CHEK1 and colorectal carcinoma: Since we provided evidence of miltefosine‐sensitizing CRC cells against genotoxic stress, such as RT and chemotherapy (Figures 1H and Supplementary Figures S1E and S1F), we examined whether miltefosine and CHEK1 inhibitors can sensitize CSCs against genotoxic stress and stimulate CSCs to enter mitotic catastrophe.