EIF2S2 and EIF2S3, encoding subunits β and γ, are also highly expressed in HNSCC (p < 1 × 10−12 and p = 3.69 × 10−14, respectively) (Figure 1A, Supplementary Figures S1.1 and S1.2). This evidence concerns the gene EIF2S3 and head and neck squamous cell carcinoma.