FAP and neoplasm: In vivo, [177Lu]Lu-CHX-A”-DTPA-ESC11 achieved elevated accumulation in FAP+ tumors but not in tissues with basal FAP expression at 72 h p.i. It also outperformed [177Lu]Lu-CHX-A”-DTPA-ESC14 and [177Lu]Lu-CHX-A”-DTPA-F19, which both exhibited lower tumor and higher spleen accumulations.