PTBP2 and neuroblastoma: However, neither CCL5- nor anti-CCL5-neutralizing antibody affected NB cell migration and clone abilities induced by the PTBP2-altered NB cell–monocyte system (Fig. S5C and D), indicating that the tumor-inhibiting effect of PTBP2-induced monocytes/Mφs was not determined by the CCL5/CCR5 axis.