Chidamide Combined With Chemotherapy and Immunotherapy as First-line Treatment for Advanced Intrahepatic Cholangiocarcinoma

This is a single-center, open-label, phase II clinical trial designed to evaluate the efficacy and safety of chidamide in combination with chemotherapy and immunotherapy as a first-line treatment for patients with advanced intrahepatic cholangiocarcinoma (ICC), a type of liver cancer. The study will enroll approximately 35 patients with histologically or pathologically confirmed unresectable or metastatic ICC who have not received prior systemic therapy. All participants will receive chidamide, an oral HDAC inhibitor, in combination with gemcitabine, cisplatin, and an immune checkpoint inhibitor. Treatment will be administered in 21-day cycles until disease progression, unacceptable toxicity, or other withdrawal criteria are met. The primary study endpoints are objective response rate (ORR), and safety, evaluated by the frequency and severity of adverse events. Secondary endpoints include progression-free survival (PFS), duration of response (DOR), overall survival (OS), and exploratory biomarker analyses. The study aims to assess whether the addition of chidamide to standard chemotherapy and immunotherapy can improve treatment outcomes in this patient population.

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