CD274 and head and neck squamous cell carcinoma: 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).