BIRC2 and glioblastoma: To examine cIAP1 mRNA levels in response to TRIM56, we performed qRT-PCR on RNA from GBM#P3-, LN229- and U118MG-sh-TRIM56-S1 and -S2 cells and found that cIAP1 mRNA levels remained unaltered with the knockdown of TRIM56 (Figure S7c).