Seeing what’s inside a tumor

Thursday, January 12, 2012 - 05:30 in Health & Medicine

Gliomas, the most common types of brain tumor, are also among the deadliest cancers: Their mortality rate is nearly 100 percent, in part because there are very few treatments available.  A team of researchers from MIT, Harvard University, Massachusetts General Hospital (MGH) and Agios Pharmaceuticals has now developed a way to identify a particular subset of brain tumors, which may help doctors choose treatments and create new drugs that target the disease’s underlying genetic mutation. Scientists have known for several years that many brain tumors involve a mutation in the gene for an enzyme called isocitrate dehydrogenase (IDH). This enzyme is involved in cell metabolism — the process of breaking down sugar molecules to extract energy from them. IDH mutations are found in up to 86 percent of low-grade gliomas, which have a better prognosis than high-grade gliomas, also called glioblastomas. Patients with low-grade gliomas can survive for years,...

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