Pharmacokinetics in Patients With Newly Diagnosed High-Grade Glioma Receiving Temozolomide and Radiation Therapy
This trial is active, not recruiting.
|Conditions||brain and central nervous system tumors, thrombocytopenia|
|Treatments||temozolomide, comparative genomic hybridization, polymorphism analysis, laboratory biomarker analysis, pharmacological study, radiation therapy|
|Sponsor||Sidney Kimmel Comprehensive Cancer Center|
|Collaborator||National Cancer Institute (NCI)|
|Start date||November 2006|
|End date||December 2008|
|Trial size||150 participants|
|Trial identifier||NCT00471653, CDR0000543866, JHOC-J0684, JHOC-NA_00004964|
RATIONALE: Studying samples of blood in the laboratory from patients receiving temozolomide may help doctors learn how temozolomide works in the body. It may also help doctors learn more about how a patient's genes may affect the risk of developing thrombocytopenia.
PURPOSE: This clinical trial is studying the pharmacokinetics in patients with newly diagnosed high-grade glioma receiving temozolomide and radiation therapy.
|United States||No locations recruiting|
|Other countries||No locations recruiting|
Correlation of pharmacokinetics with incidence of dose-limiting toxicities
Maximum concentration of temozolomide
Polymorphisms in the MGMT repair gene
Male or female participants at least 18 years old.
DISEASE CHARACTERISTICS: - Histologically confirmed high-grade glioma (WHO grade III or IV) - Must be scheduled to receive standard first-line therapy (cranial radiotherapy and temozolomide) PATIENT CHARACTERISTICS: - ANC ≥ 1,500/mm³ - Platelet count ≥ 100,000/mm³ - Creatinine ≤ 1.7 mg/dL - Bilirubin ≤ 1.5 mg/dL - Transaminases ≤ 4 times upper limit of normal - Not pregnant or nursing - Negative pregnancy test - Fertile patients must use effective contraception - No other malignancy within the past 5 years except curatively treated carcinoma in situ or basal cell carcinoma of the skin PRIOR CONCURRENT THERAPY: - No prior hormonal therapy for brain tumor - No prior biological agents (including immunotoxins, immunoconjugates, antisense agents, peptide receptor antagonists, interferons, interleukins, tumor-infiltrating lymphocytes, lymphokine-activated killer cells, or gene therapy) - No prior immunotherapy - No prior chemotherapy - No prior radiotherapy, including cranial radiotherapy - Concurrent glucocorticoid therapy allowed - No concurrent carbamazepine - No other concurrent experimental therapy - No other concurrent cytotoxic therapy
|Official title||A Pharmacokinetic and Pharmacogenomic Study of Patients With High-Grade Gliomas Receiving Daily Radiation Therapy and Temozolomide|
|Description||OBJECTIVES: - Compare the pharmacokinetic (PK) profiles of temozolomide (TMZ) in patients who develop severe thrombocytopenia vs PK profiles in patients who do not develop severe thrombocytopenia while receiving standard first-line therapy for management of newly diagnosed high-grade gliomas. - Determine if patients who develop thrombocytopenia have any single nucleotide polymorphisms in the O6-methylguanine-DNA methyltransferase gene. OUTLINE: This is a pilot, prospective, multicenter study. Patients receive oral temozolomide once daily on days 1-42. Patients also undergo cranial radiotherapy 5 days a week for 6 weeks in the absence of disease progression or unacceptable toxicity. Blood samples are collected periodically for pharmacokinetic and pharmacogenomic analysis, genotype analysis, plasma temozolomide levels, and MGMT repair gene polymorphism analysis. After completion of study treatment, patients are followed for 1 month. PROJECTED ACCRUAL: A total of 150 patients will be accrued for this study.|
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