Volume 164, Issue 3 pp. 782-788
Clinical Report
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Characterization of a 520 kb deletion on chromosome 15q26.1 including ST8SIA2 in a patient with behavioral disturbance, autism spectrum disorder, and epilepsy

Benjamin Kamien

Corresponding Author

Benjamin Kamien

Hunter Genetics, Newcastle, New South Wales, Australia

School of Medicine and Public Health, The University of Newcastle, Newcastle, New South Wales, Australia

Correspondence to:

Benjamin Kamien, Hunter Genetics, P.O. Box 84, Waratah 2298, NSW, Australia. E-mail: [email protected]

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James Harraway

James Harraway

Sullivan Nicolaides Pathology, Brisbane, Queensland, Australia

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Ben Lundie

Ben Lundie

Sullivan Nicolaides Pathology, Brisbane, Queensland, Australia

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Lex Smallhorne

Lex Smallhorne

Sullivan Nicolaides Pathology, Brisbane, Queensland, Australia

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Vicki Gibbs

Vicki Gibbs

Autism Spectrum Australia, Sydney, New South Wales, Australia

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Anna Heath

Anna Heath

Neuroscience Research Australia, Sydney, New South Wales, Australia

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Janice M. Fullerton

Janice M. Fullerton

Neuroscience Research Australia, Sydney, New South Wales, Australia

School of Medical Sciences, University of New South Wales, Sydney, New South Wales, Australia

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First published: 19 December 2013
Citations: 35

Abstract

We present a patient with a behavioral disorder, epilepsy, and autism spectrum disorder who has a 520 kb chromosomal deletion at 15q26.1 encompassing three genes: ST8SIA2, C15orf32, and FAM174B. Alpha-2,8-Sialyltransferase 2 (ST8SIA2) is expressed in the developing brain and appears to play an important role in neuronal migration, axon guidance and synaptic plasticity. It has recently been implicated in a genome wide association study as a potential factor underlying autism, and has also been implicated in the pathogenesis of bipolar disorder and schizophrenia. This case provides supportive evidence that ST8SIA2 haploinsufficiency may play a role in neurobehavioral phenotypes. © 2013 Wiley Periodicals, Inc.

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