Polygenic transmission disequilibrium confirms that common and rare variation act additively to create risk for autism spectrum disorders.
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AuthorsWeiner, Daniel J
Wigdor, Emilie M
Walters, Raymond K
Kosmicki, Jack A
Samocha, Kaitlin E
Goldstein, Jacqueline I
Hougaard, David M
Sanders, Stephan J
Mortensen, Preben Bo
Børglum, Anders D
Smith, George Davey
Daly, Mark J
Robinson, Elise B
MetadataShow full item record
CitationPolygenic transmission disequilibrium confirms that common and rare variation act additively to create risk for autism spectrum disorders. 2017, 49 (7):978-985 Nat. Genet.
AbstractAutism spectrum disorder (ASD) risk is influenced by common polygenic and de novo variation. We aimed to clarify the influence of polygenic risk for ASD and to identify subgroups of ASD cases, including those with strongly acting de novo variants, in which polygenic risk is relevant. Using a novel approach called the polygenic transmission disequilibrium test and data from 6,454 families with a child with ASD, we show that polygenic risk for ASD, schizophrenia, and greater educational attainment is over-transmitted to children with ASD. These findings hold independent of proband IQ. We find that polygenic variation contributes additively to risk in ASD cases who carry a strongly acting de novo variant. Lastly, we show that elements of polygenic risk are independent and differ in their relationship with phenotype. These results confirm that the genetic influences on ASD are additive and suggest that they create risk through at least partially distinct etiologic pathways.
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RightsArchived with thanks to Nature genetics
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