Patents by Inventor Alexander Lovejoy

Alexander Lovejoy 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: 11913062
    Abstract: Present disclosure provides a method including isolating DNA from a source, thereby providing a composition including the isolated DNA. The isolated DNA has at least first and second target regions, where the length of the second target region is greater than the length of the first target region. The method further includes quantifying a total mass of the isolated DNA, quantifying a first quantification cycle (Cq) of the first target region and a second Cq of the second target region, and calculating a Q-ratio for the isolated DNA by dividing the second Cq by the first Cq. The method further includes determining a value for a quality-mass constant (kQm), estimating a required input mass by dividing kQm by the Q-ratio, and preparing the isolated DNA for sequencing if the total mass of the isolated DNA in the composition is equal or greater than the required input mass.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: February 27, 2024
    Assignees: Roche Sequencing Solutions, Inc., Signature Diagnostics GmbH
    Inventors: Victoria Constandse, Daniel Klass, Alexander Lovejoy, Melissa Loyzer, Bronwen Miller, Bernd Hinzmann, Sophie Beckert
  • Patent number: 11773388
    Abstract: The present disclosure provides a method for enrichment of at least one target nucleic acid in a library of nucleic acids. A first oligonucleotide is hybridized to a target nucleic acid in library of nucleic acids having first and second adapters. The hybridized first oligonucleotide is extended with a first polymerase, thereby producing a first primer extension complex including the target nucleic acid and the extended first oligonucleotide. The first primer extension complex is captured, enriched relative to the library of nucleic acids, and a second oligonucleotide is hybridized to the target nucleic acid. The hybridized second oligonucleotide is extended with a second polymerase, thereby producing a second primer extension complex including the target nucleic acid and the extended second oligonucleotide, and further liberating the extended first oligonucleotide from the first primer extension complex.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: October 3, 2023
    Assignees: Roche Sequencing Solutions, Inc., Kapa Biosystems, Inc.
    Inventors: Daniel Burgess, Brian Christopher Godwin, Alexander Lovejoy, Bronwen Miller, Jo-Anne Elizabeth Penkler, Joseph Platzer
  • Publication number: 20230287508
    Abstract: Disclosed are compositions, kits, and methods for detecting gene fusions involving an unknown fusion partner using locked nucleic acid primers. In some embodiments, the compositions include a compound including at least two nucleotide sequences which are joined, directly or indirectly, through a 5? to 5? linkage. In some embodiments, the compound further includes a spacer moiety and/or a cleavage moiety.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 14, 2023
    Inventors: Alexander Lovejoy, Melissa Loyzer
  • Publication number: 20230183789
    Abstract: Disclosed are methods and compositions for detecting structural rearrangements in a genome using rearrangement-specific enrichment probes or rearrangement- specific amplification primers.
    Type: Application
    Filed: April 1, 2021
    Publication date: June 15, 2023
    Inventors: Daniel Klass, Alexander Lovejoy
  • Publication number: 20230081899
    Abstract: The present disclosure provides a kit for preparing a library of nucleic acids. The kit includes first and second oligonucleotide, each having a tail sequence, a common sequence, and at least one of a unique identifier sequence, and a variable length punctuation mark. The kit further includes a first primer having a first sample identifier sequence and a first priming sequence at a 3? end of the first primer. The first priming sequence includes the tail sequence of the first oligonucleotide. The kit further includes a second primer having a second sample identifier sequence and a second priming sequence at a 3? end of the second primer. The second priming sequence is complimentary to the second tail sequence of the second oligonucleotide.
    Type: Application
    Filed: November 3, 2022
    Publication date: March 16, 2023
    Inventors: Daniel Klass, Alexander Lovejoy, Seyed Hamid Mirebrahim, Amrita Pati
  • Publication number: 20230083203
    Abstract: The invention is a method of predicting response to therapy in a colorectal cancer patient, the method comprising analysis of circulating tumor DNA from a patient's sample.
    Type: Application
    Filed: October 14, 2022
    Publication date: March 16, 2023
    Inventors: John Lee, Alexander Lovejoy, John Palma, Ulrich-Peter Rohr, Lijing Yao, Stephanie Yaung
  • Patent number: 11519037
    Abstract: The invention is a method of predicting response to therapy in a colorectal cancer patient, the method comprising analysis of circulating tumor DNA from a patient's sample.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 6, 2022
    Assignee: ROCHE SEQUENCING SOLUTIONS, INC.
    Inventors: John Lee, Alexander Lovejoy, John Palma, Ulrich-Peter Rohr, Lijing Yao, Stephanie Yaung
  • Publication number: 20220259667
    Abstract: The present invention relates generally to classification of biological samples, and more specifically to cell of original classification. In particular, some embodiments of the invention relate to diffuse large B cell lymphoma cell of origin classification using machine learning models. The machine learning models can be based on decision trees such as a random forest algorithm or a gradient boosted decision tree. Features for the models can be determined through analysis of variant data from plasma or blood samples from a plurality of subjects with the disease.
    Type: Application
    Filed: July 20, 2020
    Publication date: August 18, 2022
    Inventors: David Kurtz, Hai Lin, Alexander Lovejoy, Khai Luong, Ehsan Tabari
  • Publication number: 20220170094
    Abstract: The present invention is a method and compositions for forming a library for nucleic acids sequencing simultaneously from DNA and RNA present in a sample.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventors: Daniel M. Klass, Alexander Lovejoy, Melissa Loyzer, Kelly M. McClintock
  • Publication number: 20220068434
    Abstract: Techniques for cancer patient management, and more particularly, to techniques for ultrasensitive detection of circulating nucleic acid with prior knowledge of variants to be monitored in the blood. An exemplary technique includes detecting one or more variants in a sample of cell free DNA from a subject. The one or more variants are selected from a plurality of variants known to be specific to a tumor or disease area of the subject. The technique further includes counting the detected one or more variants, determining a tumor burden based on the count of the one or more variants, and determining a statistical significance of the tumor burden based on whether the detection of the one or more variants is associate with true signals or background noise.
    Type: Application
    Filed: June 11, 2021
    Publication date: March 3, 2022
    Inventors: Alexander Lovejoy, Amrita Pati, Daniel Klass, Xiaoju Max Ma, Weibing Shi
  • Publication number: 20210375391
    Abstract: Methods and systems for detecting MSI are provided. Also provided are methods for enriching human genomic DNA for microsatellite loci. Additional, an oligonucleotide array for detecting MSI is provided.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 2, 2021
    Inventors: Fergal Casey, Daniel M. Klass, Alexander Lovejoy, Seyed Hamid Mirebrahim, Amrita Pati, Hao Wang
  • Publication number: 20210310050
    Abstract: Techniques for identification of global cancer-specific sequence features in whole genome sequence data obtained from cell-free DNA (cfDNA) samples. An exemplary technique includes obtaining a plurality of whole genome sequencing reads from a cfDNA sample and determining two or more metrics from at least a majority of the plurality of genome sequencing reads, where a first metric of the two or more metrics is: (i) a fragment size of the cell free DNA, (ii) relative read depth of the plurality of whole genome sequencing reads, or (iii) germline allelic imbalance. The technique further includes inputting the two or more metrics into a classifier to obtain a first prediction for a first class and a second prediction for a second class, and classifying the sample of cell free DNA as the first class or the second class based on the first prediction and the second prediction.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 7, 2021
    Inventors: Mingyang Cai, Fergal Casey, Liang Feng, Alexander Lovejoy
  • Publication number: 20200392483
    Abstract: The present disclosure provides a method for enrichment of at least one target nucleic acid in a library of nucleic acids. A first oligonucleotide is hybridized to a target nucleic acid in library of nucleic acids having first and second adapters. The hybridized first oligonucleotide is extended with a first polymerase, thereby producing a first primer extension complex including the target nucleic acid and the extended first oligonucleotide. The first primer extension complex is captured, enriched relative to the library of nucleic acids, and a second oligonucleotide is hybridized to the target nucleic acid. The hybridized second oligonucleotide is extended with a second polymerase, thereby producing a second primer extension complex including the target nucleic acid and the extended second oligonucleotide, and further liberating the extended first oligonucleotide from the first primer extension complex.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 17, 2020
    Inventors: Daniel Burgess, Brian Christopher Godwin, Alexander Lovejoy, Bronwen Miller, Jo-Anne Elizabeth Penkler, Joseph Platzer
  • Publication number: 20200109397
    Abstract: The present disclosure provides a kit for preparing a library of nucleic acids. The kit includes first and second oligonucleotide, each having a tail sequence, a common sequence, and at least one of a unique identifier sequence, and a variable length punctuation mark. The kit further includes a first primer having a first sample identifier sequence and a first priming sequence at a 3? end of the first primer. The first priming sequence includes the tail sequence of the first oligonucleotide. The kit further includes a second primer having a second sample identifier sequence and a second priming sequence at a 3? end of the second primer. The second priming sequence is complimentary to the second tail sequence of the second oligonucleotide.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 9, 2020
    Inventors: Daniel Klass, Alexander Lovejoy, Seyed Hamid Mirebrahim, Amrita Pati
  • Publication number: 20200087708
    Abstract: Present disclosure provides a method including isolating DNA from a source, thereby providing a composition including the isolated DNA. The isolated DNA has at least first and second target regions, where the length of the second target region is greater than the length of the first target region. The method further includes quantifying a total mass of the isolated DNA, quantifying a first quantification cycle (Cq) of the first target region and a second Cq of the second target region, and calculating a Q-ratio for the isolated DNA by dividing the second Cq by the first Cq. The method further includes determining a value for a quality-mass constant (kQm), estimating a required input mass by dividing kQm by the Q-ratio, and preparing the isolated DNA for sequencing if the total mass of the isolated DNA in the composition is equal or greater than the required input mass.
    Type: Application
    Filed: November 18, 2019
    Publication date: March 19, 2020
    Inventors: Victoria Constandse, Daniel Klass, Alexander Lovejoy, Melissa Loyzer, Bronwen Miller, Bernd Hinzmann, Sophie Beckert
  • Publication number: 20200032244
    Abstract: The present disclosure provides a method for enrichment of at least one target nucleic acid in a library of nucleic acids. A first oligonucleotide is hybridized to a target nucleic acid in library of nucleic acids having first and second adapters. The hybridized first oligonucleotide is extended with a first polymerase, thereby producing a first primer extension complex including the target nucleic acid and the extended first oligonucleotide. The first primer extension complex is captured, enriched relative to the library of nucleic acids, and a second oligonucleotide is hybridized to the target nucleic acid. The hybridized second oligonucleotide is extended with a second polymerase, thereby producing a second primer extension complex including the target nucleic acid and the extended second oligonucleotide, and further liberating the extended first oligonucleotide from the first primer extension complex.
    Type: Application
    Filed: August 15, 2019
    Publication date: January 30, 2020
    Inventors: Daniel Burgess, Brian Christopher Godwin, Alexander Lovejoy, Bronwen Miller, Jo-Anne Elizabeth Penkler, Joseph Platzer, Martin Ranik
  • Publication number: 20170349953
    Abstract: The invention comprises novel methods and compositions for detecting whether a patient will be responsive to ALK inhibitors and methods of treating the patient.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 7, 2017
    Inventors: Alexander Lovejoy, Stephanie Yaung, Aarthi Balasubramanyam, John Palma