Study of Busulfan for Refractory Central Nervous System (CNS) Tumors

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00836628
Recruitment Status : Withdrawn (slow accrual)
First Posted : February 4, 2009
Last Update Posted : February 8, 2016
Information provided by (Responsible Party):
Stewart Goldman, Ann & Robert H Lurie Children's Hospital of Chicago

February 3, 2009
February 4, 2009
February 8, 2016
July 2008
October 2010   (Final data collection date for primary outcome measure)
Not Provided
maximum tolerated dose (MTD) [ Time Frame: 2 years ]
Complete list of historical versions of study NCT00836628 on Archive Site
Not Provided
  • To describe the plasma pharmacokinetics in children with refractory barin tumors [ Time Frame: 2 years ]
  • Event Free Survival [ Time Frame: 2 years ]
  • Progression Free Survival [ Time Frame: 2 years ]
Not Provided
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Study of Busulfan for Refractory Central Nervous System (CNS) Tumors
A Phase I Study Using Submyeloablative DOsing of Intravenous Busulfan (Busulfex) for Refractory Brain Tumors
This protocol is aimed at establishing a maximum tolerated dose (MTD) for submyeloablative doses of Busulfex ® with the hope that a tolerable, submyeloablative dose can be established to test efficacy as alternative therapy for refractory pediatric brain tumors.

Pediatric brain tumors remain among the most common malignancies in childhood, second only to leukemia, representing 20% of all childhood cancers in the United States (1). Although significant strides have been made in therapies for other pediatric malignancies, mortality for patients with brain tumors remains high. The mainstay of therapy for CNS tumors has been a combination of surgery, chemotherapy, and radiation. High dose chemotherapy with stem cell transplant has been proposed as an alternative to radiation, in very young children and for relapsed patients. Stem cell transplantation however is not without significant side effects as well as transplant related mortality.

Busulfan is an alkylating agent and is able to exert its cytotoxic effects through hydrolysis and subsequent production of carbonium ions, directly alkylating DNA, interfering with its replication, and ultimately leading to cell death (2). Busulfan readily crosses the blood barrier, allowing for CNS levels nearly equal to those of plasma levels (5,6).

Primary Objectives:

To determine the maximum tolerated dose (MTD) of Busulfex ® in children with recurrent, progressive, or refractory primary brain tumors.

Secondary Objectives:

To obtain preliminary data regarding progression free survival (PFS) and event free survival (EFS) when Busulfex ® is used at submyeloablative doses in children with recurrent, progressive, or refractory primary brain tumors.

To describe the plasma pharmacokinetics of Busulfex ® in children with recurrent, progressive, or refractory primary brain tumors, using a continuous infusion.

Phase 1
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Refractory Brain Tumors
Drug: Busulfan
Experimental: experimental
Intervention: Drug: Busulfan
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
October 2010
October 2010   (Final data collection date for primary outcome measure)

Inclusion Criteria:

Age: Age >2 year and ≤ 21 years Histologic Diagnosis Any histological proven (confirmed by institutional pathology report; pathology slides from outside referring outside institutions are not required.) recurrent or progressive CNS tumor. (optic pathway and brainstem gliomas allowed without histologic verification, but must have diagnostic imaging).

Life Expectancy Patients must have a life expectancy of ≥ 2 months. Prior Therapy There is no limit to the number of prior therapies a patient has received

  • Must be ≥ 3 weeks from myelosuppressive chemotherapy (6 weeks from nitrosoureas) and have demonstrated recovery (ANC ≥ 1000/uL) from their last course of chemotherapy
  • ≥ 6 months following allogeneic stem cell transplantation
  • ≥ 3 months following autologous stem cell transplantation
  • ≥ 3 months from craniospinal radiation
  • ≥ 4 weeks from focal radiation
  • ≥ 7 days from any past biologic/immunotherapy
  • ≥ 1 week from any hematopoietic growth factors Concomitant Medication
  • Patients taking Itraconazole or Phenytoin will be excluded. Patients must be off of these medications for at least 3 days prior to entering this trial. If the patient is taking phenytoin for seizures at the time of study enrollment, it must be stopped at least 3 days prior to starting therapy and Clonazepam will be substituted during the Busulfex ® infusions and for 24 hours following the infusion.
  • Patients on growth stimulating factors, such as GCSF, will be allowed to continue these medications only as indicated in the study.
  • Patients may be taking steroids while participating in this trial, but should be on a stable dose for >1 week prior to enrollment.
  • Medications interacting with the CYP3A4 substrate should also be avoided while the patient is on study.
  • Patients should also be on Pneumocystis prophylaxis while participating in this study. Pentamidine will be required, with a recommended dose of 4 mg/kg given intravenously every month. Pentamidine should continue throughout the duration of the trial.

Organ Function Requirements Adequate Bone Marrow Function Defined As

  • Peripheral absolute neutrophil count (ANC) greater than or equal to 1000/ul (off growth factors x 48 hrs)
  • Platelet count greater than or equal to 100,000/uL (transfusion independent)
  • Hemoglobin greater than or equal to 8.0 gm/dL (may receive RBC transfusions) Adequate Renal Function Defined As
  • Serum creatinine less than or equal to 1.5 x upper limit of normal, or
  • Estimated creatinine clearance GFR greater than or equal to 70 ml/min/1.73 m² by the Schwartz formula Adequate Liver Function Defined As
  • Total bilirubin within normal range
  • SGPT (ALT) within normal range Adequate Pulmonary Function Defined As
  • Oxygen saturation >92% on room air Central Nervous System Function Defined As
  • Patients with seizure disorder may be enrolled; Patients MUST be on an anti-seizure medication upon enrollment, but this medication CANNOT be phenytoin or carbamezepine.
  • Patients must not be in status, coma or assisted ventilation prior to study enrollment.
  • Stable neurologic exam of at least 1 week duration Performance Level Karnofsky/ Lansky 50 or greater

Exclusion Criteria:

  • Pregnancy/Contraception: patients who are pregnant or breast-feeding will not be eligible.
  • Patients of childbearing potential must practice an effective method of birth control while participating on the study.
  • Females > 13 years of age or those who have achieved menarche must have a negative pregnancy test prior to study entry.
Sexes Eligible for Study: All
3 Years to 21 Years   (Child, Adult)
Contact information is only displayed when the study is recruiting subjects
Not Provided
United States
CNS 1100
Not Provided
Plan to Share IPD: Undecided
Stewart Goldman, Ann & Robert H Lurie Children's Hospital of Chicago
Ann & Robert H Lurie Children's Hospital of Chicago
Not Provided
Principal Investigator: Stewart Goldman, MD Ann & Robert H Lurie Children's Hospital of Chicago
Ann & Robert H Lurie Children's Hospital of Chicago
February 2016

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP