SLA2 and head and neck squamous cell carcinoma: Therefore, in this study, a variety of bioinformatics methods were used to explore the potential oncogenic mechanism of Src-like adaptor 2 gene (SLA2) in HNSCC, and the Cancer Genome Atlas (TCGA), Tumor Immune Estimation Resource (TIMER), Gene Expression Profile Interaction Analysis (GEPIA) and LinkedOmics data sets were extracted and analyzed.