The role of the free beta subunit of human chorionic gonadotropin in human malignancy

Publisher:
Elsevier
Publication Type:
Chapter
Citation:
100 Years of Human Chorionic Gonadotropin Reviews and New Perspectives, 2020, 1
Issue Date:
2020-01-01
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Detection of an elevated level of placental derived β-subunit of human chorionic gonadotropin hormone (hCGβ) in blood or urine is used clinically for the confirmation of pregnancy. Ectopic production of hCGβ is also seen in some cancers where it can be associated with aggressive and metastatic disease, as well as resistance to radiotherapy and chemotherapy. Measurement of hCGβ, or its metabolic product β-core fragment, in serum, ascites, urine and tumour tissue, shows potential as a diagnostic and/or prognostic biomarker for some cancers. Studies in model systems have shown that elevated levels of hCGβ may increase the tumorigenic behaviour of cells by activating oncogenes and increasing proliferation, migration and invasion. The potential tumorigenic role of ectopic hCGβ has identified it as an immunotherapy target for some non-trophoblastic cancers. We discuss cancer-associated functions of hCGβ, its value as a biomarker for diagnosis, management and prognosis, and its potential as a therapeutic target.
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