Patents by Inventor Le-Ann HWANG

Le-Ann HWANG 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: 20230257457
    Abstract: The invention relates to methods for producing an antibody which is specific for a mutant p53 polypeptide over wildtype p53 polypeptide, comprising using as an immunogen a peptide or polypeptide comprising: (i) an antigen sequence, comprising an amino acid sequence of the mutant p53 polypeptide including the mutation and at least one amino acid immediately adjacent to the mutation, and (ii) a scaffold sequence for providing the antigen sequence in a solvent-accessible configuration. Also provided are antibodies produced by such methods, and uses thereof.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 17, 2023
    Inventors: Tr Kanaga Sabapathy, David P. Lane, Le-Ann Hwang, Xin Yu Koh, Liew Oi Wah
  • Patent number: 11613568
    Abstract: The invention relates to methods for producing an antibody which is specific for a mutant p53 polypeptide over wildtype p53 polypeptide, comprising using the mutant p53 polypeptide as an immunogen wherein the polypeptide comprises: (i) an antigen sequence, comprising an amino acid sequence of the mutant p53 polypeptide including the mutation and at least one amino acid immediately adjacent to the mutation, and (ii) a scaffold sequence for providing the antigen sequence in a solvent-accessible configuration, in particular wherein the scaffold sequence is thioredoxin. In the specific embodiments, antibodies against mutant p53 comprising R175H, R248Q or R273H are generated. Also disclosed are the uses of the antibodies for diagnosis, prognosis and stratification of patient groups and further encompasses the use of antibodies for imaging and treatment of cancer.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 28, 2023
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte. Ltd., National University of Singapore
    Inventors: Tr Kanaga Sabapathy, David P. Lane, Le-Ann Hwang, Xin Yu Koh, Liew Oi Wah
  • Patent number: 11225515
    Abstract: Disclosed are monoclonal antibodies that bind specifically to macrophage stimulating protein receptor (or RON—Recepteur d' Origine Nantais). Also provided are the chimeric antigen receptors, bispecific antibodies, bivalent antibodies and biTE thereof, as well as pharmaceutical compositions and uses of said antibodies for the treatment of cancer and fibrosis and an ex vivo method of evaluating the status of a cancer patient using said antibodies. In particular, two monoclonal antibodies, 7G8 and 6D4, demonstrating good therapeutic efficacy in inhibiting tumour growth in human xenograft mice models and sensitivity in human xenograft mouse tumour imaging models are provided.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 18, 2022
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: David Lane, Xin Yu Koh, Le-Ann Hwang
  • Publication number: 20190248879
    Abstract: The invention relates to methods for producing an antibody which is specific for a mutant p53 polypeptide over wildtype p53 polypeptide, comprising using said mutant p53 polypeptide as an immunogen wherein said polypeptide comprises: (i) an antigen sequence, comprising an amino acid sequence of the mutant p53 polypeptide including the mutation and at least one amino acid immediately adjacent to the mutation, and (ii) a scaffold sequence for providing the antigen sequence in a solvent-accessible configuration, in particular wherein the scaffold sequence is thioredoxin. In the specific embodiments, antibodies against mutant p53 comprising R175H, R248Q or R273H are generated. Also disclosed are the uses of said antibodies for diagnosis, prognosis and stratification of patient groups and further encompasses the use of antibodies for imaging and treatment of cancer.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 15, 2019
    Inventors: Tr Kanaga Sabapathy, David P. Lane, Le-Ann Hwang, Xin Yu Koh, Liew Oi Wah
  • Publication number: 20190194309
    Abstract: Disclosed are monoclonal antibodies that bind specifically to macrophage stimulating protein receptor (or RON—Recepteur d' Origine Nantais). Also provided are the chimeric antigen receptors, bispecific antibodies, bivalent antibodies and biTE thereof, as well as pharmaceutical compositions and uses of said antibodies for the treatment of cancer and fibrosis and an ex vivo method of evaluating the status of a cancer patient using said antibodies. In particular, two monoclonal antibodies, 7G8 and 6D4, demonstrating good therapeutic efficacy in inhibiting tumour growth in human xenograft mice models and sensitivity in human xenograft mouse tumour imaging models are provided.
    Type: Application
    Filed: August 28, 2017
    Publication date: June 27, 2019
    Inventors: David LANE, Xin Yu KOH, Le-Ann HWANG