ITGAL and head and neck squamous cell carcinoma: Through the integration and exploration of the TCGA and GTEx databases, we acquired the expression levels of ITGAL across multiple cancer types, providing evidence that ITGAL is overexpressed in 18 different tumors such as GBM, GBMLGG, LGG, BRCA, CESC, ESCA, STES, KIRP, KIPAN, STAD, HNSCC, KIRC, LIHC, SKCM, OV, PAAD, TGCT, LAML (Figure 1; Table 1).