Various types of oral tumors and control samples (normal squamous epithelium, hyperplasia, cancer adjacent oral tissue, non-neoplastic oral cavity glands, adenoid cystic carcinoma, mucoepidermoid carcinoma, adamantinoma, basal cell carcinoma, OSCC, and acinic cell carcinoma) were analyzed to determine the expression of GSK3α/β by IHC (summarized in Table 1). This evidence concerns the gene GSK3A and basal cell carcinoma.