Sorafenib and cisplatin plus gemcitabine currently represent first-line treatment standards in advanced hepatocellular carcinoma and biliary cancer, respectively. Conventional cytotoxic agents (monotherapy or combination therapy) have demonstrated activity in the second-line setting or in those in which first-line agents are contraindicated. A strategy for safe yet effective administration of such systemic therapies in patients with advanced hepatobiliary cancer and abnormal liver function needs to be strongly considered. Here, we highlight the safety and tolerability of systemic therapies routinely used for the treatment of advanced hepatobiliary cancer in patients with hepatic dysfunction. Based on data from available clinical studies, we review dosing strategies recommended for chemotherapy and targeted therapy in those with liver dysfunction. Dose modifications for many agents in this population remain empiric due to limited clinical evidence. Future dedicated phase I studies are needed to provide further dosing considerations for combination therapy in those with abnormal liver function in which data is lacking. J Gastrointest Oncol 2017;8(2):314-323 jgo.amegroups.com considered a standard therapy in inoperable HCC, doxorubicin demonstrated significant toxicities (neutropenia and cardiotoxicity) that outweighed its modest benefits in this population (18). Moreover, FOLFOX represents a more preferred first-line option over doxorubicin given the improved progression-free survival (PFS) and overall response rates (ORRs) seen with FOLFOX4 vs. single-agent doxorubicin in a phase III trial involving Asian patients with advanced HCC (19).The majority of patients with HCC and biliary cancer present with advanced disease (20,21). The intrinsic liver dysfunction associated with hepatobiliary cancer often presents a challenge to the administration of the aforementioned systemic therapies in the treatment of advanced disease. In addition, chemotherapy and targeted therapy-induced hepatotoxicity can further complicate the treatment in these patients. The potential toxic effects of chemotherapy (including the majority of agents used in the treatment of advanced hepatobiliary cancer) on the liver have been extensively reviewed (22,23). Instead, this review will focus on dosage considerations for chemotherapy and targeted therapy in patients with abnormal hepatic function. Specifically, we review available clinical data that offer recommendations for dosing strategies, in the setting of liver dysfunction, of systemic therapies used in treating advanced hepatobiliary cancer.
Chemotherapy and targeted therapy in patients with liver dysfunctionThere is a growing body of clinical evidence to recommend dosing guidelines based on serum liver biochemical tests involving agents used in the treatment of advanced hepatobiliary cancer in patients with liver dysfunction (Tables 1-3).
GemcitabineAn early phase I trial investigated gemcitabine at a starting dose of 800 mg/m 2 30-minute infusion every week for 3 weeks followed ...