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Clinical Trial Summary

RATIONALE: ABT-888 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving ABT-888 together with radiation therapy and temozolomide may kill more tumor cells.

PURPOSE: This phase I/II trial is studying the side effects and best dose of ABT-888 when given together with radiation therapy and temozolomide and to see how well it works in treating patients with newly diagnosed glioblastoma multiforme.


Clinical Trial Description

OBJECTIVES:

Primary

- To determine the maximum tolerated dose (MTD) of ABT-888 when administered in combination with radiotherapy and temozolomide in patients with newly diagnosed glioblastoma multiforme. (Phase I)

- To estimate the overall survival of patients treated with ABT-888 when administered at the MTD in combination with radiotherapy and temozolomide. (Phase II)

Secondary

- To assess the toxicity associated with this regimen. (Phase I)

- To assess and describe the pharmacokinetics of ABT-888. (Phase I)

- To estimate the frequency of toxicity associated with this regimen. (Phase II)

OUTLINE: This is a multicenter, phase I dose-escalation study of ABT-888 followed by a phase II study.

- Initiation therapy: Patients receive oral ABT-888 twice daily (once on day 1 only) and oral temozolomide once daily (beginning on day 2) in weeks 1-6. Patients enrolled in the phase I dose-escalation/phase II portion of the study also undergo concurrent radiotherapy once daily 5 days a week (beginning on day 2) in weeks 1-6. Treatment continues in the absence of disease progression or unacceptable toxicity.

- Maintenance therapy: Beginning 4 weeks after completion of initiation therapy, patients receive oral ABT-888 twice daily on days 1-7 and oral temozolomide once daily on days 1-5. Treatment repeats every 28 days for up to 4 courses (6 courses for patients enrolled in the phase I dose-escalation/phase II portion of the study) in the absence of disease progression or unacceptable toxicity.

Blood samples are collected periodically for pharmacokinetic, pharmacogenetic, and pharmacodynamic analysis. Samples are analyzed for concentration of ABT-888 in plasma by reversed-phase isocratic high performance liquid chromatography with electrospray ionization mass spectrometry; identification of novel markers of treatment response by plasma proteomic evaluation; DNA methylation and/or mutation; and PARP inhibition by ELISA.

After completion of study therapy, patients are followed every 2 months. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00770471
Study type Interventional
Source Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Contact
Status Completed
Phase Phase 1
Start date July 13, 2009
Completion date March 1, 2012

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