AlphaBet: This phase I/II study is seeking to determine the appropriate dose level of Radium-223 when given in addition to combination therapy (177Lu-PSMA-I&T) in people with metastatic, castration-resistant prostate cancerCombination of Radium-223 and Lutetium-177 PSMA-I&T in Men With Metastatic Castration-Resistant Prostate Cancer

Summary

This study has two stages: dose escalation and dose expansion. In the dose escalation stage, eligible participants will receive 7.4 GBq of 177Lu-PSMA-I&T on Day 1 of every 6 week Cycle. Radium-223 will be administered concurrently every 6 weeks. The dose of Radium-223 will vary in dose-escalation, between 27.5 kBq/kg and 55 kBq/kg. Up to 6 Cycles will be given. The maximum tolerated dose of Radium-223 will be used during the second stage, dose expansion.