HGF and hepatocellular carcinoma: Nine serum cytokines (angiopoietin-2 (Ang-2), follistatin, granulocyte colony stimulating factor (G-CSF), hepatocyte growth factor (HGF), interleukin-8 (IL-8), leptin, PDGF-BB, platelet endothelial cell adhesion molecule-1 and VEGF) were measured in 30 HCC-patients treated with sorafenib.