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PFS and OS in patients with castration-resistant prostate cancer treated with first- or second-line AA. (A) PFS in patients treated with first-line AA or second-line AA after flutamide. (B) OS in patients treated with first-line AA or second-line AA after flutamide. AA, abiraterone acetate; n.s., not significant; OS, overall survival; PFS, progression-free survival.
