Comparative genomic resequencing
AssigneeRoche Nimblegen, Inc.
InventorsRoland D Green, Steve Smith, Thomas Albert, Emile F. Nuwaysir
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Abstract
The present invention is an improved method of resequencing DNA using microarrays to rapidly map and identify SNPs, deletions and amplification events present in the genome of an organism. The method is performed by hybridizing a reference and a test genome to two separate arrays with each array exhibiting a specific intensity pattern. The intensity differences between the reference and the test genome arrays are used to produce a mutation map. The mapped differences are resequenced on a set of resequencing arrays to identify specific genetic mutations.
Claims10
A method for identifying genetic mutations in a test genome of an organism relative to a reference genome of the an organism, the method comprising the steps of:
- a) hybridizing the reference genome and the test genome in separate hybridization reactions to a genomic tiling array that comprises a plurality of probes that tile the reference genome across a plurality of regions having a stagger of more than one nucleotide to produce a reference intensity pattern and a test intensity pattern;
- b) identifying in the plurality of regions a subset of regions of possible genetic mutation in the test genome in which the test intensity pattern differs from the reference intensity pattern;
- and
- c) resequencing the subset of regions of possible genetic mutation in the test genome on a resequencing array.
Dependencies are inferred from the claim text.