CEACAM5 and cancer: A very limited number of studies have examined cancer biomarkers in cervicovaginal secretions [IL-6, IL-8, CA 125, carcinoembryonic antigen (CEA), and squamous cell carcinoma antigen (SCC-Ag)]35–37, although numerous reports showed that several of these biomarkers were significantly elevated in serum and/or biopsies collected from patients with invasive cervical carcinoma.