It has been previously shown that holothurian lectin MBL-AJ interacts with the promising cancer biomarkers in the following order of the lectin-binding affinity: CEA, embryonic α-1-acid glycoprotein, trophoblast-specific β1-glycoprotein and α-fetoprotein isolated from the abortive and retroplacental blood [13], [30], [31], [32]. Here, CEACAM5 is linked to cancer.