Overview Study of AMG 509 in Subjects With Metastatic Castration-Resistant Prostate Cancer Status: Recruiting Trial end date: 2026-03-24 Target enrollment: Participant gender: Summary Evaluate the safety and tolerability of AMG 509 in adult subjects and determine the maximum tolerated dose (MTD) or recommended phase 2 dose (RP2D). Phase: Phase 1 Details Lead Sponsor: AmgenTreatments: BB 1101DexamethasoneDexamethasone acetate