This phase II study of the anti-GD2 murine IgG3 monoclonal antibody 3F8 combined with granulocyte-macrophage colony stimulating factor (GM-CSF) will assess response in of primary refractory neuroblastoma in bone marrow (i.e., incomplete response to standard treatment).

This phase II, open-label, single arm trial assesses the anti-NB activity of high-dose 3F8 (80 mg/m2/day), which is used in cycles 1-2, with return to standard 3F8 dosage (20 mg/m2/day) in subsequent cycles.Clinical results will be compared to those in the predecessor trials which used only the standard 3F8 dosage. Starting with A(6), patients no longer receive high-dose 3F8 but receive only standard dose 3F8 (20mg/m2/day) for all cycles The patients have primary refractory BM disease. Protocol treatment is through 24 months.

Real-time quantitative RT-PCR63-65 will be used to assess MRD in BM. 13-cis-retinoic acid is started no later than after cycle 4 (i.e., after response is scored), but sooner if CR is achieved after cycles 1, 2, or 3, or if early HAMA develops.

against persistent neuroblastoma in bone marrow of patients who have no other evidence of disease by standard studies.

to test the hypothesis that the minimal residual disease content of bone marrow after the first treatments with 3F8/GMCSF has significant prognostic impact on progression-free survival.

This phase II study of the anti-GD2 murine IgG3 monoclonal antibody 3F8 combined with granulocyte-macrophage colony stimulating factor (GM-CSF) will assess response in of primary refractory neuroblastoma in bone marrow (i.e., incomplete response to standard treatment).

against persistent neuroblastoma in bone marrow of patients who have no other evidence of disease by standard studies.

Data were not collected

This phase II study of the anti-GD2 murine IgG3 monoclonal antibody 3F8 combined with granulocyte-macrophage colony stimulating factor (GM-CSF) will assess response in of primary refractory neuroblastoma in bone marrow (i.e., incomplete response to standard treatment).