Abstract
Cholangiocarcinoma (CCA) is an uncommon but morbid cancer arising from the intrahepatic
or extrahepatic bile ducts. CCA is frequently asymptomatic at early stages and is
often unresectable or metastatic at the time of initial diagnosis. While chemotherapy
remains the mainstay of treatment for most patients with advanced disease, the addition
of immunotherapy to frontline treatment has improved survival and provided an alternative
to perpetual chemotherapy. Furthermore, a variety of targeted therapies have demonstrated
benefit in patients with specific biomarkers including FGFR2 fusions, IDH1 mutations, HER2 overexpression, and tumor agnostic markers such as NTRK and RET fusions, among others. This review will summarize the established roles of immunotherapy,
targeted therapies, and their combinations in CCA as well as treatment strategies
that are under development with potential to impact clinical practice in the coming
years.
Keywords
cholangiocarcinoma - biliary tract cancer - immunooncology - precision medicine