RecruitingDrug trialLead-212 PSV359 Therapy for Patients With Solid TumorsPhase I/IIa image-guided, alpha-particle therapy study of \[203Pb\]Pb-PSV359 and \[212Pb\]Pb-PSV359 in patients with solid tumors that are known to be Fibroblast Activation Protein (FAP)-positive.