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Submitter Name: Joey W. Trampush Submitted email: [email protected] GWAS of Cognitive Abilities and Risk for Substance Abuse Joey Trampush1, and the Cognitive Genomics Consortium (COGENT) 1Department of Psychiatry and the Behavioral Sciences, Keck School of Medicine, University of Southern California COGENT has led or collaborated on a series of recent large-scale genome-wide association studies (GWAS) of general cognitive function, intelligence, and educational attainment. In samples ranging in size from 35,298[1] to 107,207[2] to 269,867[3] to 300,486[4] to 1,131,881[5], we have identified hundreds of new independent loci, genes, functional pathways, neurodevelopmental processes, and genetic correlations associated with human cognitive abilities. Functional biological annotation methods have revealed GWAS hits for cognitive function are significantly associated with Mendelian intellectual disability disorders, neurogenesis, neuron differentiation, synaptic structure, and potential nootropic pharmacologic agents. Gene expression analyses have shown genes associated with cognitive function are strongly expressed in the brain relative to other tissue types, specifically in striatal medium spiny neurons and cortical and hippocampal pyramidal neurons. Transcriptome-wide analyses have revealed cognitive loci are strongly expressed in neurons (not glia) and are associated with fetal brain expression. We have found enrichment of genetic effects in conserved and coding regions, and identified ~150 nonsynonymous exonic variants linked to intelligence. Mendelian randomization has shown protective effects of intelligence for Alzheimer’s and ADHD, and bidirectional causation with strong pleiotropy for schizophrenia. In independent samples, polygenic risk scores for cognition and educational attainment account for 7-10% of the variance in cognitive performance and 11- 13% of the variance in years of schooling. Genome-wide pleiotropy has proven ubiquitous, including significant genetic correlations between cognitive function and cigarette smoking behavior, alcohol dependence, and drug use. Relevance of these findings to the genetics of substance abuse risk will be discussed. .

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View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Hofstra Northwell Academic Works (Hofstra Northwell School of Medicine) Donald and Barbara Zucker School of Medicine Journal Articles Academic Works 2015 Independent evidence for an association between general cognitive ability and a genetic locus for educational attainment J. W. Trampush Hofstra Northwell School of Medicine T. Lencz Hofstra Northwell School of Medicine S. Guha Northwell Health S. Mukherjee Northwell Health P. DeRosse Northwell Health See next page for additional authors Follow this and additional works at: https://academicworks.medicine.hofstra.edu/articles Part of the Psychiatry Commons Recommended Citation Trampush JW, Lencz T, Guha S, Mukherjee S, DeRosse P, John M, Andreassen O, Deary I, Glahn D, Malhotra AK, . Independent evidence for an association between general cognitive ability and a genetic locus for educational attainment. 2015 Jan 01; 168(5):Article 927 [ p.]. Available from: https://academicworks.medicine.hofstra.edu/articles/927. Free full text article. This Article is brought to you for free and open access by Donald and Barbara Zucker School of Medicine Academic Works. It has been accepted for inclusion in Journal Articles by an authorized administrator of Donald and Barbara Zucker School of Medicine Academic Works. Authors J. W. Trampush, T. Lencz, S. Guha, S. Mukherjee, P. DeRosse, M. John, O. A. Andreassen, I. J. Deary, D. C. Glahn, A. K. Malhotra, and +41 additional authors This article is available at Donald and Barbara Zucker School of Medicine Academic Works: https://academicworks.medicine.hofstra.edu/articles/927 HHS Public Access Author manuscript Author Manuscript Author ManuscriptAm J Med Author Manuscript Genet B Neuropsychiatr Author Manuscript Genet.
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