Of note, while anti‐PD‐1 treatment increases the number of CD8+ TILs recovered from the tumor mass (per mm3), this effect is not observed in Drp1‐cKO mice (Fig. 4E), indicating that Drp1 is required to mediate such anti‐PD‐1‐dependent increase in CD8+ TILs accumulation. Here, PDCD1 is linked to neoplasm.