At this early time point, tumor accumulation of [177Lu]Lu-3 was already only about half of the uptake obtained for [177Lu]Lu-1 (5.31 ± 0.94% ID/g for [177Lu]Lu-3 vs. 12.2 ± 1.8% ID/g for [177Lu]Lu-1). This evidence concerns the gene PDZD4 and neoplasm.