WDR5 and neuroblastoma: To further determine the region of WDR5 bound with AC142119.1 RNA, the truncated forms of WDR5 (WDR5-D1, WDR5-D3, WDR5-D6 and WDR5-7) were also established and applied to RNA EMSA along with biotin-labeled AC142119.1 probes in NB cells.