PARP4 and neuroblastoma: Next, we examined the mRNA and protein levels of BIRC5, CSF2RB, NFKBIA, FOS, PARP4 and TNFSF10 following stable transfection with RUNX1, sh-RUNX1#1 or sh-RUNX1#2 in NB cells (Fig. 4 c and d).