The biodistribution of the radiolabeled multimodal aPD-L1 site-specific conjugates was assessed in 4T1 tumor-bearing mice 4 h, 24 h and 72 h p.i. for mIgG1-IH18 and 1 h, 4 h and 24 h p.i. for Fab-IH18 and Fab-IH18-PEG (Fig. 4 and Additional file 1: Table S2). This evidence concerns the gene FANCB and neoplasm.