SLC28A1 and colon adenocarcinoma: To ascertain the possible cause of the diminished expression of hCNT1 in cancer, we looked for the presence of mutations and alterations in methylation in the SLC28A1 gene by analyzing data from the TCGA-COAD (colon adenocarcinoma) and TCGA-PAAD (pancreatic adenocarcinoma) projects.