Patents by Inventor Graham P. Lidgard

Graham P. Lidgard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12325878
    Abstract: Provided herein is technology for breast cancer screening and particularly, but not exclusively, to methods, compositions, and related uses for detecting the presence of breast cancer.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: June 10, 2025
    Assignees: Mayo Foundation for Medical Education and Research, Exact Sciences Corporation
    Inventors: David A. Ahlquist, William R. Taylor, Douglas W. Mahoney, Tracy C. Yab, John B. Kisiel, Hatim T. Allawi, Graham P. Lidgard, Michael W. Kaiser
  • Patent number: 12297510
    Abstract: A method for detecting a methylated genomic locus is provided. In certain embodiments, the method comprises: a) treating a nucleic acid sample that contains both unmethylated and methylated copies of a genomic locus with an agent that modifies cytosine to uracil to produce a treated nucleic acid; b) amplifying a product from the treated nucleic acid using a first primer and a second primer, wherein the first primer hybridizes to a site in the locus that contain methylcytosines and the amplifying preferentially amplifies the methylated copies of the genomic locus, to produce an amplified sample; and c) detecting the presence of amplified methylated copies of the genomic locus in the amplified sample using a flap assay that employs an invasive oligonucleotide having a 3? terminal G or C nucleotide that corresponds to a site of methylation in the genomic locus.
    Type: Grant
    Filed: May 12, 2023
    Date of Patent: May 13, 2025
    Assignee: Exact Sciences Corporation
    Inventors: Graham P. Lidgard, Michael J. Domanico, Hatim Allawi, Hongzhi Zou
  • Publication number: 20250146062
    Abstract: Provided herein is technology relating to the amplification-based detection of bisulfite-treated DNAs and particularly, but not exclusively, to methods and compositions for multiplex amplification of low-level sample DNA prior to further characterization of the sample DNA. The technology further provides methods for isolating DNA from blood or blood product samples, e.g., plasma samples.
    Type: Application
    Filed: November 12, 2024
    Publication date: May 8, 2025
    Inventors: Hatim T. Allawi, William G. Weisburg, Graham P. Lidgard, Michael W. Kaiser, Abram M. Vaccaro, Gracie Shea
  • Publication number: 20250084455
    Abstract: Provided herein is technology relating to the amplification-based detection of bisulfite-treated DNAs and particularly, but not exclusively, to methods and compositions for multiplex amplification of low-level sample DNA prior to further characterization of the sample DNA. The technology further provides methods for isolating DNA from blood or blood product samples, e.g., plasma samples.
    Type: Application
    Filed: June 3, 2024
    Publication date: March 13, 2025
    Inventors: Graham P. Lidgard, Hatim T. Allawi
  • Publication number: 20250066858
    Abstract: Provided herein is technology for lung neoplasia screening and particularly, but not exclusively, to methods, compositions, and related uses for detecting the presence of lung cancer.
    Type: Application
    Filed: August 14, 2024
    Publication date: February 27, 2025
    Inventors: Hatim Allawi, Graham P. Lidgard, Chateen Krueger, Michael W. Kaiser, Tamara J. Sander
  • Publication number: 20250027163
    Abstract: Provided herein is technology relating compositions and methods for detecting tissue cell-specific DNA, such as epithelial cell-specific DNA, in blood or blood products from a subject. The technology also relates to use of tissue cell-specific DNAs as internal controls for methylation assays.
    Type: Application
    Filed: July 17, 2023
    Publication date: January 23, 2025
    Inventors: Hatim T. Allawi, Graham P. Lidgard
  • Publication number: 20250027158
    Abstract: Provided herein is technology for neoplasia screening, and particularly, but not exclusively, to methods, compositions, and related uses for detecting the presence of cancer, in particular, colorectal cancer.
    Type: Application
    Filed: June 17, 2024
    Publication date: January 23, 2025
    Inventors: Hatim T. Allawi, Michael W. Kaiser, Graham P. Lidgard, William R. Taylor, Tamara J. Sander, Abram M. Vaccaro
  • Patent number: 12173362
    Abstract: Provided herein is technology relating to the amplification-based detection of bisulfite-treated DNAs and particularly, but not exclusively, to methods and compositions for multiplex amplification of low-level sample DNA prior to further characterization of the sample DNA. The technology further provides methods for isolating DNA from blood or blood product samples, e.g., plasma samples.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: December 24, 2024
    Assignee: Exact Sciences Corporation
    Inventors: Hatim T. Allawi, William G. Weisburg, Graham P. Lidgard, Michael W. Kaiser, Abram M. Vaccaro, Gracie Shea
  • Publication number: 20240417810
    Abstract: Provided herein is reagent mixture comprising multiplexed amplification reagents and flap assay reagents for detecting, in a single reaction, mutant copies of the KRAS gene that contain any of the 34A, 34C, 34T, 35A, 35C, 35T or 38A point mutations. Methods that employ the reagent mix and kits for performing the same are also provided.
    Type: Application
    Filed: June 28, 2024
    Publication date: December 19, 2024
    Inventors: Rebecca Oldham-Haltom, Hatim T. Allawi, Hongzhi Zou, Michael J. Domanico, Graham P. Lidgard
  • Publication number: 20240407766
    Abstract: Provided herein is technology relating to collecting and preparing samples. For example, the technology relates particularly, but not exclusively, to devices, systems, and kits that allow a subject to collect and prepare a sample for analysis.
    Type: Application
    Filed: May 3, 2024
    Publication date: December 12, 2024
    Inventors: Graham P. Lidgard, Michael J. Domanico, Keith Fourrier, James P. Light, II, Scott Castanon, Keith Kopitzke
  • Publication number: 20240402196
    Abstract: A stool resuspension solution comprising a hemoglobin stabilization reagent is provided. In some embodiments, the hemoglobin stabilization reagent may be an osmolyte, a polyvalent cation, a sugar or polysaccharide and, optionally, a polyvalent cation, a protoporphyrin, or an HRP stabilization component and, optionally, a polyvalent cation. A method of stabilizing hemoglobin in a stool sample in the solution is also provided, as well as a sample collection device containing the solution.
    Type: Application
    Filed: April 23, 2024
    Publication date: December 5, 2024
    Inventors: Keith D. Fourrier, Jacquelyn T. Hennek, Michael J. Domanico, William G. Weisburg, Graham P. Lidgard, Kathleen S. Harings, Daniel J. Simpson
  • Publication number: 20240368702
    Abstract: The present invention relates to methods and compositions for determination of and uses of specific methylation patterns indicative of adenoma and carcinoma. In particular, the invention relates to analysis of defined CpG loci that are coordinately methylated in DNAs from cancer and adenoma samples, methods for identifying coordinately methylated loci, and methods of using analysis of coordinately methylated loci in one or more marker regions in the design of assays for adenoma and cancer.
    Type: Application
    Filed: April 5, 2024
    Publication date: November 7, 2024
    Inventors: David A. Ahlquist, William R. Taylor, Hongzhi Zou, Graham P. Lidgard
  • Publication number: 20240352534
    Abstract: Provided herein is technology relating to detecting neoplasia and particularly, but not exclusively, to methods, compositions, and related uses for detecting premalignant and malignant neoplasms such as colorectal cancer.
    Type: Application
    Filed: April 24, 2024
    Publication date: October 24, 2024
    Inventors: David A. Ahlquist, William R. Taylor, Douglas W. Mahoney, Graham P. Lidgard, Hatim T. Allawi
  • Patent number: 12098431
    Abstract: Provided herein is technology for lung neoplasia screening and particularly, but not exclusively, to methods, compositions, and related uses for detecting the presence of lung cancer.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: September 24, 2024
    Assignee: Exact Sciences Corporation
    Inventors: Hatim Allawi, Graham P. Lidgard, Chateen Krueger, Michael W. Kaiser, Tamara J. Sander
  • Publication number: 20240309426
    Abstract: The present invention provides synthetic DNA strands that find use as process controls in DNA processing and nucleic acid testing methods. In particular, provided herein are synthetic methylated DNA strands of known composition for use as control molecules in DNA testing, e.g., of mutations and/or methylation of DNA isolated from non-fish samples, such as human samples.
    Type: Application
    Filed: February 27, 2024
    Publication date: September 19, 2024
    Inventors: Hatim T. Allawi, Graham P. Lidgard, Brian Aizenstein, Melissa M. Gray
  • Patent number: 12060620
    Abstract: Provided herein is reagent mixture comprising multiplexed amplification reagents and flap assay reagents for detecting, in a single reaction, mutant copies of the KRAS gene that contain any of the 34A, 34C, 34T, 35A, 35C, 35T or 38A point mutations. Methods that employ the reagent mix and kits for performing the same are also provided.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: August 13, 2024
    Assignee: Exact Sciences Corporation
    Inventors: Rebecca Oldham-Haltom, Hatim Allawi, Hongzhi Zou, Michael J. Domanico, Graham P. Lidgard
  • Patent number: 12049671
    Abstract: Provided herein is technology for neoplasia screening, and particularly, but not exclusively, to methods, compositions, and related uses for detecting the presence of cancer, in particular, colorectal cancer.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: July 30, 2024
    Assignees: Exact Sciences Corporation, Mayo Foundation for Medical Education and Research
    Inventors: Hatim T. Allawi, Michael W. Kaiser, Graham P. Lidgard, William R. Taylor, Tamara J. Sander, Abram M. Vaccaro
  • Publication number: 20240191307
    Abstract: A method of sample analysis is provided. In certain embodiments, the method involves: a) amplifying a product from a sample that comprises both wild type copies of a genomic locus and mutant copies of the genomic locus that have a point mutation relative to said wild type copies of the genomic locus, to produce an amplified sample, where: i. the amplifying is done using a first primer and a second primer; and ii. the first primer comprises a 3? terminal nucleotide that base pairs with the point mutation and also comprises a nucleotide sequence that is fully complementary to a sequence in the locus with the exception of a single base mismatch within 6 bases of the 3? terminal nucleotide; and b) detecting the presence of said product in said amplified sample using a flap assay that employs an invasive oligonucleotide. A kit for performing the method is also provided.
    Type: Application
    Filed: November 7, 2023
    Publication date: June 13, 2024
    Inventors: Hongzhi Zou, Graham P. Lidgard, Michael J. Domanico, Hatim T. Allawi
  • Patent number: 12004726
    Abstract: Provided herein is technology relating to collecting and preparing samples. For example, the technology relates particularly, but not exclusively, to devices, systems, and kits that allow a subject to collect and prepare a sample for analysis.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: June 11, 2024
    Assignee: Exact Sciences Corporation
    Inventors: Graham P. Lidgard, Michael J. Domanico, Keith Fourrier, James P. Light, II, Scott Castanon, Keith Kopitzke
  • Publication number: 20240182980
    Abstract: Provided herein is technology relating to detecting neoplasia and particularly, but not exclusively, to methods, compositions, and related uses for detecting premalignant and malignant neoplasms such as pancreatic and colorectal cancer.
    Type: Application
    Filed: October 18, 2023
    Publication date: June 6, 2024
    Inventors: David A. Ahlquist, John B. Kisiel, William R. Taylor, Tracy C. Yab, Douglas W. Mahoney, Graham P. Lidgard, Hatim T. Allawi