This clinical study is a prospective, multicenter, randomized, controlled study evaluating SIR-Spheres Y-90 resin microspheres followed by cisplatin-gemcitabine (CIS-GEM) chemotherapy vs. CIS-GEM chemotherapy alone as first-line treatment of patients with unresectable intrahepatic cholangiocarcinoma.~Randomized patients will be followed until death, withdrawal of consent, or until end of study.
The study will evaluate the benefit of applying Selective Internal Radiation Therapy (SIRT) using SIR-Spheres Y-90 resin microspheres prior to receiving systemic chemotherapy treatment (cisplatin-gemcitabine, or CIS-GEM) in patients with unresectable intrahepatic cholangiocarcinoma. Half of the patients will be randomized to CIS-GEM chemotherapy plus SIRT, and half of the patients will be randomized to CIS-GEM alone.