A549 cells were transiently transfected with the indicated siRNA (control and KPT conditions = siNT) at low or high confluence. Forty‐eight hours later, cells were incubated overnight in the presence of XPO1 inhibitors KPT‐185 and KPT‐330 (final concentration = 1 μM) or with DMSO for all other conditions. The next day, cells were fixed and stained for endogenous YAP1. Representative images are shown, and scale bars are 40 μm (see
Appendix Fig S7A for STK38 silencing).