High-throughput genotyping of intermediate-size structural variation

Tera L. Newman, Mark J. Rieder, V. Anne Morrison, Andrew J. Sharp, Joshua D. Smith, L. James Sprague, Rajinder Kaul, Christopher S. Carlson, Maynard V. Olson, Deborah A. Nickerson, Evan E. Eichler

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The contribution of large-scale and intermediate-size structural variation (ISV) to human genetic disease and disease susceptibility is only beginning to be understood. The development of high-throughput genotyping technologies is one of the most critical aspects for future studies of linkage disequilibrium (LD) and disease association. Using a simple PCR-based method designed to assay the junctions of the breakpoints, we genotyped seven simple insertion and deletion polymorphisms ranging in size from 6.3 to 24.7 kb among 90 CEPH individuals. We then extended this analysis to a larger collection of samples (n = 460) by application of an oligonucleotide extension-ligation genotyping assay. The analysis showed a high level of concordance (∼99%) when compared with PCR/sequence-validated genotypes. Using the available HapMap data, we observed significant LD (r2 = 0.74-0.95) between each ISV and flanking single nucleotide polymorphisms, but this observation is likely to hold only for similar simple insertion/deletion events. The approach we describe may be used to characterize a large number of individuals in a cost-effective manner once the sequence organization of ISVs is known.

Original languageEnglish
Pages (from-to)1159-1167
Number of pages9
JournalHuman Molecular Genetics
Volume15
Issue number7
DOIs
StatePublished - 1 Apr 2006
Externally publishedYes

Fingerprint

Dive into the research topics of 'High-throughput genotyping of intermediate-size structural variation'. Together they form a unique fingerprint.

Cite this