Mutations of ANK3 identified by exome sequencing are associated with autism susceptibility

Human Mutation
Cheng BiZhong Sheng Sun

Abstract

Autism spectrum disorders (ASDs) are common neurodevelopmental disorders with a strong genetic etiology. However, due to the extreme genetic heterogeneity of ASDs, traditional approaches for gene discovery are challenging. Next-generation sequencing technologies offer an opportunity to accelerate the identification of the genetic causes of ASDs. Here, we report the results of whole-exome sequence in a cohort of 20 ASD patients. By extensive bioinformatic analysis, we identified novel mutations in seven genes that are implicated in synaptic function and neurodevelopment. After sequencing an additional 47 ASD samples, we identified three different missense mutations in ANK3 in four unrelated ASD patients, one of which, c.4705T>G (p.S1569A), is a de novo mutation. Given the fact that ANK3 has been shown to strongly associate with schizophrenia and bipolar disorder, our findings support an association between ANK3 mutations and ASD susceptibility and imply a shared molecular pathophysiology between ASDs and other neuropsychiatric disorders.

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Related Concepts

ANK3 protein, human
Autistic Disorder
DNA Sequence
Genealogical Tree
Conserved Sequence
Point Mutation
Sequence Determinations, DNA
Ankyrins
Genetic Predisposition to Disease
Missense Mutation

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