ANTITUMOR AGENT FOR BILIARY CANCER AND TREATMENT METHOD OF BILIARY CANCER

摘要

The purpose of the present invention is to provide an antitumor agent for biliary cancer which exhibits an effect against biliary cancer, and a treatment method of biliary cancer. An antitumor agent for biliary cancer is provided that contains 1-(2-deoxy-2-fluoro-4-thio-β-D-arabinofuranosyl)cytosine or a salt or a prodrug thereof.