A Phase 2/3,PSMA-T4, Prostate Cancer

This is a Phase 2/3, open-label study, with multicohort design that will enroll up to approximately 80 subjects with prostate cancer (60 for cohorts A, B and 20 for cohort C). Cohort A - lymph node assessment in intermediate risk group before the initiation of treatment. The patients will undergo \[99mTc\]Tc-PSMA-T4 multi-SPECT/CT as an additional modality to contrast-enhanced (CE) multiparametric MRI (according to PI-RADS 2.1 protocol), and chest, and abdominal CE computed tomography and technetium-99m-MDP bone scan in unfavorable risk prostate cancer patients. Cohort B - general assessment (bone and lymph nodes) in high and very high-risk group. The patients will undergo \[99mTc\]Tc-PSMA-T4 multi-SPECT/CT as an additional modality to contrast-enhanced (CE) multiparametric MRI (according to PI-RADS 2.1 protocol), and chest, and abdominal CE computed tomography and technetium-99m-MDP bone scan in unfavorable risk prostate cancer patients. Cohort C - recurrent disease after definitive treatment (radiotherapy or surgery) The patients will undergo \[99mTc\]Tc-PSMA-T4 multi-SPECT/CT as an additional modality to the second confirmatory imaging modality or biopsy in the case of evidence on progressive disease (PSA persistence/recurrence or radiographic evidence of metastatic disease or clinical symptoms suggesting metastatic disease).