MYCN and neuroblastoma: According to the 3-year OS nomogram of high-risk NB constructed by Moreno L et al. [3], using indicators of MYCN status, serum LDH and presence of bone marrow metastases, the AUC value of their validation cohort from SIOPEN HR-NBL1 trails was reported to be 0.629, while the AUC of our 3-year OS nomogram in current training and validation sets was 0.758 and 0.825, respectively.