP25mg/m2, d1-3 or 75mg/m2,d1;q21d (albumin-bound paclitaxel or paclitaxel liposomes as alternative of paclitaxel permitted as alternative) or ii. PF: DDP Second line (other platinum-based agents permitted as alternative such as carboplatin, nedaplatin, oxaliplatin, lobaplatin, etc.) i. Docetaxel or ii. Irinotecan or iii. Paclitaxel (albumin-bound paclitaxel or paclitaxel liposomes as alternative of paclitaxel permitted as alternatives) 2. Local therapy i. Radiotherapy GTV=all suspected lesions. SBRT: for lung, liver, adrenal gland, celiac lymphnode metatstases 48Gy/6fx; for spine metastatic disease 30Gy/10Fx; for brain metastases 24Gy/30fx; IMRT: for bone metastatic disease 30Gy/10fx; for esophageal lesion or lesion unsuitable of SBRT 50.4Gy/28fx; ii. Surgery iii. Radiofrequency/microwave ablation

1.PD-1 inhibitor +/- Chemotherapy PD-1 inhibitor: all FDA approved PD-1 inhibitor producter is suitable First line: i. TP: paclitaxel 135-175mg/m2,d1+ DDP25mg/m2, d1-3 or 75mg/m2,d1;q21d (albumin-bound paclitaxel or paclitaxel liposomes as alternative of paclitaxel permitted as alternative) or ii. PF: DDP Second line (other platinum-based agents permitted as alternative such as carboplatin, nedaplatin, oxaliplatin, lobaplatin, etc.) i. Docetaxel or ii. Irinotecan or iii. Paclitaxel (albumin-bound paclitaxel or paclitaxel liposomes as alternative of paclitaxel permitted as alternatives)