F2R and neoplasm: To assess the effect of PAR1 expression on tumor cells and the suspected counterbalancing activity, cells derived from p48-CRE/LSL-KRAS/P53flox/flox mice (named KP hereafter) and Panc02 murine pancreatic cancer cells were transduced with short hairpin RNA against PAR1 (shPAR1) or with control short hairpin RNA (shCtrl).