The binding affinities of Ga-AV01084, Ga-AV01088, and Ga-AV02070 to PSMA were measured by a cell-based competition binding assay using PSMA-expressing LNCaP prostate cancer cells and were compared to that of the previously published Ga-PSMA-617 (Ki = 1.23 ± 0.08 nM) [33]. The gene discussed is FOLH1; the disease is prostate cancer.