Role of rhPSMA-7.3 PET/CT Imaging in Men With High-Risk Prostate Cancer Following Conventional Imaging and Associated Changes in Medical Management

Inclusion Criteria:

1. Patient willing to provide signed informed consent and willing to comply with all required study schedule events, where safe and feasible.
2. Patient is male and aged \>18 years old.
3. Histologically confirmed adenocarcinoma of the prostate.
4. High risk prostate cancer. High-risk patients will be defined as having any of the following criteria: primary Gleason grade 4, or any Gleason grade 5, PSA ≥20, or clinical stage T3a (per NCCN Guidelines Version 2.2019; PROS-2).

Exclusion Criteria:

1. Patients with any medical condition or circumstance (including receiving an IP) that the investigator believes may compromise the data collected or lead to a failure to fulfil the study requirements.
2. Patients who are planned to have an x-ray contrast agent or other PET radiotracer \<24 hours prior to the PET scan.
3. Patients currently receiving, or with a prior history of, androgen deprivation therapy (ADT; defined as surgical orchidectomy; luteinizing hormone-releasing hormone \[LHRH\] agonist alone \[continuous or intermittent\]; LHRH antagonist alone \[continuous or intermittent\]; administration or use of a first generation or second generation anti-androgen alone or in combination with an LHRH agonist/antagonist).
4. Patients participating in an interventional clinical trial within 30 days and having received an IP within five biological half-lives prior to administration of rhPSMA-7.3.