FN1 and neoplasm: We are proposing that increasing the serum level of galectin-1 may favor metastasis by the following-mentioned modalities: (a) enhancing the adhesive interactions between tumor cells and the extracellular matrix proteins, such as laminin, fibronectin, and vitronectin [37]; (b) promoting tumor cell embolization through increased cell adhesion and dissemination of tumor cells in the circulation [38, 39]; (c) elevating tumor vascular permeability [40]; and (d) conferring a selective survival advantage to metastatic cells (anoikis) [19, 41, 42].