Rare complete knockouts in humans: population distribution and significant role in autism spectrum disorders - PubMed (original) (raw)
. 2013 Jan 23;77(2):235-42.
doi: 10.1016/j.neuron.2012.12.029.
Soumya Raychaudhuri, Stephan J Sanders, Christine Stevens, Aniko Sabo, Daniel G MacArthur, Benjamin M Neale, Andrew Kirby, Douglas M Ruderfer, Menachem Fromer, Monkol Lek, Li Liu, Jason Flannick, Stephan Ripke, Uma Nagaswamy, Donna Muzny, Jeffrey G Reid, Alicia Hawes, Irene Newsham, Yuanqing Wu, Lora Lewis, Huyen Dinh, Shannon Gross, Li-San Wang, Chiao-Feng Lin, Otto Valladares, Stacey B Gabriel, Mark dePristo, David M Altshuler, Shaun M Purcell; NHLBI Exome Sequencing Project; Matthew W State, Eric Boerwinkle, Joseph D Buxbaum, Edwin H Cook, Richard A Gibbs, Gerard D Schellenberg, James S Sutcliffe, Bernie Devlin, Kathryn Roeder, Mark J Daly
Affiliations
- PMID: 23352160
- PMCID: PMC3613849
- DOI: 10.1016/j.neuron.2012.12.029
Rare complete knockouts in humans: population distribution and significant role in autism spectrum disorders
Elaine T Lim et al. Neuron. 2013.
Abstract
To characterize the role of rare complete human knockouts in autism spectrum disorders (ASDs), we identify genes with homozygous or compound heterozygous loss-of-function (LoF) variants (defined as nonsense and essential splice sites) from exome sequencing of 933 cases and 869 controls. We identify a 2-fold increase in complete knockouts of autosomal genes with low rates of LoF variation (≤ 5% frequency) in cases and estimate a 3% contribution to ASD risk by these events, confirming this observation in an independent set of 563 probands and 4,605 controls. Outside the pseudoautosomal regions on the X chromosome, we similarly observe a significant 1.5-fold increase in rare hemizygous knockouts in males, contributing to another 2% of ASDs in males. Taken together, these results provide compelling evidence that rare autosomal and X chromosome complete gene knockouts are important inherited risk factors for ASD.
Copyright © 2013 Elsevier Inc. All rights reserved.
Figures
Figure 1. Expression Patterns of the Complete Knockouts
(A) The enrichment of rare complete knockouts in cases versus controls. (B) The enrichment observed in rare complete knockouts is not observed in the common complete knockouts. The x-axis indicates the average number of events per individual in cases and controls and the numbers above the barplots indicate the total number of such events in cases and controls, with the odds ratios (OR) shown above.
Comment in
- Rare inherited variation in autism: beginning to see the forest and a few trees.
Stein JL, Parikshak NN, Geschwind DH. Stein JL, et al. Neuron. 2013 Jan 23;77(2):209-11. doi: 10.1016/j.neuron.2013.01.010. Neuron. 2013. PMID: 23352155 Free PMC article.
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