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Discovery predicts patient sensitivity to important drug target in deadly brain cancer
Date:2/6/2012

Grand Rapids, Mich. A recent discovery by Van Andel Research Institute (VARI) scientists enables the prediction of patient sensitivity to proposed drug therapies for glioblastoma the most common and most aggressive malignant brain tumor in humans.

The study, published in January in the Proceedings of the National Academy of Science, investigated glioblastoma models characterized by cell signaling activation and gene amplification for their susceptibility to inhibitors of both the human MET oncogene and the epidermal growth factor receptor (EFGR).

An oncogene is a gene with the potential to cause cancer. In tumor cells, they are often mutated or expressed at high levels. High MET levels often occur in human tumors, and cells with inappropriate MET signaling produce activity that potently affects the spread of cancer. This signaling is implicated in most types of human cancers and high MET expression often correlates with poor prognosis. Mutations affecting EGFR expression or activity are also linked to cancer.

"Because oncogene MET and EGFR inhibitors are in clinical development against several types of cancer, including glioblastoma, it is important to identify predictive markers that indicate patient subgroups suitable for such therapies," said VARI Research Scientist Qian Xie, Ph.D., lead author of the study.

"Studies have shown that targeting MET signaling can have potent antitumor effects," said Co-Author George F. Vande Woude, Ph.D., Head of the VARI Laboratory of Molecular Oncology. "Therefore, it is important to understand the mechanisms leading to HGF/MET sensitivity and to identify the patient subgroups most likely to benefit from MET-targeted therapeutics."

Dr. Vande Woude's career can be characterized by the uniquely broad scope of his work with MET and its molecular partner hepatocyte growth factor (HGF) from the original cloning and characterization of the gene, through explaining the role of t
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Contact: Tim Hawkins
tim.hawkins@vai.org
616-234-5519
Van Andel Research Institute
Source:Eurekalert

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