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Elevated CEA levels should return to normal after successful surgical removal of the tumor and can be used in follow up, especially of colorectal cancers. [15] CEA elevation is known to be affected by multiple factors. It varies inversely with tumor grade; well-differentiated tumors secrete more CEA.
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 ...
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]
CA19-9 can be elevated in many types of gastrointestinal cancer, such as colorectal cancer, esophageal cancer and hepatocellular carcinoma. [1] Apart from cancer, elevated levels may occur in pancreatitis, cirrhosis, [1] and diseases of the bile ducts. [1] [3] It can also be elevated in people with obstruction of the bile ducts. [3]
Tumor M2-PK can be elevated in many tumor types, rather than being an organ-specific tumor marker such as PSA. Increased stool (fecal) levels are being investigated as a method of screening for colorectal tumors , and EDTA plasma levels are undergoing testing for possible application in the follow-up of various cancers .
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.
Serum levels of carcinoembryonic antigen (CEA) and CA19-9 are often elevated, but are not sensitive or specific enough to be used as a general screening tool. They may be useful in conjunction with imaging methods in supporting a suspected diagnosis of cholangiocarcinoma. [48]
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