P073: Phase 1b study of ARN-509 with abiraterone acetate and prednisone in patients with metastatic Castration-Resistant Prostate Cancer (mCRPC)Posadas E.1, Chi K.N.2, De Wit R.3, De Jonge M.J.A.3, Attard G.4, Friedlander T.5, Yu M.K.6, Hellemans P.7, Chien C.8, Abrams C.9, Gonzalez M.10, Trudel G.C.6, Chauhan V.11, Jiao J.11, Saad F.12
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