A Phase 3 Randomized, Double-blind, Placebo-controlled Study of Pasritamig (JNJ-78278343), a T Cell Engaging Agent Targeting Human Kallikrein 2, With or Without JNJ-87189401, a PSMA-CD28 Costimulatory Agent, Plus Best Supportive Care Versus Best Supportive Care for Late-line Metastatic Castration-resistant Prostate Cancer

Inclusion Criteria * Histologically confirmed adenocarcinoma of the prostate * Metastatic castration-resistant prostate cancer (mCRPC): Disease that is metastatic either to bone, any lymph node, or both without clear evidence of other metastatic sites at the time of screening by conventional imaging with computed tomography (CT) or magnetic resonance imaging (MRI) (chest, abdomen, and pelvis) and 99m\^Tc bone scan. Visceral disease is not allowed * PSA greater than or equal to (≥) 2 nanogram per milliliter (ng/mL) at screening * In the opinion of the investigator, the next best treatment opti…