Cystine (CySS)/glutamate system xCT (SLC7A11) imports one of the building blocks of GSH, and tumor cells with high levels of GSH and high xCT expression are more resistant to APR‐246 (Mohell et al, 2015; Liu et al, 2017; Mlakar et al, 2019). Here, SLC7A11 is linked to neoplasm.