YAP1 and glioblastoma: Given the strong implication of Yap1 in brain tumor initiation, we finally scored control and Yap1‐5SA‐expressing cells for their expression of glioblastoma stem cell‐related genes (glioblastoma stem cell‐like signature; Castellan et al, 2021), such as the Yap1 paralogue transcriptional regulator Taz and some of their primary downstream transcriptional regulators (Fig 4F).