A copy number variation morbidity map of developmental delay.

Journal Article

To understand the genetic heterogeneity underlying developmental delay, we compared copy number variants (CNVs) in 15,767 children with intellectual disability and various congenital defects (cases) to CNVs in 8,329 unaffected adult controls. We estimate that ∼14.2% of disease in these children is caused by CNVs >400 kb. We observed a greater enrichment of CNVs in individuals with craniofacial anomalies and cardiovascular defects compared to those with epilepsy or autism. We identified 59 pathogenic CNVs, including 14 new or previously weakly supported candidates, refined the critical interval for several genomic disorders, such as the 17q21.31 microdeletion syndrome, and identified 940 candidate dosage-sensitive genes. We also developed methods to opportunistically discover small, disruptive CNVs within the large and growing diagnostic array datasets. This evolving CNV morbidity map, combined with exome and genome sequencing, will be critical for deciphering the genetic basis of developmental delay, intellectual disability and autism spectrum disorders.

Full Text

Duke Authors

Cited Authors

  • Cooper, GM; Coe, BP; Girirajan, S; Rosenfeld, JA; Vu, TH; Baker, C; Williams, C; Stalker, H; Hamid, R; Hannig, V; Abdel-Hamid, H; Bader, P; McCracken, E; Niyazov, D; Leppig, K; Thiese, H; Hummel, M; Alexander, N; Gorski, J; Kussmann, J; Shashi, V; Johnson, K; Rehder, C; Ballif, BC; Shaffer, LG; Eichler, EE

Published Date

  • August 14, 2011

Published In

Volume / Issue

  • 43 / 9

Start / End Page

  • 838 - 846

PubMed ID

  • 21841781

Pubmed Central ID

  • 21841781

Electronic International Standard Serial Number (EISSN)

  • 1546-1718

Digital Object Identifier (DOI)

  • 10.1038/ng.909


  • eng

Conference Location

  • United States