The MSI and CIMP phenotype, as well as the BRAFV600E mutation, and MLH1 methylation were significantly statistically associated with right-sided tumor location (p<0.01, p<0.01, p<0.01 and p = 0.01 for MSI, CIMP, BRAFV600E and MLH1 meth, respectively, using Fishers exact test). This evidence concerns the gene MLH1 and neoplasm.