O(6)-Benzylguanine and Temozolomide in Treating Patients With Glioblastoma Multiforme That Did Not Respond to Previous Temozolomide and Radiation Therapy
RATIONALE: Drugs used in chemotherapy, such as O(6)-benzylguanine and temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells.
PURPOSE: This phase II trial is studying the side effects and how well giving O(6)-benzylguanine together with temozolomide works in treating patients with glioblastoma multiforme that did not respond to previous temozolomide and radiation therapy.
Brain and Central Nervous System Tumors
|Study Design:||Masking: Open Label
Primary Purpose: Treatment
|Official Title:||A Phase 2 Study of O-Benzylguanine (O-BG) and Temozolomide in Patients With Glioblastoma Progressing at Least 3 Months After Completion of Primary Treatment With Radiation Therapy and Temozolomide|
- Confirmed best objective tumor response rate (complete or partial response) in patients with methylguanine methyltransferase (MGMT)-positive tumors as assessed by immunohistochemistry (IHC) [ Designated as safety issue: No ]
- Objective tumor response rate in patients with MGMT-negative tumors as assessed by IHC [ Designated as safety issue: No ]
- Toxicity as assessed by CTCAE v 3 [ Designated as safety issue: Yes ]
- Best overall response [ Designated as safety issue: No ]
- Progression-free survival [ Designated as safety issue: No ]
- Overall survival [ Designated as safety issue: No ]
|Study Start Date:||December 2006|
|Study Completion Date:||May 2010|
|Primary Completion Date:||July 2009 (Final data collection date for primary outcome measure)|
- Determine the antitumor activity of O6-benzylguanine and temozolomide in patients with temozolomide-resistant methylguanine methyltransferase-positive or -negative glioblastoma multiforme previously treated with radiotherapy.
- Determine, preliminarily, the toxicity of this regimen in these patients.
OUTLINE: Patients receive O6-benzylguanine IV over 1 hour and oral temozolomide once daily on days 1-5. Treatment repeats every 28 days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed periodically for at least 6 months.
PROJECTED ACCRUAL: A total of 100 patients will be accrued for this study.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00436436
|United States, Maryland|
|Warren Grant Magnuson Clinical Center - NCI Clinical Trials Referral Office|
|Bethesda, Maryland, United States, 20892-1182|
|NCI - Neuro-Oncology Branch|
|Bethesda, Maryland, United States, 20892-8200|
|Principal Investigator:||Howard A. Fine, MD||NCI - Neuro-Oncology Branch|