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Getting to grips with migraine
Date:6/23/2013

In the largest study of migraines, researchers have found 5 genetic regions that for the first time have been linked to the onset of migraine. This study opens new doors to understanding the cause and biological triggers that underlie migraine attacks.

The team identified 12 genetic regions associated with migraine susceptibility. Eight of these regions were found in or near genes known to play a role in controlling brain circuitries and two of the regions were associated with genes that are responsible for maintaining healthy brain tissue. The regulation of these pathways may be important to the genetic susceptibility of migraines.

Migraine is a debilitating disorder that affects approximately 14% of adults. Migraine has recently been recognized as the seventh disabler in the Global Burden of Disease Survey 2010 and has been estimated to be the most costly neurological disorder. It is an extremely difficult disorder to study because no biomarkers between or during attacks have been identified so far.

"This study has greatly advanced our biological insight about the cause of migraine," says Dr Aarno Palotie, from the Wellcome Trust Sanger Institute. "Migraine and epilepsy are particularly difficult neural conditions to study; between episodes the patient is basically healthy so it's extremely difficult to uncover biochemical clues.

"We have proven that this is the most effective approach to study this type of neurological disorder and understand the biology that lies at the heart of it."

The team uncovered the underlying susceptibilities by comparing the results from 29 different genomic studies, including over 100,000 samples from both migraine patients and control samples.

They found that some of the regions of susceptibility lay close to a network of genes that are sensitive to oxidative stress, a biochemical process that results in the dysfunction of cells.

The team expects many of the genes at
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Contact: Aileen Sheehy
press.office@sanger.ac.uk
44-012-234-92368
Wellcome Trust Sanger Institute
Source:Eurekalert

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