Journal
JOURNAL OF HUMAN GENETICS
Volume 57, Issue 1, Pages 70-72Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/jhg.2011.128
Keywords
next generation sequencing; mosaic; somatic; PAFAH1B1; neuronal migration
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Funding
- NIHR Biomedical Research Centre Oxford
- Department of Health's NIHR Biomedical Research Centres
- FWF [P21092]
- Wellcome Trust [090532/Z/09/Z, G0900747 91070]
- Austrian Science Fund (FWF) [P21092] Funding Source: Austrian Science Fund (FWF)
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The development of next generation sequencing (NGS) has radically transformed the scientific landscape, making it possible to sequence the exome of any given individual in a cost-effective way. The power of this approach has been demonstrated by a number of groups who have identified pathogenic mutations in small pedigrees that have been resistant to traditional genetic mapping. Recently it has become clear that exome sequencing has great potential with respect to sporadic disease and the identification of de novo mutations. This is highlighted by studies reporting whole-exome sequencing of patient-parental trios affected by learning disability, autism and schizophrenia. It is widely anticipated that the introduction of this technique into a clinical setting will revolutionise genetic diagnosis. However, the sensitivity of NGS exome sequencing is currently unclear. Here, we describe the exome sequencing of DNA samples from a patient with double cortex syndrome and her parents, resulting in the detection of a mosaic splicing mutation in LIS1. This variant was found at an allele frequency of just 18%, demonstrating that NGS methods have the capacity to identify pathogenic mosaic mutations present at a low level. Journal of Human Genetics (2012) 57, 70-72; doi: 10.1038/jhg.2011.128; published online 1 December 2011
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