A Compassionate Use/Expanded Access Protocol Using 131I-MIBG Therapy for Patients With Refractory Neuroblastoma and Metastatic Pheochromocytoma

Inclusion Criteria

• •Diagnosis: Relapsed/Refractory neuroblastoma, with an original diagnosis made histologically or from elevated urine catecholamines with abnormal tumor cells in bone marrow OR relapsed/refractory pheochromocytoma.
• •Disease status: Progressive disease at any time (defined as any new lesion or an increase in size by \>25% of pre-existing disease), or a failure to respond to standard therapy. Patients must have evidence of MIBG uptake into tumor at ≥ one site within 6 weeks prior to entry on study and subsequent to any intervening therapy
• •Prior therapy: A minimum of two weeks since should have elapsed since any chemotherapy causing myelosuppression. It must be a minimum of three months since receiving radiation to any of the following fields: craniospinal, total abdominal, whole lung, total body irradiation. For any other sites of radiation, at least 2 weeks should have elapsed. For patients who received radiation to the only site of MIBG-avid disease within two months of study entry, biopsy confirmation of residual active disease is required, with positive bone marrow being sufficient. At least 7 days should have elapsed since completion of therapy with a biologic agent and at least 3 half-lives should have elapsed since therapy with a monoclonal antibody. No cytokine therapy may be given within 24 hours of receiving 131I-MIBG. Patients may have received prior MIBG therapy, provided they demonstrated a response or stable disease initially, with progressive disease occurring at least 35 days following treatment.
• •Organ function: ANC \>500/uL, platelets \>20,000/uL with transfusion allowed. Bilirubin ≤2x ULN, AST/ALT ≤10x ULN.Serum Creatinine ≤2x ULN OR 24-hour creatinine clearance OR GFR ≥60ml/min/1.73m2. Normal lung function demonstrated by no dyspnea, exercise intolerance or oxygen requirement. Oxygen saturation ≥94% on room air. No clinically significant cardiac dysfunction and ejection fraction ≥45% on echocardiogram.
• •Stem cells: Patients must have a minimum of 2.0 x106/kg viable CD34+ peripheral blood stem cells for re-infusion following 131I-MIBG. An additional back-up of 2.0x106/kg CD34+ cells is recommended but not required.
• •Life expectancy longer than 8 weeks,Karnofsky or Lansky performance status of ≥ 50%