CISD2 and head and neck squamous cell carcinoma: We obtained immunohistochemical staining images of the protein expression of 15 PR-DE-FRGs (ASNS, AURKA, FTH1, SLC2A3, SLC7A5, CISD2, PRDX6, ATG5, BAP1, MAP1LC3A, SOCS1, BNIP3, MAP3K5, ZFP69B, and FBXW7) in HNSCC and normal tissues of the head and neck (Figure 13).