A Phase 1b Open-label, Multicenter Study Evaluating the Safety, Tolerability, and Efficacy of Xaluritamig in Combination With Androgen Receptor Pathway Inhibitors in Participants With Metastatic Hormone-sensitive Prostate Cancer

Inclusion Criteria: * Participants must have histological, pathological, and/or cytological confirmation of adenocarcinoma of the prostate. Mixed histologies (eg, adenocarcinoma with neuroendocrine component) are not permitted. * Participants must have at the time of diagnosis: * De novo mHSPC, defined as metastatic disease with no prior diagnosis of localized prostate cancer AND started androgen deprivation therapy (ADT) (luteinising hormone-releasing hormone \[LHRH\] agonist/antagonist or orchiectomy) with or without androgen receptor pathway inhibitor (ARPI) (defined as abiraterone OR d…