Radiometabolic Therapy With 177Lu PSMA in PSMA PET/CT Positive Advanced/Metastatic Tumours: (LUBASKET)

Inclusion Criteria: Patients must have histologically or cytologically confirmed advanced/metastatic solid tumors; any other tumor types documented as PSMA-positive that may benefit from receptor radionuclide therapy and for which there aren't any other effective treatments. For cerebral PSMA-positive tumors, if biopsy is no feasible for technical reason or risk benefit balance, patients may be enrolled if CT or MRI strongly suggest oncological lesion confirming the Gallium-68 PET-CT PSMA positivity. Patients must have measurable disease; for patients with prostate cancer, also patients with only bone lesions can be enrolled. Relapse or progression of disease on CT scan and / or MRI; For patients with prostate cancer: documented radiological progression (in soft tissue and / or bone) and / or biochemical progression (sequence of Prostate-Specific Antigen (PSA) rising values from a minimal starting value ≥ 1 ng/ml) according to PCWG3. Patients with documented disease will be admitted to therapeutic phase only if the semi quantitative intensity of lesions uptake at the diagnostic PET/CT PSMA is higher than that of salivary glands or SUV has to be 1.5 times higher than the average total body No therapeutic alternatives Male or Female, aged>18 years Life expectancy of greater than 12 weeks Eastern Cooperative Oncology Group (ECOG) performance status <2 Patients must have normal organ and marrow function If female of childbearing potential highly effective birth control methods, according to guideline "Recommendation related to contraception and pregnancy testing in clinical trials" are mandatory. Highly effective birth control methods are required beginning at the screening visit and continuing until 6 months following last treatment with study drug. Negative serum pregnancy test for females of childbearing potential within 72hours of starting treatment. Male patient and his female partner who is of childbearing potential must use 2 acceptable methods of birth control (1 of which must include a condom as a barrier method of contraception) starting at screening and continuing throughout the study period and for 6 months after final study drug administration. Two acceptable methods of birth control thus include Condom (barrier method of contraception) and one of the following is required ( established use of oral, or injected or implanted hormonal method of contraception by the female partner; placement of an intrauterine device (IUD) or intrauterine system (IUS) by the female partner; additional barrier method like occlusive cap with spermicidal foam/gel/film/cream/suppository in the female partner; tubal ligation in the female partner; vasectomy or other procedure resulting in infertility (eg., bilateral orchiectomy), for more than 6 months. Participant is willing and able to give informed consent for participation in the study. Exclusion Criteria: Patients who have completed chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) and hormonotherapy within 2 weeks, prior to treatment start. All acute toxic effects of any prior therapy (including surgery, radiation therapy, chemotherapy) must have resolved to a grade ≤ 1 according to National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (CTCAE). Participation in another clinical trial with any investigational agents within 30 days prior to study treatment start. History of allergic reactions attributed to compounds of similar chemical or biologic composition to 177Lu-PSMAs or other agents used in the study. Medical or psychological conditions that would not allow the participant to understand, or sign the informed consent. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.