Human neuroblastoma BE(2)-M17 cell line (ATCC® CRL-2267TM) was cultured and RT-PCR was used to confirm that the ELF2, ATXN2, and ELOV5L genes are constitutively expressed in BE(2)-M17 neuroblastoma cell line (Supplementary Figures S4A,C). Here, ELF2 is linked to neuroblastoma.