A Phase 1/2 First-Time-in-Human, Open-label, Multicenter, Dose Escalation and Expansion Study of GSK5458514 PSMA Targeting T Cell Engager Alone or in Combination With Other Anti-cancer Agents in Adult Participants With Metastatic Castration-resistant Prostate Cancer (mCRPC)

Inclusion Criteria: * Provide signed informed consent. Participants must be capable of providing informed consent, which includes compliance with the requirements and restrictions listed in the Informed consent form (ICF) and in this protocol. * Male participants greater than equal to (\>=)18 years of age (or the legal age of consent in the jurisdiction in which the study is taking place) at the time of signing the ICF. Male participants are eligible to participate if they agree to the following during the study intervention period and for at least 195 days, after the last dose of study inte…