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Methods and materials for assessing allelic imbalance

  • US 10,626,449 B2
  • Filed: 01/23/2017
  • Issued: 04/21/2020
  • Est. Priority Date: 06/17/2011
  • Status: Active Grant
First Claim
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1. A system for detecting copy number at a plurality of single nucleotide polymorphism loci, comprising:

  • (1) a sample analyzer that is configured(a) to enrich test DNA molecules from a formalin-fixed paraffin-embedded sample, the sample comprising at least one tumor cell obtained from a patient and each test DNA molecule comprising at least one locus from the plurality of single nucleotide polymorphism loci, wherein the plurality of single nucleotide polymorphism loci comprises at least 1,000 single nucleotide polymorphism loci and wherein there is at least one single nucleotide polymorphism locus located on average every 5 Mb within each chromosome; and

    (b) to sequence the test DNA molecules to produce a plurality of quantitative signals representing the alleles for each locus in the plurality of single nucleotide polymorphism loci present in the test DNA molecules; and

    (2) a computer program that is configured to determine, based on the plurality of quantitative signals, the copy number at each locus in the plurality of single nucleotide polymorphism loci.

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