Naxitamab for High-Risk Neuroblastoma Patients With Primary Refractory Disease or Incomplete Response to Salvage Treatment in Bone and/or Bone Marrow

Children and adults diagnosed with high-risk neuroblastoma patients with primary refractory disease or incomplete response to salvage treatment in bone and/or bone marrow will be treated for up to 101 weeks with naxitamab and granulocyte-macrophage colony stimulating factor (GM-CSF). Patients will be followed for up to five years after first dose. Naxitamab, also known as hu3F8 is a humanised monoclonal antibody targeting GD2

Inclusion Criteria: * Diagnosis of neuroblastoma as defined per International Neuroblastoma Response Criteria * High-risk neuroblastoma patients with either primary refractory disease or incomplete response to salvage treatment (in both cases including stable disease, minor response and partial response) evaluable in bone and/or bone marrow. * Life expectancy ≥ 6 months Exclusion Criteria: * Any systemic anti-cancer therapy, including chemotherapy or immunotherapy, within 3 weeks before 1st dose of GM-CSF * Evaluable neuroblastoma outside bone and bone marrow * Existing major organ dysfunction \> Grade 2, with the exception of hearing loss, hematological status, kidney and liver function * Active life-threatening infection