FN1 and ovarian cancer: The ability of ovarian cancer cells to adhere to a secondary site is extremely important in ovarian cancer metastasis because of the unique dissemination process of shedding into peritoneal fluid.31 During the adhesion assays, we noted that the A2780-cis cell line did not adhere to collagen but only fibronectin, whereas the A2780 adhered to both extracellular matrix components.