Forty four genomic variants linked to major depression

NORTH CAROLINA: A new meta analysis of more than 135,000 peoplewithmajor depression and more than 344 000 controls has identified 44 genomic variants or loci that have a statistically significant association with depression. Of these 44 loci 30 are newly discovered while 14 had been identified in previous studies.

In addition the study identified 153 significant genes and found that major depression shared six loci that are also associated with schizophrenia. Results from the multinational genome wide association study were published April 26 in Nature Genetics. The studywas an unprecedented global effort by over 200 scientistswhoworkwith the Psychiatric Genomics Consortium. Co leaders of the study are Patrick F. SullivanMD FRANZCP Yeargen Distinguished Professor of Psychiatry and Genetics and Director of the Center for Psychiatric Genomics at the University of North Carolina School of Medicine and Naomi Wray PhD Professorial Research Fellowat the University of Queensland in Australia. This study is a game changer Sullivan said. Figuring out the genetic basis ofmajor depression has been really hard.

A huge number of researchers across the world collaborated to make this paper and we now have a deeper look than ever before into the basis of this awful and impairing humanmalady.Withmoreworkwe should be able to develop tools important for treatment and even prevention of major depression. We show that we all carry genetic variants for depression but those with a higher burden are more susceptible Wray said. We know that many life experiences also contribute to risk of depression but identifying the genetic factors opens new doors for research into the biological drivers. This pioneering study is incredibly important for two reasons said Josh Gordon MD PHD Director of the U.S.

National Institute of Mental Health. Dr. Gordon was not an author on this paper. First it reaffirms the value of large scale collaborations particularly in identifying the complex genetics underlying psychiatric illness. Second it confirms the genetic roots for depression offering important biological clues that we hope will lead to new and better treatments. Major depression represents one of theworld s most serious public health problems said Steven E. Hyman MD former director of the U.S. National Institute of Mental Health who is now Director of the Stanley Center for Psychiatric Research at the Broad Institute ofMIT and Harvard. Dr. Hyman was not an author on this paper. Despite decades of effort there have been until now only scant insights into its biological mechanisms. This unfortunate state of affairs has severely impeded treatment development leaving the many people who suffer from depression with limited options. This landmark study represents a major step toward elucidating the biological underpinnings of depression Hyman said.