PTK2 and familial pancreatic carcinoma: After treated/untreated with FAK siRNA or control siRNA, pancreatic cancer cells were incubated with/without anti-β1 integrin antibody for 24 h, and then terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) assay was performed to investigate whether knockdown of FAK expression and β1 integrin blocking had any effects on pancreatic cancer apoptosis.