PCI Treatment/Gemcitabine & Chemotherapy vs Chemotherapy Alone in Patients With Inoperable Extrahepatic Bile Duct Cancer

Cholangiocarcinoma (CCA) is an uncommon adenocarcinoma arising from cells lining the bile ducts. Standard treatment options for CCA include surgery, radiotherapy and chemotherapy, dependent upon if the CCA is intra- or extra-hepatic. Surgical removal of the tumor is the only potential cure, and CCA is very resistant to standard pharmaceutical drug treatment, though chemotherapy has some effect. Current chemotherapy uses cisplatin plus gemcitabine. Photochemical internalisation (PCI) is a novel technology, where photochemical reactions are used to enhance the effect of drugs by increasing their ability cross cell membranes to interact with their intended target. This study will assess the safety and effectiveness of fimaporfin-induced PCI of gemcitabine complemented by systemic gemcitabine/cisplatin chemotherapy compared to gemcitabine/cisplatin alone, in patients with inoperable CCA. NOTE: Participants are no longer being recruited to this study.