No association was found between the gene expression levels, age, gender, smoking status, alcohol consumption status, TNM staging, histological grading and LTF polymorphisms in the tumour and margin samples, which could mean that the rs2073495 and rs4637321 polymorphisms caused a difference in the stability and activity of the LTF protein in the absence of changes in the expression of the gene. Here, LTF is linked to neoplasm.