AR and posterior cortical atrophy: For this setting of patients, following docetaxel-based chemotherapy, the FDA recently approved four new agents for the treatment of PCa: cabazitaxel, a taxane chemotherapy agent; abiraterone [4] and enzalutamide [5], which target the androgen receptor (AR) axis [6]; and radium-223, an α-emitting radiopharmaceutical [7].