Functional impact of global rare copy number variation in autism spectrum disorders.

Authors:
Dalila Pinto Alistair T Pagnamenta Lambertus Klei Richard Anney Daniele Merico Regina Regan Judith Conroy Tiago R Magalhaes Catarina Correia Brett S Abrahams Joana Almeida Elena Bacchelli Gary D Bader Anthony J Bailey Gillian Baird Agatino Battaglia Tom Berney Nadia Bolshakova Sven Bölte Patrick F Bolton Thomas Bourgeron Sean Brennan Jessica Brian Susan E Bryson Andrew R Carson Guillermo Casallo Jillian Casey Brian H Y Chung Lynne Cochrane Christina Corsello Emily L Crawford Andrew Crossett Cheryl Cytrynbaum Geraldine Dawson Maretha de Jonge Richard Delorme Irene Drmic Eftichia Duketis Frederico Duque Annette Estes Penny Farrar Bridget A Fernandez Susan E Folstein Eric Fombonne Christine M Freitag John Gilbert Christopher Gillberg Joseph T Glessner Jeremy Goldberg Andrew Green Jonathan Green Stephen J Guter Hakon Hakonarson Elizabeth A Heron Matthew Hill Richard Holt Jennifer L Howe Gillian Hughes Vanessa Hus Roberta Igliozzi Cecilia Kim Sabine M Klauck Alexander Kolevzon Olena Korvatska Vlad Kustanovich Clara M Lajonchere Janine A Lamb Magdalena Laskawiec Marion Leboyer Ann Le Couteur Bennett L Leventhal Anath C Lionel Xiao-Qing Liu Catherine Lord Linda Lotspeich Sabata C Lund Elena Maestrini William Mahoney Carine Mantoulan Christian R Marshall Helen McConachie Christopher J McDougle Jane McGrath William M McMahon Alison Merikangas Ohsuke Migita Nancy J Minshew Ghazala K Mirza Jeff Munson Stanley F Nelson Carolyn Noakes Abdul Noor Gudrun Nygren Guiomar Oliveira Katerina Papanikolaou Jeremy R Parr Barbara Parrini Tara Paton Andrew Pickles Marion Pilorge Joseph Piven Chris P Ponting David J Posey Annemarie Poustka Fritz Poustka Aparna Prasad Jiannis Ragoussis Katy Renshaw Jessica Rickaby Wendy Roberts Kathryn Roeder Bernadette Roge Michael L Rutter Laura J Bierut John P Rice Jeff Salt Katherine Sansom Daisuke Sato Ricardo Segurado Ana F Sequeira Lili Senman Naisha Shah Val C Sheffield Latha Soorya Inês Sousa Olaf Stein Nuala Sykes Vera Stoppioni Christina Strawbridge Raffaella Tancredi Katherine Tansey Bhooma Thiruvahindrapduram Ann P Thompson Susanne Thomson Ana Tryfon John Tsiantis Herman Van Engeland John B Vincent Fred Volkmar Simon Wallace Kai Wang Zhouzhi Wang Thomas H Wassink Caleb Webber Rosanna Weksberg Kirsty Wing Kerstin Wittemeyer Shawn Wood Jing Wu Brian L Yaspan Danielle Zurawiecki Lonnie Zwaigenbaum Joseph D Buxbaum Rita M Cantor Edwin H Cook Hilary Coon Michael L Cuccaro Bernie Devlin Sean Ennis Louise Gallagher Daniel H Geschwind Michael Gill Jonathan L Haines Joachim Hallmayer Judith Miller Anthony P Monaco John I Nurnberger Andrew D Paterson Margaret A Pericak-Vance Gerard D Schellenberg Peter Szatmari Astrid M Vicente Veronica J Vieland Ellen M Wijsman Stephen W Scherer James S Sutcliffe Catalina Betancur

Nature 2010 Jul 9;466(7304):368-72. Epub 2010 Jun 9.

The Centre for Applied Genomics and Program in Genetics and Genomic Biology, The Hospital for Sick Children, Toronto, Ontario M5G 1L7, Canada.

The autism spectrum disorders (ASDs) are a group of conditions characterized by impairments in reciprocal social interaction and communication, and the presence of restricted and repetitive behaviours. Individuals with an ASD vary greatly in cognitive development, which can range from above average to intellectual disability. Although ASDs are known to be highly heritable ( approximately 90%), the underlying genetic determinants are still largely unknown. Here we analysed the genome-wide characteristics of rare (<1% frequency) copy number variation in ASD using dense genotyping arrays. When comparing 996 ASD individuals of European ancestry to 1,287 matched controls, cases were found to carry a higher global burden of rare, genic copy number variants (CNVs) (1.19 fold, P = 0.012), especially so for loci previously implicated in either ASD and/or intellectual disability (1.69 fold, P = 3.4 x 10(-4)). Among the CNVs there were numerous de novo and inherited events, sometimes in combination in a given family, implicating many novel ASD genes such as SHANK2, SYNGAP1, DLGAP2 and the X-linked DDX53-PTCHD1 locus. We also discovered an enrichment of CNVs disrupting functional gene sets involved in cellular proliferation, projection and motility, and GTPase/Ras signalling. Our results reveal many new genetic and functional targets in ASD that may lead to final connected pathways.

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http://dx.doi.org/10.1038/nature09146DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3021798PMC
July 2010
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