Lenvatinib Plus PD-1 Antibody for Unresectable ICC

Inclusion Criteria: * The diagnosis of ICC * Patients must have at least one tumor lesion that can be accurately measured according to mRECIST criteria. * Chemotherapy resistance or patient refuse chemotherapy * No Cirrhosis or cirrhotic status of Child-Pugh class A only * Not amendable to surgical resection ,local ablative therapy and any other cured treatment. * Without distant metastasis, but intrahepatic lymph node metastasis is allowed * The following laboratory parameters: Platelet count ≥ 50,000/μL Hemoglobin ≥ 8.5 g/dL Total bilirubin ≤ 30mmol/L Serum albumin ≥ 32 g/L ASL and AST ≤ 6 x upper limit of normal Serum creatinine ≤ 1.5 x upper limit of normal INR ≤ 1.5 or PT/APTT within normal limits Absolute neutrophil count (ANC) \>1,500/mm3 Exclusion Criteria: * Evidence of hepatic decompensation including ascites, gastrointestinal bleeding or hepatic encephalopathy * Known history of HIV * History of organ allograft * Known or suspected allergy to the investigational agents or any agent given in association with this trial. * Cardiac ventricular arrhythmias requiring anti-arrhythmic therapy * Evidence of bleeding diathesis. * Patients with clinically significant gastrointestinal bleeding within 30 days prior to study entry. * Known central nervous system tumors including metastatic brain disease