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A tumor marker is a biomarker that can be used to indicate the presence of cancer or the behavior of cancers (measure progression or response to therapy). They can be found in bodily fluids or tissue .
This tumor marker can be detected in the blood, saliva, or urine. [17] The possibility of identifying an effective biomarker for early cancer diagnosis has recently been questioned, in light of the high molecular heterogeneity of tumors observed by next-generation sequencing studies. [23]
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.
Biomarkers found in blood, urine, or body tissues that can be introduced or elevated by the presence of one or more types of cancer. Pages in category "Tumor markers" The following 45 pages are in this category, out of 45 total.
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]
CEA measurement is mainly used as a tumor marker to monitor colorectal carcinoma treatment, to identify recurrences after surgical resection, for staging or to localize cancer spread through measurement of biological fluids. [11]
Examples of tumoral markers used to follow up cancer treatment are the Carcinoembryonic Antigen (CEA) for colorectal cancer and the Prostate Specific Antigen (PSA) for prostate cancer. [34] In 2014, Cancer research identified Circulating Tumor Cells (CTCs) and Circulating Tumor DNA (ctDNA) as metastasizing tumor biomarkers with special cellular ...
During EMT, epithelial markers like E-cadherin are downregulated, while mesenchymal markers such as N-cadherin and vimentin are upregulated. This change enables cancer cells to detach from the primary tumor, invade surrounding tissues, and ultimately spread to distant locations in the body by entering the bloodstream or lymphatic pathways. [16]
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