MYCN and neuroblastoma: In contrast, chromosomal aberrations such as deletions of parts of chromosome arms 1p and 11q, 17q gain, triploidy, as well as MYCN and ALK amplifications, are important for prognosis in NB (Brodeur, 2003; Vandesompele et al, 2005; Michels et al, 2007; Caren et al, 2008, 2010; Janoueix‐Lerosey et al, 2008; De Brouwer et al, 2010).