More importantly, we showed that TRF1 genetic deletion significantly impairs tumor growth in both p53‐deficient K‐RasG12V‐induced lung tumors and glioblastoma mouse models, in a manner that is independent of telomere length (Garcia‐Beccaria et al, 2015; Bejarano et al, 2017). This evidence concerns the gene TP53 and glioblastoma.