Neoadjuvant Interstitial Brachytherapy Using Diffusing Alpha Emitters Radiation Therapy in Men With Prostate Cancer

The study is planned as a prospective, open-label, one arm, single center trial, designed to assess the feasibility and safety of intratumoral DaRT seeds implantation for the treatment of local prostate cancer prior to surgery. This approach combines the advantages of local intratumoral irradiation of the tumor, as used in conventional brachytherapy, with the power of the alpha radiation emitting atoms, that will be introduced in quantities considerably lower than radiation therapy already used in patients. Prostate lesions with histopathological confirmation of adenocarcinoma will be treated using DaRT seeds in a neo-adjuvant setting. Feasibility will be assessed by the successful delivery of DaRT seeds into the intratumoral environment. In addition, objective response rate will be assessed both by imaging and pathology.