Tambon Mueang Tai

Researchers are evaluating the safety and effectiveness of combining trastuzumab deruxtecan (T-DXd) with rilvegostomig compared to standard treatments in patients with advanced HER2-expressing biliary tract cancer who have not received prior therapy. This phase 3 study focuses on patients with locally advanced or metastatic disease and aims to measure overall survival and safety outcomes. Participants will receive one of the following treatments: the experimental combination of T-DXd and rilvegostomig by intravenous infusion, T-DXd alone, or a standard care regimen consisting of gemcitabine, cisplatin, and durvalumab given intravenously. The study includes a safety run-in period to assess tolerability of the combination, followed by a randomized phase where patients receive assigned treatments. Each treatment cycle lasts 21 days. During the study, participants will be closely monitored through clinical assessments, laboratory tests, and imaging to evaluate tumor response and safety. Researchers will track overall survival from the time of treatment initiation until death from any cause, with follow-up estimated up to 50 months. Additional assessments include performance status, organ function, and tumor tissue analysis to confirm HER2 expression and other markers. Safety and side effects will be continuously evaluated throughout the study.