Camrelizumab Combined With Neoadjuvant Concurrent Chemoradiotherapy for Resectable Locally Advanced ESCC（NICE-RT）

Inclusion Criteria:

1. Informed consent has been signed.
2. In age from 18 to 75.
3. Thoracic esophageal squamous cell carcinoma confirmed by histology or cytology, which is classified as cT1b-4aN2-3M0 or M1 (only for supraclavicular lymph node metastasis), accompanied by lymph node metastasis (CT shows that the short diameter of the lymph node is greater than 1cm, the lymph node near the recurrent laryngeal nerve is greater than 8mm, the lymph node in the left upper abdominal region of the stomach is greater than 8mm, and PET-CT indicates positive).
4. At least one metastatic lymph node is more than or equal to 5cm from the primary lesion.
5. Have not received any anti-tumor treatment for esophageal cancer in the past, including radiotherapy, chemotherapy, surgery, etc.
6. The investigator assessed that lesion can be removed surgically.
7. At least one measurable lesion (according to RECIST 1.1)
8. ECOG PS: 0\~1.
9. Weight loss\<10% within 3 months, PG-SGA score\<8.
10. Has sufficient organ function within 28 days before the first administration, (1) Blood routine: WBC≥3.0×109/L; ANC≥1.5×109/L; PLT≥50×109/L; HGB≥90 g/L (2) Liver function: AST≤5.0×ULN; ALT≤5.0×ULN; TBIL≤2.0×ULN (3) Renal function: Cr≤1.5×ULN or CrCl ≥60 mL/min (4) Coagulation function: INR≤1.5; APTT≤1.5×ULN (5)Women of childbearing age must take contraceptive measures within 3 months from the first dose to the last use of the study drug.

Exclusion Criteria:

1.Pathological type and stage

1. Pathology indicates that it is mixed squamous cell carcinoma (including adenosquamous carcinoma, squamous cell carcinoma, small cell carcinoma, carcinosarcoma, sarcomatoid carcinoma, etc.)
2. Non resectable or metastatic esophageal cancer

2\. Medical history and complications

1. Subjects with any known active autoimmune disease (subjects who have stable clinical symptoms and do not need systematic use of immunosuppressants, such as type I diabetes and hypothyroidism that only need hormone treatment, and skin diseases that do not need systematic treatment can be included).
2. Subjects who have any complications requiring systemic treatment with glucocorticoids such as prednisone (\>10mg/day) or who have used immunosuppressive drugs within 14 days before the first administration (subjects who do not have active autoimmune diseases, inhale or locally use glucocorticoids, and who use prednisone (\>10mg/day) for hormone replacement treatment of adrenal insufficiency can be included in the group).
3. Subjects have received tumor vaccine or other immune activated anti-tumor drugs (such as interferon, interleukin, thymosin or immunocyte therapy) within 1 month before the first administration.
4. The subject is participating in other clinical trials or has received drug intervention from other clinical trials within 4 weeks before the first administration.
5. Subjects had received surgery or radiotherapy\>30Gy within 4 weeks before the first administration.
6. Subjects with other malignant tumors that need to be treated (subjects with skin basal cell carcinoma, skin squamous cell carcinoma, breast cancer in situ or cervical cancer in situ that have received radical treatment and do not need other treatment can be included)
7. Subjects have suffered from serious cardiovascular diseases in the past: myocardial ischemia or myocardial infarction above Grade II, arrhythmia under poor control (including QTc interval ≥ 480 ms); Grade III-IV cardiac insufficiency; Color Doppler echocardiography showed that left ventricular ejection fraction (LVEF) was less than 50%.
8. Subjects have known history of allogeneic organ transplantation and allogeneic hematopoietic stem cell transplantation.
9. Subjects received live vaccine within 30 days before the first administration.

3\. Laboratory inspection

1. The subject's serum is HIV positive
2. Active hepatitis B (HbsAg positive and HBV-DNA ≥ 103 copies/mL) or active hepatitis C (HCV antibody positive and HCV-DNA positive, requiring antiviral treatment at the same time).

4\. Allergies and adverse drug reactions should be excluded

1. Presence of allergy or hypersensitivity to monoclonal antibodies
2. Allergy or intolerance during infusion

5\. Diseases or abnormal laboratory indicators that the investigator believes will affect the research results or are not in line with the interests of the subject should be excluded.