To further investigate the role of Rbm38 in the developmental regulation of APA, we examined iCLIP‐seq data for Rbm38 from the mouse neuroblastoma N2A cell line.[49] Among the 1711 genes exhibiting a PPAU‐decreased pattern in mouse fetal brain development, 41% (703) contained significant Rbm38 iCLIP‐seq peaks in their aUTRs (Figure 4E, left panel), with these peaks showing significantly higher iCLIP‐seq signals compared to other peaks (Figure 4E, right panel; Wilcoxon rank‐sum test p‐value = 7.94 × 10−71). This evidence concerns the gene RBM38 and neuroblastoma.