英文摘要 | Disorders of the brain can exhibit considerable epidemiological comorbidity and often share symptoms, provoking debate about their etiologic overlap. We quantified the genetic sharing of 25 brain disorders from genome-wide association studies of 265,218 patients and 784,643 control participants and assessed their relationship to 17 phenotypes from 1,191,588 individuals. Psychiatric disorders share common variant risk, whereas neurological disorders appear more distinct from one another and from the psychiatric disorders. We also identified significant sharing between disorders and a number of brain phenotypes, including cognitive measures. Further, we conducted simulations to explore how statistical power, diagnostic misclassification, and phenotypic heterogeneity affect genetic correlations. These results highlight the importance of common genetic variation as a risk factor for brain disorders and the value of heritability-based methods in understanding their etiology. © 2018 American Association for the Advancement of Science. All rights reserved. |
作者单位 | Analytic Translational Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States; Stanley Center for Psychiatric Research, Broad Institute of mit and Harvard, Cambridge, MA, United States; Program in Medical and Population Genetics, Broad Institute of mit and Harvard, Cambridge, MA, United States; Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; UK Dementia Research Institute, University College London, London, United Kingdom; Department of Molecular Neuroscience, Institute of Neurology, University College London, London, United Kingdom; Department of Psychiatry and Behavioral Science, Stanford University, Stanford, CA, United States; Cardiff University, Medical Research Council Center for Neuropsychiatric Genetics and Genomics, Institute of Psychology, Medicine and Clinical Neuroscience, Cardiff, United Kingdom; Dementia Re...
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