These authors contributed equally to this work.
High frequency of rare copy number variants affecting functionally related genes in patients with structural brain malformations†
Article first published online: 23 SEP 2011
© 2011 Wiley Periodicals, Inc.
Volume 32, Issue 12, pages 1427–1435, December 2011
How to Cite
Kariminejad, R., Lind-Thomsen, A., Tümer, Z., Erdogan, F., Ropers, H. H., Tommerup, N., Ullmann, R. and Møller, R. S. (2011), High frequency of rare copy number variants affecting functionally related genes in patients with structural brain malformations. Hum. Mutat., 32: 1427–1435. doi: 10.1002/humu.21585
Communicated by Christine Van Broeckhoven
- Issue published online: 14 NOV 2011
- Article first published online: 23 SEP 2011
- Accepted manuscript online: 31 AUG 2011 01:27PM EST
- Manuscript Accepted: 26 JUL 2011
- Manuscript Received: 4 APR 2011
- Max Planck Innovation Funds; The Danish National Research Foundation; The Lundbeck Foundation
- copy number variant;
- brain malformation;
During the past years, significant advances have been made in our understanding of the development of the human brain, and much of this knowledge comes from genetic studies of disorders associated with abnormal brain development. We employed array-comparative genomic hybridization (CGH) to investigate copy number variants (CNVs) in a cohort of 169 patients with various structural brain malformations including lissencephaly, polymicrogyria, focal cortical dysplasia, and corpus callosum agenesis. The majority of the patients had intellectual disabilities (ID) and suffered from symptomatic epilepsy. We detected at least one rare CNV in 38 patients (22.5%). All genes located within the rare CNVs were subjected to enrichment analysis for specific Gene Ontology Terms or Kyoto Encyclopedia of Genes and Genomes pathways and to protein–protein network analysis. Based on these analyses, we propose that genes involved in “axonal transport,” “cation transmembrane transporter activity,” and the “c-Jun N-terminal kinase (JNK) cascade” play a significant role in the etiology of brain malformations. This is to the best of our knowledge the first systematic study of CNVs in patients with structural brain malformations and our data show that CNVs play an important role in the etiology of these malformations, either as direct causes or as genetic risk factors. 32:1427–1435, 2011. ©2011 Wiley Periodicals, Inc.