Certain markers were associated with tumor localization: CD57 higher density was seen in oropharyngeal tumors (p=0.0007), CD4 lower density was seen in laryngeal tumors (p=0.03) and lower CTLA4 tumor cell expression in laryngeal carcinomas (p=0.04). This evidence concerns the gene B3GAT1 and neoplasm of oropharynx.