Changes of cytokines in patients with liver cirrhosis and advanced hepatocellular carcinoma treated by sorafenib

Abstract

Recently, the oral multikinase inhibitor sorafenib has been used to treat advanced hepatocellular carcinoma (aHCC). Tumor necrosis factor (TNF) induces apoptosis of tumor cells by binding to TNF-related apoptosis-inducing ligand, while binding of the Fas ligand on cytotoxic T lymphocytes to the Fas receptor on hepatocytes also causes apoptosis. The aim of this study was to retrospectively evaluate changes of cytokines in patients with liver cirrhosis (LC) and aHCC receiving sorafenib therapy. Fifty-seven adult Japanese LC patients received sorafenib for aHCC (200-800mg/day for 4weeks) between 2009 and 2012 at our hospital. Blood samples were collected in the early morning before and after treatment, and the serum levels of soluble TNF-alpha (sTNF-alpha), soluble TNF receptor (sTNF-R), soluble Fas ligand (sFas L), and soluble Fas (sFas) were evaluated. Ten patients were treated with sorafenib at 200mg/day (200mg group), 37 patients were given 400mg/day (400mg group), and 10 patients received 800mg/day (800mg group). The serum level of sTNF-alpha was significantly increased after treatment compared with before treatment in the 400 and 800mg groups. The serum level of sTNF-R also showed a significant increase after treatment in the 400mg group, although there was no significant difference of sTNF-R between before and after treatment in the 200 and 800mg groups. sFas showed a significant decrease after treatment compared with before treatment in the 400 and 800mg groups, although the serum level of sFas L never exceeded 0.15ng/ml. These findings suggest that treatment with sorafenib at doses ≥400mg/day might promote TNF-related or Fas-related apoptosis by increasing the circulating level of TNF-alpha or decreasing that of sFas.