RecruitingPhase 1Biological interventionStudy Combining Dinutuximab Beta With Two Chemotherapy Regimens in NeuroblastomaThe goal of this clinical trial is to to assess the dose level of dinutuximab Beta (DB) when combined with 2 different induction chemotherapy regimens (named GPOH or rapid COJEC) in newly diagnosed high-risk neuroblastoma patients. The main question is: • to assess the safety and tolerability and identifying the recommended phase II dose and/or the maximum tolerable dose of dinutiximab Beta when combined with 2 standard induction chemotherapy regimens Participants will receive: * GPOH + dinutuximab beta infusion duration = 10 mg/m2 × 5 days (50 mg/m2/course) in 21-day treatment intervals. * Rapid COJEC + dinutuximab beta infusion duration = 10 mg/m2 × 3 days (30 mg/m2/course) in 10-day treatment intervals.