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- W2154368013 abstract "Abstract Background There is an urgent need for qualified predictive biomarkers of sensitivity for the treatments used in patients with castration-resistant prostate cancer (CRPC). We attempted to identify ready-to-use clinical predictors of improved outcome in metastatic CRPC (mCRPC) patients treated with next generation androgen receptor (AR) axis targeted drugs. Patients and methods We reviewed a cohort of patients who received AR axis targeted drugs for CRPC at two major French cancer centres. The predictive role of several clinical, biological and radiological parameters on progression-free survival (PFS) was studied. Results The study cohort consisted of 173 patients. Median duration of response to initial androgen deprivation therapy (ADT) (time to castration resistance, TTCRPC) was 17.8 months. The 50% prostate-specific antigen (PSA) response rate to AR axis targeted drugs was 16% (95% confidence interval (CI): 6–27) and 41% (95% CI: 30–47) in patients with TTCRPC of under and over 12 months respectively (p = 0.005). Median PFS was 2.8 months (95% CI: 2.1–3.9) and 5.8 (95% CI: 4.6–7.8; HR: 0.58, p = 0.002). In patients treated with post-docetaxel enzalutamide (n = 57), median PFS was 2.8 months and 8.6 months, (Hazard ratio (HR) = 3.1; 95% CI: 1.6–5.8, p = 0.0016) according to TTCRPC, whereas no difference was observed in placebo-treated patients (n = 27). The 50% PSA response rate to enzalutamide was 8% (95% CI: 0–38) and 58% (95% CI: 42–73) in patients with a TTCRPC of under and over 12 months respectively (p Conclusion The previous duration of response to ADT is a predictor of sensitivity to next generation AR axis targeted drugs in patients with mCRPC." @default.
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- W2154368013 date "2015-09-01" @default.
- W2154368013 modified "2023-10-14" @default.
- W2154368013 title "Prior long response to androgen deprivation predicts response to next-generation androgen receptor axis targeted drugs in castration resistant prostate cancer" @default.
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- W2154368013 doi "https://doi.org/10.1016/j.ejca.2015.06.128" @default.
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