The panel of human neuroblastoma cell lines that were examined included cells without (SH-SY5Y) and with (LAN-1, Kelly, BE(2)C, IMR-32, and NB-1) amplification of the NMYC gene, which is commonly associated with advanced stage tumors and considered a poor prognostic factor in neuroblastoma [1,2]. This evidence concerns the gene MYCN and neuroblastoma.