MYCN and neuroblastoma: Univariate analysis indicated that sex (p > 0.05 in all NB cohorts), age (p > 0.05 in the EGAS cohort) and ALK status (p > 0.05 in the EGAS) were not risk factors, unlike INSS stages, MYCN and TERT levels and the risk score of the 10-gene model (HR > 1, p < 0.05 in all NB cohorts; Figure 8C).