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Carcinoembryonic antigen (CEA) describes a set of highly-related glycoproteins involved in cell adhesion. CEA is normally produced in gastrointestinal tissue during fetal development, but the production stops before birth. Consequently, CEA is usually present at very low levels in the blood of healthy adults (about 2–4 ng/mL). [2]
n/a Ensembl ENSG00000105388 n/a UniProt P06731 n/a RefSeq (mRNA) NM_001291484 NM_001308398 NM_004363 n/a RefSeq (protein) NP_001278413 NP_001295327 NP_004354 n/a Location (UCSC) Chr 19: 41.71 – 41.73 Mb n/a PubMed search n/a Wikidata View/Edit Human Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) also known as CD66e (C luster of D ifferentiation 66e), is a member of the ...
Acid–base and blood gases are among the few blood constituents that exhibit substantial difference between arterial and venous values. [6] Still, pH, bicarbonate and base excess show a high level of inter-method reliability between arterial and venous tests, so arterial and venous values are roughly equivalent for these. [44]
A second marker, carcinoembryonic antigen (CEA), also produced by medullary thyroid carcinoma, is released into the blood and it is useful as a serum or blood tumor marker. In general, measurement of serum CEA is less sensitive than serum calcitonin for detecting the presence of a tumor, but has less minute to minute variability and is ...
No screening test is wholly specific, and a high level of tumor marker can still be found in benign tumors. The only tumor marker currently used in screening is PSA (prostate-specific antigen). Diagnostics; Tumor markers alone can't be used for diagnostic purposes, due to lack of sensitivity and specificity. [5]
The objective of this study was to compare different tumor markers and their diagnostic value. The tumor markers tested in this experiment were CA 19-9, CA 242 and CEA tumor markers. The data revealed that although each marker have its own level of specificity and correspond to a cancer, all three makers together increase diagnostic value. [7]
Another example is carcinoembryonic antigen, which is elevated in people with colon cancer and other tumors. Other oncofetal antigens are trophoblast glycoprotein precursor [1] and immature laminin receptor protein (also known as oncofetal antigen protein). Oncofetal antigens are promising targets for vaccination against several types of cancers.
Tumor antigen is an antigenic substance produced in tumor cells, i.e., it triggers an immune response in the host. Tumor antigens are useful tumor markers in identifying tumor cells with diagnostic tests and are potential candidates for use in cancer therapy. The field of cancer immunology studies such topics.
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