Hepatic Arterial Infusion Chemotherapy (HAIC) Combined With Durvalumab and Lenvatinib in Patients With Locally Advanced or Metastatic Intrahepatic Cholangiocarcinoma: a Phase 2 Study(HAIC-quad Trial)

Durvalumab: During combination therapy: 1500 mg, Q3W, during combination therapy, on days 3-5 of each 3-week cycle (determined by the investigator); during maintenance therapy: 1500 mg Q4W

hepatic arterial infusion chemotherapy (HAIC) : GemCis regimen was adopted, with the specific regimen as follows: cisplatin 60 mg/m2 on the first day, arterial infusion for half an hour, gemcitabine 1000 mg/m2 on the first day, arterial infusion for half an hour, repeated once every 3 weeks, and 4-6 cycles of treatment (the specific number of cycles was determined by the investigator according to the patient's condition).

Lenvatinib 8mg (weight \<60 kg) or 12mg (weight ≥60 kg) oral QD, during combination therapy, starting on day 3 of each 3-week cycle (determined by the investigator)