MYCN and neuroblastoma: As shown in Figure S2, the protein expression levels of CCNB1IP1 in NB cell lines were found to be significantly higher in MYCN‐AM cell lines (SK‐N‐BE(2), BE(2)M17 and IMR‐32) compared to NA cell lines (SK‐N‐AS, SH‐SY5Y and SK‐N‐SH).