Next, we examine the combination of the ferroptosis inducer with an anti‐PD‐L1 antibody (αPD‐L1) in a syngeneic murine HNSCC model MOCL2 cell line/C57BL6/J mice.[33] Activation of NF‐κB and induction of PD‐L1 expression by sublethal FIN56 was validated in MOCL‐2 cells in vitro (Figure S9A–C, Supporting Information). Here, NFKB1 is linked to head and neck squamous cell carcinoma.