The amplified genomic region containing MYCN is usually on the order of 500 to 1000 kb, and additional genes located on 2p24.3 are frequently coamplified, such as DDX1 in approximately 40–50% of NB and NAG [25,26,27] and ALK genes in about 10% of NBs. The gene discussed is ALK; the disease is neuroblastoma.