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International study yields important clues to the genetics of epilepsy
Date:6/16/2014

This news release is available in French.

An international team of researchers has discovered a significant genetic component of Idiopathic Generalized Epilepsy (IGE), the most common form of epilepsy. Epilepsy is a neurological disorder characterized by sudden, uncontrolled electrical discharges in the brain expressed as a seizure. The new research, published in this week's issue of EMBO Reports, implicates a mutation in the gene for a protein, known as cotransporter KCC2.

KCC2 maintains the correct levels of chloride ions in neurons, playing a major part in regulating excitation and inhibition of neurons. The results indicate that a genetic mutation of KCC2 might be a risk factor for developing IGE.

"We found a clear statistical association between two variants of KCC2 and severe IGE in a large French-Canadian patient sample," said Dr. Guy Rouleau, Director of the Montreal Neurological Institute and Hospital-The Neuro, at McGill University and the McGill University Health Centre, and senior author of the study. "Our data not only corroborate recent findings by other groups but vastly extend them from genetic, physiological and biochemical standpoints." The first authors on the paper are Dr. Kristopher Kahle, chief neurosurgery resident at Massachusetts General Hospital and post-doctoral fellow at Harvard University, and Dr. Nancy Merner, a former post-doctoral fellow in Dr. Rouleau's laboratory and now a professor at Auburn University.

The study examined 380 French Canadians with IGE living in Montreal and Quebec City. Results were compared to data from a control group of more than 1,200 people. "KCC2 is a hot topic in neuroscience given its important role in neuronal signaling and in its potential role in neurological diseases such as epil
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Contact: Anita Kar
anita.kar@mcgill.ca
514-398-3376
McGill University
Source:Eurekalert

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