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Pharmacokinetics in Patients With Newly Diagnosed High-Grade Glioma Receiving Temozolomide and Radiation Therapy

Brain and Central Nervous System Tumors Clinical Trial

Official title:
A Pharmacokinetic and Pharmacogenomic Study of Patients With High-Grade Gliomas Receiving Daily Radiation Therapy and Temozolomide

Clinical Trial Summary

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.

Clinical Trial 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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00471653
Study type Observational
Source Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Contact
Status Terminated
Phase
Start date November 11, 2006
Completion date August 18, 2009
View Details
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