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CompletedNCT00083135Updated Apr 14, 2026

N2000-01: Double Infusion of Iodine I 131 Metaiodobenzylguanidine Followed by Autologous Stem Cell Transplantation

A Phase 1 interventional study of filgrastim and autologous bone marrow transplantation in Neuroblastoma, sponsored by New Approaches to Neuroblastoma Therapy Consortium. Completed at 7 sites in United States. Open to participants aged 1 Year to 30 Years. Per ClinicalTrials.gov, last updated 2026-04-14.

Sponsored by New Approaches to Neuroblastoma Therapy Consortium · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
18
Ages
1 Year to 30 Years
Sex
All
01

Study summary

RATIONALE: Giving iodine I 131 metaiodobenzylguanidine (\^131I-MIBG) may kill neuroblastoma cells by delivering radiation directly to the tumor. A stem cell transplant using the patient's stem cells may be able to replace blood-forming cells destroyed by radiation therapy.

PURPOSE: This phase I trial is studying the side effects and best dose of a double infusion of \^131I-MIBG followed by autologous stem cell transplantation in treating patients with refractory neuroblastoma.

Read the detailed description

OBJECTIVES:

Primary

  • Determine the maximum tolerated red marrow radiation dose delivered and associated toxic effects of escalating activity of iodine I 131 metaiodobenzylguanidine (\^131I-MIBG) followed by autologous hematopoietic stem cell transplantation in patients with refractory neuroblastoma.
  • Determine the number of days after stem cell transplantation to achieve absolute neutrophil count ≥ 500/mm\^3 for 3 days and platelet count ≥ 20,000/mm\^3 for 3 days (without transfusions) in patients treated with this regimen.

Secondary

  • Determine the response rate in patients treated with this regimen, based on lesions measurable by CT or MRI at study entry, patients with \^131I-MIBG scan-positive lesions only, and patients with minimal residual tumor in bone marrow who have complete response by immunocytology and morphology.
  • Determine the tumor absorbed radiation dose in patients with measurable soft tissue lesions treated with this regimen.
  • Correlate, if possible, TP53 mutations with response in patients with accessible bone marrow tumor treated with \^131I-MIBG.

OUTLINE: This is a dose-escalation, multicenter study.

  • Iodine I 131 metaiodobenzylguanidine (131I-MIBG) therapy: Patients receive\^131I-MIBG IV over 2 hours on days 0 and 14.

Cohorts of 3-6 patients receive escalating doses of \^131I-MIBG until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity.

  • Stem cell transplantation therapy: Patients undergo autologous peripheral blood stem cell transplantation on day 28. Patients receive filgrastim (G-CSF) IV over 1 hour OR subcutaneously daily beginning on day 28 and continuing until blood counts recover.

Patients are followed every 3 months for 1 year and then annually thereafter.

PROJECTED ACCRUAL: A total of 9-18 patients will be accrued for this study within 2 years.

02

Conditions studied

  • Neuroblastoma

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Keywords

  • recurrent neuroblastoma
03

In context

Neuroblastoma

625 studies on the registry are indexed under Neuroblastoma; 123 are open to participants now.

This study's planned enrollment of 18 is below the median of 32 across 475 interventional studies indexed under Neuroblastoma.

Browse Neuroblastoma studies →

Lead sponsor

New Approaches to Neuroblastoma Therapy Consortium is the lead sponsor of 23 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year to 30 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

DISEASE CHARACTERISTICS:

  • Diagnosis of neuroblastoma

    • Confirmed by at least 1 of the following methods:

      • Histology
      • Clumps of tumor cells in bone marrow with elevated urinary catecholamine metabolites
    • High-risk disease

      • Poor response to induction therapy OR relapse defined by any of the following:

        • No response, stable disease, or mixed response after a minimum of 3 prior courses of chemotherapy
        • More than 100 tumor cells per 10\^5 nucleated cells on bone marrow immunocytology after at least 3 prior courses of chemotherapy
        • Progressive disease at any time during or after therapy
        • Patients with massive bone marrow invasion (more than 50% replacement of bone marrow by tumor cells) are allowed
  • Must have positive iodine I 131 metaiodobenzylguanidine (\^131I-MIBG) within the past 6 weeks or subsequent to any other prior antitumor therapy delivered within the past 6 weeks
  • Must meet the following criteria for minimum number of autologous stem cells:

    • Unpurged peripheral blood stem cells (PBSC)

      • Minimum of 1,500,000/mm\^3 CD34-positive cells/kg
      • Collected products must have \< 1 tumor cell/100,000 normal cells by immunocytology
    • PBSC purged with immunomagnetic beads

      • Minimum of 1,000,000/mm\^3 viable CD34-positive cells/kg
      • Collected products must have \< 1 tumor cell/100,000 normal cells by immunocytology
    • CD34-positive selected PBSC products are not allowed
    • Patients who had PBSC collected previously with no immunocytological testing available may use those products provided bone marrow is tumor free by bilateral bone marrow aspirate AND biopsy for morphology is performed within 4 weeks before PBSC collection
    • Patients with no tumor involvement in bone marrow at diagnosis and PBSC collection before any disease progression do not require documentation of negative bone marrow morphology

PATIENT CHARACTERISTICS:

Age

  • 1 to 30

Performance status

  • ECOG 0-2

Life expectancy

  • Less than 1 year

Hematopoietic

  • Absolute neutrophil count ≥ 500/mm\^3
  • Platelet count ≥ 50,000/mm\^3 (without transfusion)
  • Hemoglobin ≥ 8 g/dL (transfusion allowed)

Hepatic

  • AST and ALT ≤ 5 times normal
  • Bilirubin \< 2 times normal

Renal

  • Creatinine ≤ 1.5 mg/dL
  • Glomerular filtration rate OR 12-hour creatinine clearance ≥ 60 mL/min/1.73m\^2

Cardiovascular

  • Ejection fraction ≥ 55% by echocardiogram or MUGA OR
  • Fractional shortening ≥ 30% OR above lower limit of normal by echocardiogram

Pulmonary

  • Normal lung function
  • No dyspnea at rest
  • No exercise intolerance
  • No oxygen requirement

Other

  • Not pregnant or nursing
  • Negative pregnancy test
  • Fertile patients must use effective contraception
  • Able to cooperate physically and psychologically with radiation isolation
  • No disease of any major organ system that would preclude study participation
  • No active infection requiring antivirals, antibiotics, or antifungals
  • No weight that would require exceeding a maximum total allowable dose of \^131I-MIBG

PRIOR CONCURRENT THERAPY:

Biologic therapy

  • At least 2 weeks since prior biologic or other non-myelosuppressive therapy

Chemotherapy

  • See Disease Characteristics
  • At least 2 weeks since prior chemotherapy
  • More than 3 months since prior myeloablative therapy

Endocrine therapy

  • Not specified

Radiotherapy

  • See Disease Characteristics
  • At least 6 months since prior craniospinal, total abdominal, or whole lung radiotherapy
  • At least 2 weeks since prior radiotherapy to any site
  • No prior total body irradiation
  • No prior radiotherapy to > 25% of bone marrow
  • No prior \^131I-MIBG

Surgery

  • Not specified

Other

  • Recovered from all prior therapy
  • Concurrent antifungal therapy allowed provided culture and biopsy are negative in suspected radiographic lesions
  • Prior re-induction therapy for recurrent tumor allowed
  • No concurrent antiretroviral therapy for HIV-positive patients
  • No concurrent hemodialysis
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Enrollment
18 participants (estimated)

Interventions

  • Biologicalfilgrastim
  • Procedureautologous bone marrow transplantation
  • Procedureperipheral blood stem cell transplantation
  • Radiationiobenguane I 131
06

Study locations

7 sites
  • Children's Hospital Los Angeles
    Los Angeles, California 90027-0700, United States
  • UCSF Comprehensive Cancer Center
    San Francisco, California 94143, United States
  • Indiana University Cancer Center
    Indianapolis, Indiana 46202-5289, United States
  • Children's Hospital Boston
    Boston, Massachusetts 02115, United States
  • Cincinnati Children's Hospital Medical Center
    Cincinnati, Ohio 45229-3039, United States
  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania 19104, United States
  • University of Wisconsin Comprehensive Cancer Center
    Madison, Wisconsin 53792-6164, United States
07

References and documents

Publications

  • Matthay KK, Quach A, Huberty J, Franc BL, Hawkins RA, Jackson H, Groshen S, Shusterman S, Yanik G, Veatch J, Brophy P, Villablanca JG, Maris JM. Iodine-131--metaiodobenzylguanidine double infusion with autologous stem-cell rescue for neuroblastoma: a new approaches to neuroblastoma therapy phase I study. J Clin Oncol. 2009 Mar 1;27(7):1020-5. doi: 10.1200/JCO.2007.15.7628. Epub 2009 Jan 26. PubMed 19171714 ↗
  • Taggart DR, Han MM, Quach A, Groshen S, Ye W, Villablanca JG, Jackson HA, Mari Aparici C, Carlson D, Maris J, Hawkins R, Matthay KK. Comparison of iodine-123 metaiodobenzylguanidine (MIBG) scan and [18F]fluorodeoxyglucose positron emission tomography to evaluate response after iodine-131 MIBG therapy for relapsed neuroblastoma. J Clin Oncol. 2009 Nov 10;27(32):5343-9. doi: 10.1200/JCO.2008.20.5732. Epub 2009 Oct 5. PubMed 19805691 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00083135
Lead sponsor
New Approaches to Neuroblastoma Therapy Consortium
Collaborators
National Cancer Institute (NCI)
Responsible party
Sponsor
First posted
May 17, 2004
Start date
Mar 2004
Primary completion
Feb 2006
Last update
Apr 14, 2026

Study contacts

Katherine K. Matthay, MD
study chair · University of California, San Francisco
Gregory Yanik, MD
principal investigator · University of Michigan Rogel Cancer Center
John M. Maris, MD
principal investigator · Children's Hospital of Philadelphia

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2009. You cannot join it, but the record below documents what was studied.

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