PRMT1 and neuroblastoma: We browsed the Expression Atlas with RNA sequencing data of 675 commonly used cancer cell lines (https://www.ebi.ac.uk/gxa/experiments/E-MTAB-2706/Results)37 and found that MYCN levels vary greatly in seven neuroblastoma cell lines included in the database, whereas PRMT1 was expressed at a similar level (Supplementary Table S1).