Exposing ovarian cancer cell lines to ERK 1/2, AKT and STAT3 inhibitors for 48 h, resulted in a significant change in SNAIL 1 and SNAIL 2 expression in all ovarian cancer cell lines, however, this effect depended on the kind of inhibited signaling protein, as well as on the type of cell line. Here, STAT3 is linked to ovarian cancer.