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CA-125 was initially detected using the murine monoclonal antibody designated OC125. Robert Bast, Robert Knapp and their research team first isolated this monoclonal antibody in 1981. [28] The protein was named "cancer antigen 125" because OC125 was the 125th antibody produced against the ovarian cancer cell line that was being studied. [29]
Mainly pancreatic cancer, but also colorectal cancer and other types of gastrointestinal cancer. [12] CA-125: Mainly ovarian cancer, [13] but may also be elevated in for example endometrial cancer, fallopian tube cancer, lung cancer, breast cancer and gastrointestinal cancer. [14] Calcitonin: medullary thyroid carcinoma [15] Calretinin
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 .
Cancer/testis (CT) antigens are a group of proteins united by their importance in development and in cancer immunotherapy. In general, expression of these proteins is restricted to male germ cells in the adult animal. However, in cancer these developmental antigens are often re-expressed and can serve as a locus of immune activation.
These tumors frequently co-occur with endometriosis or endometrial cancer. [29] [79] Cancer antigen 125 levels are typically elevated and a family history of a first degree relative with endometrioid ovarian cancer is associated with increased risk of developing endometrioid ovarian cancer. [79] The average tumor size is larger than 10 cm. [79]
Carbohydrate antigen 19-9 (CA19-9), also known as sialyl-Lewis A, is a tetrasaccharide which is usually attached to O-glycans on the surface of cells. It is known to play a role in cell-to-cell recognition processes. It is also a tumor marker used primarily in the management of pancreatic cancer. [1]
Lactate dehydrogenase, alkaline phosphatase and cancer antigen 125 might potentially increase as well. [24] To visualize the location and morphology of the tumor, transvaginal ultrasonography is usually employed. [1] The most characteristic appearance is a parenchymal-like heteroechoic mass with sharp borders and high vascularization. [1]
In humans, the carcinoembryonic antigen family consists of 29 genes, 18 of which are normally expressed. [25] The following is a list of human genes which encode carcinoembryonic antigen-related cell adhesion proteins: CEACAM1, CEACAM3, CEACAM4, CEACAM5, CEACAM6, CEACAM7, CEACAM8, CEACAM16, CEACAM18, CEACAM19, CEACAM20, CEACAM21
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