“…The extent of angiogenesis is frequently related to cancer progression and in some cases may predict the probability of metastasis (Srivastava et al, 1988;Weidner et al, 1991). This linkage paved the way to clinical trials with antiangiogenic agents, which in some cases have dramatically changed the standards of care (Miller et al, 2005a, b;Motzer and Bukowski, 2006;Varker et al, 2007). In particular, bevacuzimab/avastin, a humanized monoclonal-neutralizing antibody directed against vascular endothelial growth factor has since 2004 become incorporated into the first-line therapies in metastatic colorectal carcinoma (CRC) (Hurwitz et al, 2004) and other malignancies (Gasparini et al, 2005).…”