HGF and cancer: Kasai et al. suggested that the hepatocyte growth factor (HGF) and the MET receptor play major roles and are the main causes of peritoneal carcinomatosis and ascites, while Miki et al. established that FG7, secreted by stromal fibroblasts, promotes tumor progression and increases the invasion and migration of cancerous cells through the THBS-1 pathway in cancer cells with FGFR2 amplification [10,14,18].