This phase II trial studies how well gemcitabine, cisplatin, nab-paclitaxel and durvalumab work before surgery in treating participants with Biliary Tract Cancer. The international multicenter phase III clinical study TOPAZ-1 has confirmed that durvalumab combined with gemcitabine and cisplatin can bring survival benefits to advanced BTC. Drugs used in chemotherapy, such as nab-paclitaxel, cisplatin, and gemcitabine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving combination chemotherapy and Durvalumab before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed.
The pathological diagnosis has confirmed biliary tract malignancy;pathological evidence may be obtained from biopsy/puncture, surgical resection specimens, or a formal pathology report.
T-stage ≥ Ib (Ib-IV)
Solitary lesion > 5 cm
Multifocal tumors or satellite lesions present confined to the same lobe of the liver as the dominant lesion but still technically resectable
Patients who received PD-1, PD-L1, PD-L2, CTLA-4 inhibitors before enrollment, or patients who directly received another stimulatory or co inhibitory T cell receptor (such as CTLA-4, CD137);
Used any other research drugs within 4 weeks before enrollment;
Any active autoimmune disease or history of autoimmune disease (such as interstitial pneumonia, uveitis, enteritis, hepatitis, hypophysitis, vasculitis, myocarditis, nephritis, hyperthyroidism, hypothyroidism after hormone replacement therapy); Patients with childhood asthma who have completely alleviated and do not need any intervention or leukorrhea after adulthood can be included, but patients who need medical intervention with bronchodilators cannot be included;
With congenital or acquired immune deficiency, such as people infected with human immunodeficiency virus (HIV), active hepatitis B (HBV DNA 500IU/ml), hepatitis C (hepatitis C antibody is positive, and HCV-RNA is higher than the detection limit of the analytical method) or people with hepatitis B and hepatitis C co infection;