3F8/GM-CSF Immunotherapy Plus 13-Cis-Retinoic Acid for Consolidation of Second or Greater Remission of High-Risk Neuroblastoma

Inclusion Criteria: * Diagnosis of NB as defined by a) histopathology (confirmed by the MSKCC Department of Pathology), or b) BM metastases or MIBG-avid lesion(s) plus high urine catecholamine levels. * High-risk NB as defined by risk-related treatment guidelines1 and the International NB Staging System,89 i.e., stage 4 with (any age) or without (\> or = to 18 months of age) MYCN amplification, MYCN-amplified stage 2 or stage 3 (any age), or MYCN-amplified stage 4S. * The patients are in \>2nd CR/VGPR, including no measurable MIBG-avid soft tissue tumor assessable for response. * Signed informed consent indicating awareness of the investigational nature of this program. Exclusion Criteria: * Creatinine \> 3.0 mg/dL * ALT, AST and Alkaline Phosphatase \> 5.0 times the upper limit of normal * Bilirubin \> 3.0 mg/dL * Patients with grade 3 or higher toxicities (using the CTCAE v34.0) related to cardiac, neurological, pulmonary or gastrointestinal function as determined by physical exam. Patients must have normal blood pressure for age. * Progressive disease * History of allergy to mouse proteins * Active life-threatening infection. * Human anti-mouse antibody (HAMA) titer \>1000 Elisa units/ml. * Inability to comply with protocol requirements.