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).
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Publication number: 20190010550Abstract: 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: ApplicationFiled: September 10, 2018Publication date: January 10, 2019Applicant: CITY OF HOPEInventors: Yun YEN, Qiang LIU, Fouad KANDEEL, Kevin FERRERI, Steve S. SOMMER, Rasha SHEHATTA
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Patent number: 10072294Abstract: 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: GrantFiled: February 16, 2012Date of Patent: September 11, 2018Assignee: CITY OF HOPEInventors: Yun Yen, Qiang Liu, Fouad Kandeel, Kevin Ferreri, Steve S. Sommer, Rasha Shehatta
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Publication number: 20150126373Abstract: 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: ApplicationFiled: February 16, 2012Publication date: May 7, 2015Applicant: CITY OF HOPEInventors: Yun Yen, Qiang Liu, Fouad Kandeel, Kevin Ferreri, Steve S. Sommer, Rasha Shehatta
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Patent number: 8252534Abstract: 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: GrantFiled: June 12, 2009Date of Patent: August 28, 2012Assignee: City of HopeInventors: Steve S. Sommer, John J. Rossi
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Patent number: 8173371Abstract: 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: GrantFiled: November 30, 2010Date of Patent: May 8, 2012Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer
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Publication number: 20110124051Abstract: 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: ApplicationFiled: November 30, 2010Publication date: May 26, 2011Applicant: CITY OF HOPEInventors: Qiang LIU, Steve S. SOMMER
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Patent number: 7919253Abstract: 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: GrantFiled: November 4, 2009Date of Patent: April 5, 2011Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer
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Patent number: 7914995Abstract: 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: GrantFiled: March 11, 2009Date of Patent: March 29, 2011Assignee: City Of HopeInventors: Qiang Liu, Steve S. Sommer
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Patent number: 7871820Abstract: 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: GrantFiled: September 21, 2007Date of Patent: January 18, 2011Assignee: City of HopeInventors: Steve S. Sommer, Jinong Feng, Jin Yan
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Publication number: 20100129871Abstract: 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: ApplicationFiled: November 4, 2009Publication date: May 27, 2010Applicant: CITY OF HOPEInventors: Qiang LIU, Steve S. SOMMER
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Publication number: 20100009367Abstract: 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: ApplicationFiled: June 12, 2009Publication date: January 14, 2010Inventors: Steve S. Sommer, John J. Rossi
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Publication number: 20090239283Abstract: 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: ApplicationFiled: March 11, 2009Publication date: September 24, 2009Applicant: CITY OF HOPEInventors: Qiang LIU, Steve S. SOMMER
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Publication number: 20090197253Abstract: 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: ApplicationFiled: September 21, 2007Publication date: August 6, 2009Inventors: Steve S. Sommer, Jinong Feng, Jin Yan
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Publication number: 20090087839Abstract: 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: ApplicationFiled: July 16, 2007Publication date: April 2, 2009Applicant: City of HopeInventors: Qiang LIU, Steve S. Sommer
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Patent number: 7504221Abstract: 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: GrantFiled: July 2, 2007Date of Patent: March 17, 2009Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer
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Patent number: 7449561Abstract: 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: GrantFiled: February 24, 2003Date of Patent: November 11, 2008Assignees: City of Hope, Baylor College of MedicineInventors: Steve S. Sommer, Jinong Feng, Carolyn Buzin, Jin Yan, Jeffrey Towbin
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Patent number: 7238480Abstract: 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: GrantFiled: March 12, 2004Date of Patent: July 3, 2007Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer, Arthur D. Riggs
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Patent number: 7141153Abstract: 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: GrantFiled: May 20, 2003Date of Patent: November 28, 2006Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer
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Patent number: 7105298Abstract: 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: GrantFiled: October 15, 2002Date of Patent: September 12, 2006Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer
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Patent number: 7033763Abstract: 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: GrantFiled: May 9, 2003Date of Patent: April 25, 2006Assignee: City of HopeInventors: Qiang Liu, Steve S. Sommer, Arthur D. Riggs