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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]
CA19-9 (carbohydrate antigen 19.9) is a tumor marker that is frequently elevated in pancreatic cancer. However, it lacks sensitivity and specificity , not least because 5% of people lack the Lewis (a) antigen and cannot produce CA19-9.
germ cell tumor, hepatocellular carcinoma [9] CA15-3: breast cancer [10] CA27.29: breast cancer [11] CA19-9: Mainly pancreatic cancer, but also colorectal cancer and other types of gastrointestinal cancer. [12] CA-125
A reference range is usually defined as the set of values 95 percent of the normal ... like rheumatoid factor and CA19-9, ... CA19-9: 40 [15] U/mL: Pancreatic cancer ...
CA 242 is a tumor marker for sialylated Lewis carbohydrates associated with adenocarcinomas and e-selectin-mediated metastatic risk. [1] [2] [3] It is commonly tested along with CEA, CA19-9, and CA242 for detecting pancreatic cancer. [4]
The National Cancer Institute (NCI), in particular, defines biomarker as a: “A biological molecule found in blood, other body fluids, or tissues that is a sign of a normal or abnormal process, or of a condition or disease. A biomarker may be used to see how well the body responds to a treatment for a disease or condition.