Chemotherapy and other systemic therapies for hepatocellular carcinoma and liver metastases

For hepatocellular carcinoma (HCC) that has advanced to the point that it is no longer amenable to local therapies, systemic therapy can be considered in select patients who have a good performance status. No systemic therapy has been clearly shown to improve overall survival compared with supportive care alone, although cancer-related symptoms can sometimes be palliated with therapy and some objective responses are seen. Systemic therapies for HCC include chemotherapy, both intravenous and infused via the hepatic artery, as well as hormonal therapy, immunotherapy, and targeted biologic agents. Colorectal, pancreatic, breast, and lung cancer are some of the most common tumors that metastasize to the liver. Response rates and effect on overall survival as a result of systemic therapy for liver metastases vary widely depending on primary tumor site. Targeted biologic agents are being integrated into standard treatment regimens for all of these cancer types, with variable effects on survival and other outcomes for all affected patients including those with liver metastases.