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Study of Platelet Derived Growth Factor Receptor (PDGFR) in Recurrent Malignant Gliomas

2014-08-27 03:13:02 | BioPortfolio

Summary

The purpose of this study is to determine the survival, disease response, and side effects of Tasigna® (nilotinib) in patients who have malignant gliomas and are positive for Platelet Derived Growth Factor Receptor (PDGFR) amplification. This study is designed to test the hypothesis that patients with malignant gliomas with PDGFR amplification are sensitive to PDGFR kinase inhibitors.

Description

Malignant gliomas (MG), including anaplastic gliomas (AG) and glioblastoma (GBM), are the most common primary brain tumor. Standard of care (surgery, radiotherapy, and temozolomide at initial diagnosis) results in a median survival of only 14 months. For patients with recurrent disease, conventional chemotherapy is generally ineffective with response rates <20%. Clearly there is need for improved treatments. Recent genome-wide studies have confirmed that GBM is a heterogeneous group of diseases that can be subclassified by shared genetic aberrations. The implication is that, in part, the underlying genetics may determine responsiveness to treatments and thus allow us to personalize therapy.

This is an, open-label, non-randomized, phase II study with oral nilotinib in adult patients with biomarker-enriched, recurrent malignant gliomas who have developed tumor progression after standard therapy. Patients will be treated with oral nilotinib (starting with the labeled dose of 400 mg) daily until disease progression or intolerance. One cycle is defined as 28 days.

Approximately 50 evaluable patients will be enrolled in this study, with 32 (grade IV) and 18 (grade III) in separate arms.

All patients will undergo clinical evaluation after each 28-day cycle. Neuroimaging studies (MRI) will be performed at baseline, 4 weeks, 8 weeks and then after every 2 cycles (8 weeks). If a contraindication for MRI's exists, patients will undergo contrast-enhanced CT scans. Laboratory tests will be obtained weekly during the first 4 weeks, and then on days 1 and 15 of all subsequent cycles. Patients will remain on study medication unless they develop tumor progression or unacceptable toxicity.

Study Design

Allocation: Non-Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Glioma

Intervention

nilotinib

Location

The Rebecca and John Moores UCSD Cancer Center
La Jolla
California
United States
92093

Status

Recruiting

Source

University of California, San Diego

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:02-0400

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Medical and Biotech [MESH] Definitions

A malignant BRAINSTEM neoplasm of the PONS. They are more commonly found in children than adults.

A BRAIN-specific hyalectin that may play a role in terminally differentiating NEURONS. It is found highly overexpressed in primary BRAIN TUMORS and in experimental models of GLIOMA.

Rare, slow-growing, benign intraventricular tumors, often asymptomatic and discovered incidentally. The tumors are classified histologically as ependymomas and demonstrate a proliferation of subependymal fibrillary astrocytes among the ependymal tumor cells. (From Clin Neurol Neurosurg 1997 Feb;99(1):17-22)

Neoplasms located in the brain ventricles, including the two lateral, the third, and the fourth ventricle. Ventricular tumors may be primary (e.g., CHOROID PLEXUS NEOPLASMS and GLIOMA, SUBEPENDYMAL), metastasize from distant organs, or occur as extensions of locally invasive tumors from adjacent brain structures.

Benign and malignant neoplasms that arise from the optic nerve or its sheath. OPTIC NERVE GLIOMA is the most common histologic type. Optic nerve neoplasms tend to cause unilateral visual loss and an afferent pupillary defect and may spread via neural pathways to the brain.

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