ZEB2 and head and neck squamous cell carcinoma: Complementarily, positive correlations between ZEB2‐AS1 and ZEB2 mRNA in HNSCC cell lines and samples, markedly reduced ZEB2 upon ZEB2‐AS1 depletion as well as similar phenotypic changes upon ZEB2 or ZEB2‐AS1 depletion provided experimental support to this regulatory model.