Abstract
Background: Numerous problems are associated with biochemical androgen receptor (AR) assay performance and interpretation in prostatic cancer. The purpose of this study was to determine if a novel immunocytochemical AR assay performed on intact tissue sections would prove useful in prognosticating endocrine response and survival.
Methods: A prospective study was done on 63 prostatic carcinomas maintained in liquid nitrogen for over a decade. The study used the peroxidaseantiperoxidase system and a polyclonal anti-AR antibody.
Results: Marked tissue and cellular heterogeneity of nuclear AR was apparent. A cut-off of 10% AR-positive cells maximized assay prognostic efficiency. Frequency of positivity was 48% and correlated significantly with endocrine response (p=0.03), time to progression (p=0.0016), and survival (p=0.02), but not with grade, stage, or ethnicity.
Conclusions: This AR assay could be prognostically useful in the clinical management of prostate cancer and is suitable for use in the community hospital laboratory.
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Pertschuk, L.P., Macchia, R.J., Feldman, J.G. et al. Immunocytochemical assay for androgen receptors in prostate cancer: A prospective study of 63 cases with long-term follow-up. Annals of Surgical Oncology 1, 495–503 (1994). https://doi.org/10.1007/BF02303615
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DOI: https://doi.org/10.1007/BF02303615