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J. Steroid Biochem. Mol. Biol. · Sep 2015
ReviewMechanisms of drug resistance that target the androgen axis in castration resistant prostate cancer (CRPC).
- Trevor M Penning.
- Center of Excellence in Environmental Toxicology, Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA. Electronic address: penning@upenn.edu.
- J. Steroid Biochem. Mol. Biol. 2015 Sep 1; 153: 105-13.
AbstractCastrate resistant prostate cancer (CRPC) is the fatal-form of prostate cancer and remains androgen dependent. The reactivation of the androgen axis occurs due to adaptive intratumoral androgen biosynthesis which can be driven by adrenal androgens and/or by changes in the androgen receptor (AR) including AR gene amplification. These mechanisms are targeted with P450c17 inhibitors e.g., abiraterone acetate and AR super-antagonists e.g., enzalutamide, respectively. Clinical experience indicates that with either agent an initial response is followed by drug resistance and the patient clinically progresses on these agents. This article reviews the mechanisms of intrinsic and acquired drug resistance that target the androgen axis and how this might be surmounted. Copyright © 2015 Elsevier Ltd. All rights reserved.
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