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Rates, distribution and implications of postzygotic mosaic mutations in autism spectrum disorder

Lim, Elaine T, Uddin, Mohammed, De Rubeis, Silvia, Chan, Yingleong, Kamumbu, Anne S., Zhang, Xiaochang, D'Gama, Alissa M., Kim, Sonia N., Hill, Robert Sean, Goldberg, Arthur P., Poultney, Christopher, Minshew, Nancy J., Kushima, Itaru, Aleksic, Branko, Ozaki, Norio, Parellada, Mara, Arango, Celso, Penzol, Maria J., Carracedo, Angel, Kolevzon, Alexander, Hultman, Christina M., Weiss, Lauren A., Fromer, Menachem, Chiocchetti, Andreas G., Freitag, Christine M., Church, George M., Scherer, Stephen W., Buxbaum, Joseph D., Walsh, Christopher A. and Anney, Richard 2017. Rates, distribution and implications of postzygotic mosaic mutations in autism spectrum disorder. Nature Neuroscience 20 (9) , pp. 1217-1224. 10.1038/nn.4598

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We systematically analyzed postzygotic mutations (PZMs) in whole-exome sequences from the largest collection of trios (5,947) with autism spectrum disorder (ASD) available, including 282 unpublished trios, and performed resequencing using multiple independent technologies. We identified 7.5% of de novo mutations as PZMs, 83.3% of which were not described in previous studies. Damaging, nonsynonymous PZMs within critical exons of prenatally expressed genes were more common in ASD probands than controls (P < 1 × 10−6), and genes carrying these PZMs were enriched for expression in the amygdala (P = 5.4 × 10−3). Two genes (KLF16 and MSANTD2) were significantly enriched for PZMs genome-wide, and other PZMs involved genes (SCN2A, HNRNPU and SMARCA4) whose mutation is known to cause ASD or other neurodevelopmental disorders. PZMs constitute a significant proportion of de novo mutations and contribute importantly to ASD risk.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Additional Information: Richard Anney is a member of the Autism Sequencing Consortium
Publisher: Nature Publishing Group
ISSN: 1097-6256
Date of First Compliant Deposit: 4 January 2019
Date of Acceptance: 20 May 2017
Last Modified: 03 Feb 2021 00:54

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