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Clinical Trial Summary

RATIONALE: Radioactive drugs, such as iodine I 131 metaiodobenzylguanidine (MIBG), may carry radiation directly to tumor cells and not harm normal cells. A bone marrow or peripheral stem cell transplant using stem cells from the patient may be able to replace blood-forming cells that were destroyed by I 131 MIBG.

PURPOSE: This phase II trial is studying the side effects and best dose of iodine I 131 MIBG followed by a stem cell transplant in treating young patients with relapsed or refractory high-risk neuroblastoma.


Clinical Trial Description

OBJECTIVES:

Primary

- To establish the maximum tolerated dose of iodine I 131 metaiodobenzylguanidine (^131I-MIBG) in patients with relapsed/refractory high-risk neuroblastoma.

Secondary

- To describe toxicity following treatment with ^131I-MIBG in patients with relapsed/refractory high-risk neuroblastoma.

- To estimate radiation absorbed doses to measurable lesions and to a standard set of normal organs following a 0.1 mCi/kg [3.7 MBq/kg] (minimum dose of 1.0 mCi [37 MBq] but not to exceed 5.0 mCi [185 MBq]) intravenous administration of ^131I-MIBG in patients with relapsed/refractory high-risk neuroblastoma.

- To describe, within the confines of a phase IIa trial, objective tumor response following treatment with ^131I-MIBG in patients with relapsed/refractory high-risk neuroblastoma.

- To explore dose-response following treatment with ^131I-MIBG in patients with relapsed/refractory high-risk neuroblastoma.

- To explore quality of life assessment following treatment with ^131I-MIBG in patients with relapsed/refractory high-risk neuroblastoma.

OUTLINE:

- Dosimetry: Patients receive a dosimetric dose of iodine I 131 metaiodobenzylguanidine (^131I-MIBG) IV over 1-3 minutes. Patients then undergo 2 or 3 MIBG scans within 5 days of the dosimetry dose to assess biodistribution and tumor uptake. Patients with normal tumor uptake and biodistribution proceed to treatment.

- Treatment: Within 1-4 weeks of the dosimetric dose, patients with normal tumor uptake and biodistribution receive a therapeutic dose of ^131I-MIBG IV over 1 hour on day 0 and undergo MIBG scan on day 7. Patients then proceed to autologous stem cell infusion.

- Autologous stem cell infusion: Patients receive an infusion of autologous stem cells from peripheral blood or bone marrow on day 14. Patients with an ANC of < 500/µl at any point after autologous stem cell infusion receive filgrastim (G-CSF) IV or subcutaneously once daily until ANC is > 2,000/µl.

Patients complete a quality of life questionnaire at baseline and then at day 60.

After completion of study treatment, patients are followed at day 60 and periodically thereafter. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00659984
Study type Interventional
Source Molecular Insight Pharmaceuticals, Inc.
Contact
Status Completed
Phase Phase 2
Start date June 2008
Completion date November 2010

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