KRT20 and colorectal carcinoma: Compared with other techniques aiming to detect CTC upon isolation and enrichment, our CTC detection methodology developed for metastatic CRC patients demonstrated to be superior to CK20 RT-PCR (AUROC: 0.672; [17]), or to the CellSearch system when the group of metastatic patients was compared with localized disease (AUROC: 0.79; [18]).