Clinically relevant CYP2B6 [g.18053A>G (rs2279343), g.15631G>T (rs3745274), g.25505C>T (rs3211371) and g.-82T>C (rs34223104)] and CYP2C19 SNVs [g.19154G>A (rs4244285), g.17948G>A (rs4986893), g.1A>G (rs28399504), g.-806C>T (rs12248560)] most frequent in Caucasian populations were identified in pediatric patients with neuroblastoma (N = 50) (Table 2). The gene discussed is CYP2B6; the disease is neuroblastoma.