To investigate the role of IGF2BP1 on PD-L1 level in vivo, the xenograft mice assay was performed using the mouse derived liver cancer cells (Hepa1-6) of stably transferred with IGF2BP1 shRNA#1 (sh-IGF2BP1) and control vector (sh-NC) (Figure 7A). Here, IGF2BP1 is linked to liver cancer.