Disruption of the ASTN2/TRIM32 locus at 9q33.1 is a risk factor in males for autism spectrum disorders, ADHD and other neurodevelopmental phenotypes.

30 Jan , 2014 News from the world

Hum Mol Genet. 2014 Gen 14.

Authors

Lionel AC1, Tammimies K, Vaags AK, Rosenfeld JA, Ahn JW, Merico D, Noor A, Runke CK, Pillalamarri VK, Carter MT, Gazzellone MJ, Thiruvahindrapuram B,Fagerberg C, Laulund LW, Pellecchia G, Lamoureux S, Deshpande C, Clayton-Smith J, White AC, Leather S, Trounce J, Melanie Bedford H, Hatchwell E, Eis PS, Yuen RK, Walker S, Uddin M, Geraghty MT, Nikkel SM, Tomiak EM, Fernandez BA, Soreni N, Crosbie J, Arnold PD, Schachar RJ, Roberts W, Paterson AD,So J, Szatmari P, Chrysler C, Woodbury-Smith M, Brian Lowry R, Zwaigenbaum L, Mandyam D, Wei J, Macdonald JR, Howe JL, Nalpathamkalam T, Wang Z,Tolson D, Cobb DS, Wilks TM, Sorensen MJ, Bader PI, An Y, Wu BL, Musumeci SA, Romano C, Postorivo D, Nardone AM, Monica MD, Scarano G, Zoccante L,Novara F, Zuffardi O, Ciccone R, Antona V, Carella M, Zelante L, Cavalli P, Poggiani C, Cavallari U, Argiropoulos B, Chernos J, Brasch-Andersen C, Speevak M,Fichera M, Ogilvie CM, Shen Y, Hodge JC, Talkowski ME, Stavropoulos DJ, Marshall CR, Scherer SW.

Abstract

Rare copy number variants (CNVs) disrupting ASTN2 or both ASTN2 and TRIM32 have been reported at 9q33.1 by genome-wide studies in a few individuals with neurodevelopmental disorders (NDDs). The vertebrate-specific astrotactins, ASTN2 and its paralog ASTN1, have key roles in glial-guided neuronal migration during brain development. To determine the prevalence of astrotactin mutations and delineate their associated phenotypic spectrum, we screened ASTN2/TRIM32 and ASTN1 (1q25.2) for exonic CNVs in clinical microarray data from 89 985 individuals across 10 sites, including 64 114 NDD subjects. In this clinical dataset, we identified 46 deletions and 12 duplications affecting ASTN2. Deletions of ASTN1 were much rarer. Deletions near the 3′ terminus of ASTN2, which would disrupt  …read more!

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