SNPwatch: Researchers Link Migraine Susceptibility to Genes Involved in Glutamate Regulation

Headaches are a pain — literally. But while most people see them as a temporary nuisance, many others find them extremely debilitating. For the 8% of men and 17% of women who suffer from migraine headaches, these long, recurring episodes can include more than just throbbing pain: vomiting, chills, sensitivity to light or sound, or trouble concentrating are just a few of the possible symptoms. Some people experience a set of symptoms prior to their migraine attacks known as “aura” but for others the attacks come without warning. Because the condition is complex and manifests differently in each person, the biological causes of migraine have been difficult to determine. New research, however, is implicating common genetic variants which may help to elucidate the biological underpinnings of the disease. In a study published this week in Nature Genetics, a team of scientists from the International Headache Genetics Consortium (IHGC)  identified a SNP associated with migraine susceptibility. The researchers compared almost 6,000 migraine sufferers to more than 50,000 people who did not suffer from migraines, all of European ancestry, and found that the less common A version of was associated with about 1.2 times higher odds of migraine headache. Although the SNP is not located within any known genes, it is found in a region of the genome that contains genes involved in the regulation of a neurotransmitter called glutamate. When the IHGC team looked at the nearby genes, they observed that was significantly correlated with the expression levels of MTDH. MTDH regulates another gene that encodes a protein that transports glutamate in the brain. Previous research has suggested that an imbalance in glutamate levels may contribute to the development of migraines, in addition to other neurological disorders, but the exact mechanisms are still unknown. More studies are needed to confirm and elaborate on the IHGC’s findings. SNPwatch gives you the latest news about research linking various traits and conditions to individual genetic variations. These studies are exciting because they offer a glimpse into how genetics may affect our bodies and health; but in most cases, more work is needed before this research can provide information of value to individuals. For that reason it is important to remember that like all information we provide, the studies we describe in SNPwatch are for research and educational purposes only. SNPwatch is not intended to be a substitute for professional medical advice; you should always seek the advice of your physician or other appropriate healthcare professional with any questions you may have regarding diagnosis, cure, treatment or prevention of any disease or other medical condition.
  • Lydia Cano Capri de Necochea

    Thank you for the information, very interesting. I am curious about migraines because although I never have had one, my mother had them from the time she was nine years old until 66 when she had 1 large round mass with 11 small ones attached to her female organs removed. Her migrains disappeared after that.

  • Wow that was odd. I just wrote an extremely long
    comment but after I clicked submit my comment didn’t show up. Grrrr… well I’m not writing all that over again.
    Regardless, just wanted to say great blog!

  • jamie

    there’s some text missing. for instance, where it says “the less common A version of was associated with” — um, the less common A version of [WHAT?] was associated? this omitted text is apparent a couple of times in this article and a few times in another article. what the heck is going on? please don’t tell me that they had to redact informative text about research findings because of the whole FDA decision… i think that amounts to censorship, doesn’t it? well, i hope that’s not the case. i hope it’s a just a glitch in the website where certain text isn’t displaying properly, and it will be fixed soon.

    • H.Leisure

      Just check out PubMed for the studies