No consistent tendency of other EMT-related proteins (N-cadherin, β-catenin, Slug, and ZEB1) was observed in three cell lines in the presence and absence of Src inhibitors, excluding their common functions in drug-induced diminishment of EMT traits in mesenchymal-like HNSCC cells (Fig. 2a). The gene discussed is ZEB1; the disease is head and neck squamous cell carcinoma.