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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.
breast cancer [9] CA27.29: breast cancer [10] CA19-9: Mainly pancreatic cancer, but also colorectal cancer and other types of gastrointestinal cancer. [11] CA-125: Mainly ovarian cancer, [12] but may also be elevated in for example endometrial cancer, fallopian tube cancer, lung cancer, breast cancer and gastrointestinal cancer. [13] Calcitonin
Diagnostic Procedures includes initially ultrasound or colour doppler study to know about size and nature of mass and sometimes CECT. Blood investigation includes CA-125 level for screening and further CEA, beta hCG levels, AFP, CA19-9, LDH level to confirm diagnosis. And before going to surgery routine investigation to be done.
However, treatment based only on elevated CA-125 levels and not any symptoms can increase side effects without any prolongation of life, so the implication of the outcome of a CA-125 test can be discussed before taking it. [123] The recommendation as of 2014 is recurrent cancer may be present if the CA-125 level is twice normal. [28]
More specifically, optimal levels are generally close to a central tendency of the values found in the population. However, usual and optimal levels may differ substantially, most notably among vitamins and blood lipids, so these tables give limits on both standard and optimal (or target) ranges.
The one biomarker that has been in use over the last 20 years is CA-125. [121] A 2016 review found that this biomarker was present in those with symptoms of endometriosis; and, once ovarian cancer has been ruled out, a positive CA-125 may confirm the diagnosis. [122] Its performance in ruling out endometriosis is low. [122]
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