Safety Study of Dinutuximab Combined With Immunotherapy to Treat Neuroblastoma

"Patients will receive 5 courses of Dinutuximab + GM-CSF + IL2 at intervals of 28 days for all courses. In addition, all patients will receive isotretinoin (13-cis-retinoic acid, or RA) at 160 mg/m2/dose twice a day for 14 days every 28 days, for 6 courses.~Patients come off study if progressive disease develops at any time after cycle 1 or life-threatening grade 4 toxicity occurs clearly attributable to Immunotherapy."