Our group and others have recently described that the TRF1‐interacting protein POT1 is often mutated in familiar glioblastoma cases as well as other tumor types (Newey et al, 2012; Ramsay et al, 2013; Robles‐Espinoza et al, 2014; Shi et al, 2014; Zhang et al, 2014; Bainbridge et al, 2015; Calvete et al, 2015). Here, POT1 is linked to glioblastoma.