DDX1 and neuroblastoma: Only the neuroblastoma-amplified gene (NAG), DEAD (Asp-Glu-Ala-Asp) box polypeptide 1 (DDX1), MYCN and hypothetical protein LOC81553 (FAM49A) are present in this region between 15.5 × 106 bp and 17.5 × 106 bp from 2pter [22].