Mutation screening of the neurexin 1 gene in thai patients with intellectual disability and autism spectrum disorder.

Abstract:

AIM:Neurexin 1 has two major protein isoforms using alternative promoters, coding for the alpha-neurexin 1 (α-NRXN1) and beta-neurexin 1 (β-NRXN1) genes. This study is to explore the possibility that variants of the NRXN1 gene predispose to intellectual disability (ID) and autism spectrum disorder (ASD). METHODS:The coding regions in 24 exons and exon-intron boundaries of the NRXN1 gene were investigated in 115 Thai patients with ID and ASD by direct DNA sequencing. RESULTS:Nine novel variants of the NRXN1 gene were identified. Four novel variants were found in the β-NRXN1 gene, one variant of six GGC repeats in exon 1, and three variants at the 5'UTR. Five novel variants were identified in the α-NRXN1 gene, four intronic variants and one missense variant in exon 14 (c.2713T>A or p.F905I). CONCLUSION:Mutation screening of the NRXN1gene in patients with ID and ASD may be useful to identify potential variants predisposing to ID and ASD. However, further studies utilizing protein functional analysis of the novel variants are required for a more definite conclusion.

authors

Yangngam S,Plong-On O,Sripo T,Roongpraiwan R,Hansakunachai T,Wirojanan J,Sombuntham T,Ruangdaraganon N,Limprasert P

doi

10.1089/gtmb.2014.0003

subject

Has Abstract

pub_date

2014-07-01 00:00:00

pages

510-5

issue

7

eissn

1945-0265

issn

1945-0257

journal_volume

18

pub_type

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