RecruitingPhase 2Biological interventionHaploidentical Donor Cytokine-Induced Memory-Like Natural Killer Cells (CIML-NK) for Relapsed & Refractory NeuroblastomaThe goal of this study is to demonstrate that cytokine-induced memory-like natural killer cells (CIML-NK cells) can be generated from donor cells and infused safely into patients with relapsed or refractory neuroblastoma during dinutuximab-based therapy.