Patents by Inventor Steve S. Sommer

Steve S. Sommer 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).

  • Publication number: 20190010550
    Abstract: The present invention provides a method for detecting transplantation failure of a transplanted organ or cells which comprises detecting a donor-positive but recipient-negative DNA marker in the recipient's plasma using pyrophosphorolysis activated polymerization. Because of the high sensitivity, specificity and selectivity of pyrophosphorolysis activated polymerization, transplantation failure can be detected at early stages and treatment can be initiate earlier.
    Type: Application
    Filed: September 10, 2018
    Publication date: January 10, 2019
    Applicant: CITY OF HOPE
    Inventors: Yun YEN, Qiang LIU, Fouad KANDEEL, Kevin FERRERI, Steve S. SOMMER, Rasha SHEHATTA
  • Patent number: 10072294
    Abstract: The present invention provides a method for detecting transplantation failure of a transplanted organ or cells which comprises detecting a donor-positive but recipient-negative DNA marker in the recipient's plasma using pyrophosphorolysis activated polymerization. Because of the high sensitivity, specificity and selectivity of pyrophosphorolysis activated polymerization, transplantation failure can be detected at early stages and treatment can be initiate earlier.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 11, 2018
    Assignee: CITY OF HOPE
    Inventors: Yun Yen, Qiang Liu, Fouad Kandeel, Kevin Ferreri, Steve S. Sommer, Rasha Shehatta
  • Publication number: 20150126373
    Abstract: The present invention provides a method for detecting transplantation failure of a transplanted organ or cells which comprises detecting a donor-positive but recipient-negative DNA marker in the recipient's plasma using pyrophosphorolysis activated polymerization. Because of the high sensitivity, specificity and selectivity of pyrophosphorolysis activated polymerization, transplantation failure can be detected at early stages and treatment can be initiate earlier.
    Type: Application
    Filed: February 16, 2012
    Publication date: May 7, 2015
    Applicant: CITY OF HOPE
    Inventors: Yun Yen, Qiang Liu, Fouad Kandeel, Kevin Ferreri, Steve S. Sommer, Rasha Shehatta
  • Patent number: 8252534
    Abstract: A method of diagnosing, assessing susceptibility, and/or treating schizophrenia involving the identification and/or observation of microRNAs (miRNA) and variant miRNA are provided. Micro RNAs alleles associated with schizophrenia and schizophrenia spectrum disorders were identified and ultra-rare variants in the precursor or mature miRNA were identified. Functional analyses of ectopically expressed copies of the variant miRNA precursors demonstrate loss of function, gain of function and altered expression levels. The present invention also provides methods for selecting a preferred therapy for a particular subject or group of subjects or individuals at risk for or suffering from schizophrenia or psychosis by use of miRNAs.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: August 28, 2012
    Assignee: City of Hope
    Inventors: Steve S. Sommer, John J. Rossi
  • Patent number: 8173371
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: May 8, 2012
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Publication number: 20110124051
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 26, 2011
    Applicant: CITY OF HOPE
    Inventors: Qiang LIU, Steve S. SOMMER
  • Patent number: 7919253
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: April 5, 2011
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Patent number: 7914995
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: March 29, 2011
    Assignee: City Of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Patent number: 7871820
    Abstract: The three ?-neurexins have similar roles in synaptogenesis and interact with the neuroligins. Mutations located within the gene encoding neurexin 1 have been identified as molecular markers associated with autism and autism-related disorders. The estimated attributable risk is 2%. The invention provides methods of diagnosing or predicting susceptibility to developing autism in an individual by determining the presence or absence of one or more genetic variant of a neurexin 1 gene in an individual.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: January 18, 2011
    Assignee: City of Hope
    Inventors: Steve S. Sommer, Jinong Feng, Jin Yan
  • Publication number: 20100129871
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 27, 2010
    Applicant: CITY OF HOPE
    Inventors: Qiang LIU, Steve S. SOMMER
  • Publication number: 20100009367
    Abstract: A method of diagnosing, assessing susceptibility, and/or treating schizophrenia involving the identification and/or observation of microRNAs (miRNA) and variant miRNA are provided. Micro RNAs alleles associated with schizophrenia and schizophrenia spectrum disorders were identified and ultra-rare variants in the precursor or mature miRNA were identified. Functional analyses of ectopically expressed copies of the variant miRNA precursors demonstrate loss of function, gain of function and altered expression levels. The present invention also provides methods for selecting a preferred therapy for a particular subject or group of subjects or individuals at risk for or suffering from schizophrenia or psychosis by use of miRNAs.
    Type: Application
    Filed: June 12, 2009
    Publication date: January 14, 2010
    Inventors: Steve S. Sommer, John J. Rossi
  • Publication number: 20090239283
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 24, 2009
    Applicant: CITY OF HOPE
    Inventors: Qiang LIU, Steve S. SOMMER
  • Publication number: 20090197253
    Abstract: The three ?-neurexins have similar roles in synaptogenesis and interact with the neuroligins. Mutations located within the gene encoding neurexin 1 have been identified as molecular markers associated with autism and autism-related disorders. The estimated attributable risk is 2%. The invention provides methods of diagnosing or predicting susceptibility to developing autism in an individual by determining the presence or absence of one or more genetic variant of a neurexin 1 gene in an individual.
    Type: Application
    Filed: September 21, 2007
    Publication date: August 6, 2009
    Inventors: Steve S. Sommer, Jinong Feng, Jin Yan
  • Publication number: 20090087839
    Abstract: Methods are presented for determining the presence of an inversion in the factor VIII gene which cause hemophilia A. The methods encompass long distance, multiplex PCR (including overlapping PCR). The use of deaza-dGTP, high levels of DNA polymerases and high levels of DMSO aid in successfully performing the PCR. The use of a novel technique called subcycling PCR can also be applied as part of the methods. The technique allows for the determination of whether a person is homozygous or hemizygous for the inversion and has hemophilia A or whether a person is heterozygous for the inversion and is a carrier. The technique of long distance, multiplex PCR including use of deaza-dGTP, high levels of DNA polymerases and high levels of DMSO are applicable to the determination of the presence of other gross chromosomal aberrations such as deletions/inversions, translocations and inversions.
    Type: Application
    Filed: July 16, 2007
    Publication date: April 2, 2009
    Applicant: City of Hope
    Inventors: Qiang LIU, Steve S. Sommer
  • Patent number: 7504221
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: March 17, 2009
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Patent number: 7449561
    Abstract: The present invention relates generally to the field of human genetics. Specifically, the present invention relates to methods and materials used to detect a human sporadic DCM predisposing gene, specifically the dystrophin gene, some mutant alleles of which cause susceptibility to sporadic DCM. More specifically, the invention relates to germline mutations in the dystrophin gene and their use in the diagnosis of predisposition to sporadic DCM. The invention also relates to the prophylaxis and/or therapy of sporadic DCM associated with a mutation in the dystrophin gene. The invention further relates to the screening of drugs for sporadic DCM therapy. Finally, the invention relates to the screening of the dystrophin gene for mutations/alterations, which are useful for diagnosing the predisposition to sporadic DCM.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: November 11, 2008
    Assignees: City of Hope, Baylor College of Medicine
    Inventors: Steve S. Sommer, Jinong Feng, Carolyn Buzin, Jin Yan, Jeffrey Towbin
  • Patent number: 7238480
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: July 3, 2007
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer, Arthur D. Riggs
  • Patent number: 7141153
    Abstract: pK-matched buffers, each containing two effective buffering components: one weak base and one weak acid which have similar pKa at 25° C. (within 0.3 pK units). On agarose gels, the buffers in various concentrations were tested for separation of double-stranded DNA fragments with various DNA markers, agarose gel concentrations, and field strengths. Mobility was inversely proportional to the logarithm of molecular weight. The buffers provided high resolution without smearing at more dilute concentration than is possible with standard TAE (Tris/Acetate, pH 8.0) or TBE (Tris/Borate, pH 8.3) buffers. The buffers were also tested in 7M urea denaturing LongRanger™ sequencing gels and in non-denaturing polyacrylamide SSCP gels. The pK-matched buffers provide good separation and high resolution, at a broad range of potential pH values.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: November 28, 2006
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Patent number: 7105298
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendable 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or near its 3? terminus for the wild type allele. PAP is inhibited by a mismatch in the 3? specific subsequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild type allele.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 12, 2006
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer
  • Patent number: 7033763
    Abstract: A novel method of pyrophosphorolysis activated polymerization (PAP) has been developed. In PAP, pyrophosphorolysis and polymerization by DNA polymerase are coupled serially for each amplification by using an activatable oligonucleotide P* that has a non-extendible 3?-deoxynucleotide at its 3? terminus. PAP can be applied for exponential amplification or for linear amplification. PAP can be applied to amplification of a rare allele in admixture with one or more wild-type alleles by using an activatable oligonucleotide P* that is an exact match at its 3? end for the rare allele but has a mismatch at or rear its 3? terminus for the wild-type allele. PAP is inhibited by a mismatch in the 3? specific sequence as far as 16 nucleotides away from the 3? terminus. PAP can greatly increase the specificity of detection of an extremely rare mutant allele in the presence of the wild-type allele.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: April 25, 2006
    Assignee: City of Hope
    Inventors: Qiang Liu, Steve S. Sommer, Arthur D. Riggs