Abstract
The development of human anti-mouse antibodies (HAMA) is a common immune response in patients with ovarian carcinoma after repeated injections of murine anti-CA 125 monoclonal antibodies for immunoscintigraphy. As a tumor marker with significant diagnostic value CA 125 is routinely measured in the follow-up of tumor patients by immunoradiometric assays (IRMA) based on murine anti-CA 125 monoclonal antibodies. HAMA may cause false-positive findings in a CA 125-IRMA. In this report our group demonstrates a simple way of eliminating HAMA by protein A/G affinity chromatography allowing the reliable detection of the tumor marker CA 125 in the serum of patients with ovarian carcinoma.
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