DUSP6 and endometrial cancer: In contrast to our findings, Fan et al. reported that DUSP6 inhibits EMT in the endometrial cancer cell line Ishikawa, by inhibiting migration and invasion.49 In their study, the viability of DUSP6‐knockdown cells was increased significantly compared to control cells, whereas in our study, the proliferation of DUSP6‐knockdown cells was slightly decreased (Supporting Information Fig. S5).