Please cite this article as follows: Gauthier J, Spiegelman D, Piton A, Lafrenière RG, St-Onge J, Lapointe L, Hamdan FF, Cossette P, Mottron L, Fombonne É, Joober R, Marineau C, Drapeau P, Rouleau GA. 2009. Novel De Novo SHANK3 Mutation in Autistic Patients. Am J Med Genet Part B 150B:421–424.
Brief Research Communication
Novel de novo SHANK3 mutation in autistic patients†
Article first published online: 9 JUL 2008
Copyright © 2008 Wiley-Liss, Inc.
American Journal of Medical Genetics Part B: Neuropsychiatric Genetics
Volume 150B, Issue 3, pages 421–424, 5 April 2009
How to Cite
Gauthier, J., Spiegelman, D., Piton, A., Lafrenière, R. G., Laurent, S., St-Onge, J., Lapointe, L., Hamdan, F. F., Cossette, P., Mottron, L., Fombonne, É., Joober, R., Marineau, C., Drapeau, P. and Rouleau, G. A. (2009), Novel de novo SHANK3 mutation in autistic patients. Am. J. Med. Genet., 150B: 421–424. doi: 10.1002/ajmg.b.30822
- Issue published online: 17 MAR 2009
- Article first published online: 9 JUL 2008
- Manuscript Accepted: 28 MAY 2008
- Manuscript Received: 14 MAR 2008
- Splice site;
- Autism spectrum disorder;
- de novo;
- Pervasive developmental disorder
A number of studies have confirmed that genetic factors play an important role in autism spectrum disorder (ASD). More recently de novo mutations in the SHANK3 gene, a synaptic scaffolding protein, have been associated with the ASD phenotype. As part of our gene discovery strategy, we sequenced the SHANK3 gene in a cohort of 427 ASD subjects and 190 controls. Here, we report the identification of two putative causative mutations: one being a de novo deletion at an intronic donor splice site and one missense transmitted from an epileptic father. We were able to confirm the deleterious effect of the splice site deletion by RT-PCR using mRNA extracted from cultured lymphoblastoid cells. The missense mutation, a leucine to proline at amino acid position 68, is perfectly conserved across all species examined, and would be predicted to disrupt an alpha-helical domain. These results further support the role of SHANK3 gene disruption in the etiology of ASD. © 2008 Wiley-Liss, Inc.