PTK2 and exocrine pancreatic carcinoma: To understand the role of VASP overexpression in β1-integrin-FAK signaling and YAP1/TAZ, we used WB to quantitate VASP protein levels in multiple cell lines and found that Hs766T (human pancreatic carcinoma cell line) and SW620 (human colorectal adenocarcinoma cell line) express relatively low levels of VASP (Suppl.