RecruitingPhase 1Biological interventionStudy of JANX014 in Subjects With Metastatic Castration-Resistant Prostate CancerThis study is a first-in-human, Phase 1, open-label, multicenter study to assess the safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD), and the preliminary efficacy of JANX014 in adults with metastatic castration-resistant prostate cancer (mCRPC).