Phase 1/2 Clinical Study of Lutetium Lu 177 JH020002 Injection in Patients With Advanced Prostate Cancer

Inclusion Criteria: * Subjects are required to get informed consent prior to the trial and sign a written informed consent form voluntarily. * Male, age ≥18 years. * ECOG score 0 - 2. * Must have a life expectancy \>6 months. * Histologically and/or cytologically confirmed adenocarcinoma of the prostate (except for those with neuroendocrine or small cell prostate cancer clinical features). * Participants must have a castrate level of serum/plasma testosterone (\< 50 ng/dl, or \< 1.7nmol/L). Exclusion Criteria: * Diagnosed with other malignancies, apart from: adequately treated skin basal cell carcinoma or superficial bladder cancers from which the patient has been disease-free for more than 3 years as confirmed by a physician. * Participants with a history of central nervous system (CNS) metastases who are neurologically unstable, symptomatic, or receiving corticosteroids for the purpose of maintaining neurologic integrity. * Previous treatment with Strontium-89, Samarium-153, Rhenium-186, Rhenium-188, Radium-223 or hemi-body irradiation \<6 months prior to date of first administration of investigational drug. * Previous PSMA-targeted radioligand therapy. * Previous radiotherapy for prostate cancer within 4 weeks prior to date of first administration of investigational drug. * Any systemic anti-cancer therapy (e.g. chemotherapy, immunotherapy, poly adenosine diphosphate-ribosyl polymerase inhibitors (PARPi) or biological therapy within 4 weeks prior to date of first administration of investigational drug. * Must not take part in other investigational therapies within 4 weeks prior to date of first administration of investigational drug. * History of hypersensitivity to any of the study drugs or its excipients or to drugs of similar chemical classes.