The expression of ABCC3, AMT and PCFT (p < 0.0001) was higher in mucosa compared to the tumor tissue, whereas the expression of FPGS (p < 0.0001), GGH (p < 0.0001), MFT (p < 0.01), RFC-1 (p < 0.0001) and TYMS (p < 0.0001) was lower in mucosa compared to the tumor tissue. Here, GGH is linked to neoplasm.