AB144. Study on the relationship between MYCN status and other prognostic factors in 41 patients with neuroblastoma

Background and objective Neuroblastoma (NBL) is the most common extracranial solid cancer of childhood and is characterized by a remarkable biological heterogeneity, resulting in favorable or unfavorable outcomes. There are many prognostic factors like age, stage, histopathology, plasma and urinary markers and the molecular characteristics of tumor cells. Amplification of the MYCN gene, observed in 20-25% of NBL, is established as the most powerful prognostic factor, and so as the first tumor genetic marker which has been used for risk stratification in all neuroblastoma clinical trials. This article aims to investigate, in a series of 41 NBL patients ascertained in 2014, the relationship between amplification of MYCN and some other prognostic factors: patient’s age, histopathology, VMA/HVA ratio and LDH level.