Abiraterone acetate for metastatic castration-resistant prostate cancer post-docetaxel
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چکیده
Abiraterone acetate (AA) 1000-mg daily, a selective irreversible androgen biosynthesis inhibitor of cytochrome P450 c17 (CYP17) enzyme, is used in combination with prednisone 10-mg daily to treat docetaxel-treated patients with metastatic castration-resistant prostate cancer (mCRPC). Several studies have demonstrated the safety and efficacy of this compound in men with mCRPC. Interim results from a randomized Phase III study in CRPC patients previously treated with docetaxel demonstrated an improvement in overall survival (OS) for the AA–prednisone group versus the placebo–prednisone group (14.8 vs 10.9 months; hazard ratio [HR] = 0.646, p < 0.001). An updated survival ana lysis showed an improvement in median OS in the treatment group (15.8 vs 11.2 months, HR = 0.740, p < 0.0001). The objective is to critically analyse the emerging role of AA as novel, orally administered androgen synthesis inhibitor and its place for treatment of mCRPC patients following failure of docetaxel chemotherapy. This manuscript reviews the pharmacology, clinical evidence data and use of AA in post-docetaxel patients with mCRPC.
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Metastatic castration-resistant prostate cancer (mCRPC) with visceral involvement requires new, effective and safe treatments after chemotherapy failure. The CYP17A1 inhibitor abiraterone acetate has been approved as a treatment for mCRPC, both after docetaxel chemotherapy and more recently for patients who are not responding to chemotherapy. In published studies, most patients previously treat...
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تاریخ انتشار 2016