Patents by Inventor David Krizman

David Krizman 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: 10577641
    Abstract: This disclosure provides ten (10) specific peptides, and particular peptide characteristics, from the cell membrane-bound Her2 protein and a diagnostic assay useful for determining the presence and amount of full length and truncated versions of the full-length Her2 protein in cells derived from formalin fixed paraffin embedded tissue.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: March 3, 2020
    Assignee: EXPRESSION PATHOLOGY, INC.
    Inventor: David Krizman
  • Patent number: 10302656
    Abstract: Specific peptides are provided, and derived ionization characteristics of those peptides, from the Hepatocyte Growth Factor Receptor (cMET) protein. The peptides are particularly and surprisingly advantageous for quantifying by the method of Selected Reaction Monitoring (SRM) mass spectrometry the cMET protein directly in biological samples that have been fixed in formalin, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including: formalin-fixed tissue/cells; formalin-fixed/paraffin embedded (FFPE) tissue/cells; FFPE tissue blocks and cells from those blocks; and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 28, 2019
    Assignee: Expression Pathology, Inc.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil
  • Patent number: 10215761
    Abstract: Specific peptides, and derived ionization characteristics of those peptides, from the Bcl-2-like protein 11 (BIM) are provided that are particularly advantageous for quantifying the BIM protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM). Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: February 26, 2019
    Assignee: Expression Pathology, Inc.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil, Wei-Li Liao
  • Patent number: 10054592
    Abstract: The current disclosure provides for specific peptides from the Insulin Receptor Substrate 1 (IRS1) protein and the derived ionization characteristics of those peptides that are advantageous for quantifying the IRS1 directly in formalin fixed biological samples by the method of Selected Reaction Monitoring (SRM) mass spectrometry. Such fixed biological samples include: formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and formalin fixed and paraffin embedded tissue culture cells. IRS1 protein is quantitated in biological samples by the method of SRM/MRM mass spectrometry by quantitating one or more of the peptides described herein. The peptides can be quantitated if they reside in a modified or an unmodified form. Examples of potentially modified forms of an IRS1 peptides include those bearing phosphorylation of a tyrosine, threonine, serine, and/or other amino acid residues within the peptide sequence.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: August 21, 2018
    Assignee: Expression Pathology, Inc.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil
  • Publication number: 20180187239
    Abstract: This disclosure provides ten (10) specific peptides, and particular peptide characteristics, from the cell membrane-bound Her2 protein and a diagnostic assay useful for determining the presence and amount of full length and truncated versions of the full-length Her2 protein in cells derived from formalin fixed paraffin embedded tissue.
    Type: Application
    Filed: September 18, 2017
    Publication date: July 5, 2018
    Inventor: David KRIZMAN
  • Publication number: 20180172690
    Abstract: Methods are provided for determining the diagnosis of whether a liver mass is a benign hepatocellular adenoma or a pre-malignant hepatocellular dysplastic nodule and/or a malignant hepatocellular carcinoma. Specific protein fragment peptides are precisely detected and quantitated by SRM-mass spectrometry directly in liver mass cells collected from liver mass tissue that was obtained from a patient suffering from the liver mass and compared to reference levels in order to determine if the liver mass is a benign growth or a pre-cancer and/or cancer.
    Type: Application
    Filed: April 20, 2017
    Publication date: June 21, 2018
    Inventors: Shahrooz RABIZADEH, Todd HEMBROUGH, Fabiola CECCHI, Christina YAU, David KRIZMAN, Wei-Li Liao, Sheeno Thyparambil
  • Publication number: 20180112277
    Abstract: A novel signal directed tissue microdissection method is provided that forms the foundation for an entire multistep panomic (proteomic/genomic) process to inform and ascertain an optimal individualized cancer treatment strategy. Patient tumor tissue is sectioned onto DIRECTOR slides and tumor cells are identified by an inclusion signal while unwanted cells such as normal stroma are identified by an exclusion signal, and whereby such signals are determined by a clinically-trained histologist/pathologist, the presence or absence of immunohistochemical staining, or a combination of both. A liquefied biochemical lysate is prepared from the tumor cells whereby genomics and proteomics assays are performed to inform optimal cancer treatment strategies for the patient that includes chemotherapy agents, targeted therapeutic agents, cancer vaccines, and immunomodulatory agents individually or in combination.
    Type: Application
    Filed: October 26, 2017
    Publication date: April 26, 2018
    Inventor: David KRIZMAN
  • Patent number: 9869680
    Abstract: The current disclosure provides for specific peptides, and derived ionization characteristics of the peptides, from the Receptor Tyrosine-Protein Kinase erbB-3, or Her3 , that are particularly advantageous for quantifying the Her3 protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed wherein said biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: January 16, 2018
    Assignee: Expression Pathology, Inc.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil
  • Patent number: 9804169
    Abstract: Specific peptides, and derived ionization characteristics of those peptides from Death Receptor 5 (DR5) protein are provided that are particularly advantageous for quantifying the DR5 protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring/Multiple Reaction Monitoring (SRM/MRM) mass spectrometry. Such biological samples are chemically preserved and fixed wherein the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 31, 2017
    Assignee: Expression Pathology, Inc.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil, Wei-Li Liao
  • Patent number: 9765380
    Abstract: This disclosure provides ten (10) specific peptides, and particular peptide characteristics, from the cell membrane-bound Her2 protein and a diagnostic assay useful for determining the presence and amount of full length and truncated versions of the full-length Her2 protein in cells derived from formalin fixed paraffin embedded tissue.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: September 19, 2017
    Assignee: Expression Pathology, Inc.
    Inventor: David Krizman
  • Publication number: 20170168055
    Abstract: Methods are provided for quantifying specific proteins directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed and can be tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded. A designated protein is quantitated in the sample by the method of SRM/MRM mass spectrometry by quantitating in the protein sample at least one or more of the peptides described. The proteins that can be detected and/or quantitated are TLE3, XRCC1, E-cadherin, PTEN, Vimentin, HGF, MRP1, RFC1, SYP, IDO1, and DHFR.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 15, 2017
    Inventors: David Krizman, Todd Hembrough, Wei-Li Liao, Eunkyung An, Sheeno Thyparambil, Adele Blackler
  • Publication number: 20170052196
    Abstract: Peptides from the tyrosine-protein kinase receptor UFO protein (AXL) are provided that are particularly advantageous for quantifying the AXL protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM)/Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed and include formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks. A protein digest is prepared from the biological sample and the AXL protein is quantitated in the Liquid Tissue sample by the method of SRM/MRM mass spectrometry by quantitating in the protein sample at least one or more of the peptides described.
    Type: Application
    Filed: April 30, 2015
    Publication date: February 23, 2017
    Applicant: Expression Pathlogy, Inc.
    Inventors: David KRIZMAN, Todd HEMBROUGH, Adele BLACKLER, Wei-Li LIAO
  • Patent number: 9551719
    Abstract: Specific peptides, and derived ionization characteristics of those peptides, from the Bcl-2-like protein 11 (BIM) are provided that are particularly advantageous for quantifying the BIM protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM). Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: January 24, 2017
    Assignee: EXPRESSION PATHOLOGY, INC.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil, Wei-Li Liao
  • Publication number: 20160377633
    Abstract: Specific peptides, and derived ionization characteristics of those peptides, from the Bcl-2-like protein 11 (BIM) are provided that are particularly advantageous for quantifying the BIM protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM). Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Application
    Filed: September 12, 2016
    Publication date: December 29, 2016
    Inventors: David KRIZMAN, Todd HEMBROUGH, Sheeno THYPARAMBIL, Wei-Li LIAO
  • Publication number: 20160349265
    Abstract: The current disclosure provides for specific peptides from the Insulin Receptor Substrate 1 (IRS1) protein and the derived ionization characteristics of those peptides that are particularly advantageous for quantifying the IRS1 directly in formalin fixed biological samples by the method of Selected Reaction Monitoring (SRM) mass spectrometry. Such fixed biological samples include: formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and formalin fixed and paraffin embedded tissue culture cells. IRS1 protein is quantitated in biological samples by the method of SRM/MRM mass spectrometry by quantitating one or more of the peptides described herein. The peptides can be quantitated if they reside in a modified or an unmodified form. Examples of potentially modified forms of an IRS1 peptides include those bearing phosphorylation of a tyrosine, threonine, serine, and/or other amino acid residues within the peptide sequence.
    Type: Application
    Filed: August 15, 2016
    Publication date: December 1, 2016
    Inventors: David KRIZMAN, Todd HEMBROUGH, Sheeno THYPARAMBIL
  • Publication number: 20160313344
    Abstract: Specific peptides, and derived ionization characteristics of those peptides from Death Receptor 5 (DRS) protein are provided that are particularly advantageous for quantifying the DRS protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring/Multiple Reaction Monitoring (SRM/MRM) mass spectrometry. Such biological samples are chemically preserved and fixed wherein the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Application
    Filed: July 15, 2016
    Publication date: October 27, 2016
    Inventors: David KRIZMAN, Todd HEMBROUGH, Sheeno THYPARAMBIL, Wei-Li LIAO
  • Publication number: 20160252525
    Abstract: Specific peptides are provided, and derived ionization characteristics of those peptides, from the Hepatocyte Growth Factor Receptor (cMET) protein. The peptides are particularly and surprisingly advantageous for quantifying by the method of Selected Reaction Monitoring (SRM) mass spectrometry the cMET protein directly in biological samples that have been fixed in formalin, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including: formalin-fixed tissue/cells; formalin-fixed/paraffin embedded (FFPE) tissue/cells; FFPE tissue blocks and cells from those blocks; and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 1, 2016
    Inventors: David KRIZMAN, Todd HEMBROUGH, Sheeno THYPARAMBIL
  • Patent number: 9372195
    Abstract: Specific peptides are provided, and derived ionization characteristics of those peptides, from the Hepatocyte Growth Factor Receptor (cMET) protein. The peptides are particularly and surprisingly advantageous for quantifying by the method of Selected Reaction Monitoring (SRM) mass spectrometry the cMET protein directly in biological samples that have been fixed in formalin, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed where the biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including: formalin-fixed tissue/cells; formalin-fixed/paraffin embedded (FFPE) tissue/cells; FFPE tissue blocks and cells from those blocks; and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 21, 2016
    Assignee: EXPRESSION PATHOLOGY, INC.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil
  • Publication number: 20150369818
    Abstract: The current disclosure provides for specific peptides, and derived ionization characteristics of the peptides, from the Receptor Tyrosine-Protein Kinase erbB-3, or Her3, that are particularly advantageous for quantifying the Her3 protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed wherein said biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Application
    Filed: September 8, 2015
    Publication date: December 24, 2015
    Applicant: Expression Pathology, Inc.
    Inventors: David KRIZMAN, Todd Hembrough, Sheeno Thyparambil
  • Patent number: 9128102
    Abstract: The current disclosure provides for specific peptides, and derived ionization characteristics of the peptides, from the Receptor Tyrosine-Protein Kinase erbB-3, or Her3, that are particularly advantageous for quantifying the Her3 protein directly in biological samples that have been fixed in formalin by the method of Selected Reaction Monitoring (SRM) mass spectrometry, or what can also be termed as Multiple Reaction Monitoring (MRM) mass spectrometry. Such biological samples are chemically preserved and fixed wherein said biological sample is selected from tissues and cells treated with formaldehyde containing agents/fixatives including formalin-fixed tissue/cells, formalin-fixed/paraffin embedded (FFPE) tissue/cells, FFPE tissue blocks and cells from those blocks, and tissue culture cells that have been formalin fixed and or paraffin embedded.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 8, 2015
    Assignee: EXPRESSION PATHOLOGY, INC.
    Inventors: David Krizman, Todd Hembrough, Sheeno Thyparambil