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Genetic contributions to variation in general cognitive function: A meta-analysis of genome-wide association studies in the CHARGE consortium (N=53 949)
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Genetic copy number variation and general cognitive ability.
In: PLoS One , 7 (12) , Article e37385 . (2012) (2012)
Abstract: Differences in genomic structure between individuals are ubiquitous features of human genetic variation. Specific copy number variants (CNVs) have been associated with susceptibility to numerous complex psychiatric disorders, including attention-deficit-hyperactivity disorder, autism-spectrum disorders and schizophrenia. These disorders often display co-morbidity with low intelligence. Rare chromosomal deletions and duplications are associated with these disorders, so it has been suggested that these deletions or duplications may be associated with differences in intelligence. Here we investigate associations between large (≥500kb), rare (<1% population frequency) CNVs and both fluid and crystallized intelligence in community-dwelling older people. We observe no significant associations between intelligence and total CNV load. Examining individual CNV regions previously implicated in neuropsychological disorders, we find suggestive evidence that CNV regions around SHANK3 are associated with fluid intelligence as derived from a battery of cognitive tests. This is the first study to examine the effects of rare CNVs as called by multiple algorithms on cognition in a large non-clinical sample, and finds no effects of such variants on general cognitive ability.
URL: http://discovery.ucl.ac.uk/1382883/1/1382883.pdf
http://discovery.ucl.ac.uk/1382883/
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Genome-wide association studies establish that human intelligence is highly heritable and polygenic
In: MOL PSYCHIATR , 16 (10) 996 - 1005. (2011) (2011)
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Genome-wide association studies establish that human intelligence is highly heritable and polygenic
Davies, G.; Tenesa, A.; Payton, A.. - : Nature Publishing Group, 2011
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