Carcinoembryonic antigen-associated cell adhesion molecule 5 (CEACAM5), a highly glycosylated protein of the CEACAM family, increased its expression in the human breast, stomach, colorectal, and non-small-cell lung carcinoma cancers by promoting the proliferation and migration of cancer cells to promote the progression of the tumor [62–65]. Here, CEACAM5 is linked to cancer.