Family based genome-wide copy number scan identifies complex rearrangements at 17q21.31 in dyslexics

Avinash, M. V. and Saldanha, Marita and Prakash, P. and Ramachandra, N. B. (2014) Family based genome-wide copy number scan identifies complex rearrangements at 17q21.31 in dyslexics. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, 165 (7). pp. 572-580. ISSN 1552-485X

[img] Text (Full Text)
Family Based Genome-.pdf - Published Version
Restricted to Registered users only

Download (984kB) | Request a copy
Official URL:


Developmental dyslexia (DD) is a complex heritable disorder with unexpected difficulty in learning to read and spell despite adequate intelligence, education, environment, and normal senses. We performed genome-wide screening for copy number variations (CNVs) in 10 large Indian dyslexic families using Affymetrix Genome-Wide Human SNP Array 6.0. Results revealed the complex genomic rearrangements due to one non-contiguous deletion and five contiguous micro duplications and micro deletions at 17q21.31 region in three dyslexic families. CNVs in this region harbor the genes KIAA1267, LRRC37A, ARL17A/B, NSFP1, and NSF. The CNVs in case 1 and case 2 at this locus were found to be in homozygous state and case 3 was a de novo CNV. These CNVs were found with at least one CNV having a common break and end points in the parents. This cluster of genes containing NSF is implicated in learning, cognition, and memory, though not formally associated with dyslexia. Molecular network analysis of these and other dyslexia related module genes suggests NSF and other genes to be associated with cellular/vesicular membrane fusion and synaptic transmission. Thus, we suggest that NSF in this cluster would be the nearest gene responsible for the learning disability phenotype. © 2014 Wiley Periodicals, Inc.

Item Type: Article
Uncontrolled Keywords: dyslexia, CNVs, 17q21.31 region, NSF, synaptic transmission
Subjects: B Life Science > Genetics and Genomics
Divisions: Department of > Genetics and Genomics
Depositing User: MUL SWAPNA user
Date Deposited: 10 Oct 2019 10:36
Last Modified: 10 Oct 2019 10:36

Actions (login required)

View Item View Item