BCL2 and cancer: Even though BCL2 overexpression can protect cancer cells effectively from mitotic death 52, 90, combinatorial treatment of anti‐mitotic drugs with inhibitors selectively targeting individual BCL2 family proteins suggests that, at least in epithelial cancer cells, BCLX is more critical than BCL2 for survival during and possibly after slipping from extended mitotic arrest 81, 89, 93, 108.