Moreover, conditioned medium (CM) from KRAS mutant, but not wild type, tumor cells increased the sensitivity of Day‐1 T‐cells to AICD (Figure 5G), but this effect was significantly blocked when KRAS mutant tumor cells were pretreated with sodium dichloroacetate (DCA) to abolish lactic acid production (Figure S4B, Supporting Information; Figure 5H). This evidence concerns the gene KRAS and neoplasm.