Abstract: The invention relates generally to compositions and methods for purifying the desired species from a mixture of desired heterodimer and contaminating homodimer immunoglobulin variants by modifying the isoelectric point(s) of the individual chains.
Abstract: The present invention relates to immunoglobulins that bind IgE and Fc?RIIb with high affinity, said compositions being capable of inhibiting cells that express membrane-anchored IgE. Such compositions are useful for treating IgE-mediated disorders, including allergies and asthma.
Type:
Grant
Filed:
December 22, 2022
Date of Patent:
February 24, 2026
Assignee:
Xencor, Inc.
Inventors:
John R Desjarlais, Seung Y. Chu, Holly M. Horton, Matthew J. Bernett
Abstract: The present disclosure relates to immunoglobulins that bind Fc?RIIb+ B cells and coengage CD19 on the cell's surface and an Fc?RIIb on the cell's surface, methods for their generation, and methods for using the immunoglobulins for the treatment of an IgG4-related disease.
Type:
Grant
Filed:
May 16, 2022
Date of Patent:
December 30, 2025
Assignee:
Xencor, Inc.
Inventors:
Debra Zack, John H. Stone, Shiv Pillai, Paul Foster
Abstract: The present invention is directed to novel targeted heterodimeric fusion proteins comprising an IL-15/IL-15R? Fc-fusion protein and a LAG-3 antibody fragment-Fc fusion protein.
Type:
Grant
Filed:
April 28, 2023
Date of Patent:
December 30, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew J. Bernett, John Desjarlais, Rumana Rashid, Rajat Varma, Christine Bonzon
Abstract: The present invention relates to immunoglobulins that bind Fc?RIIb+ cells and coengage the antigen on the cell's surface and an Fc?RIIb on the cell's surface, methods for their generation, and methods for using the immunoglobulins.
Type:
Grant
Filed:
August 11, 2022
Date of Patent:
December 16, 2025
Assignee:
Xencor, Inc.
Inventors:
Seung Yup Chu, John R. Desjarlais, Sher Bahadur Karki, Gregory Alan Lazar, Gregory L. Moore, Igor Vostiar
Abstract: The invention relates generally to compositions and methods for purifying the desired species from a mixture of desired heterodimer and contaminating homodimer immunoglobulin variants by modifying the isoelectric point(s) of the individual chains.
Abstract: The present invention is directed to a novel targeted heterodimeric Fc fusion proteins comprising an IL-15/IL-15R? Fc fusion protein and an NKG2D antigen binding domain Fc fusion proteins.
Type:
Grant
Filed:
October 18, 2022
Date of Patent:
October 21, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew J. Bernett, John R. Desjarlais, Rajat Varma, Gregory Moore, Juan Diaz, Alex Nisthal, Ke Liu, Rumana Rashid, Eric Chang
Abstract: In one aspect, the present invention provides heterodimeric antibodies comprising a first monomer comprising a first heavy chain constant domain comprising a first variant Fc domain and a first antigen binding domain and a second monomer comprising a second heavy chain constant domain comprising a second variant Fc domain and a second antigen binding domain. In an additional aspect the heterodimeric antibody comprises a first monomer comprising a heavy chain comprising a first Fc domain and a single chain Fv region (scFv) that binds a first antigen, wherein the scFv comprises a charged scFv linker. The heterodimeric antibody further comprises a second monomer comprising a first heavy chain comprising a second Fc domain and a first variable heavy chain and a first light chain.
Type:
Grant
Filed:
September 7, 2023
Date of Patent:
September 16, 2025
Assignee:
Xencor, Inc.
Inventors:
Gregory Moore, Matthew Bernett, Rumana Rashid, John Desjarlais
Abstract: Provided herein are novel antigen binding domains and antibodies (e.g., heterodimeric antibodies) that bind Prostate Specific Membrane Antigen (PSMA). In exemplary embodiments, the anti-PSMA antibodies also bind CD3. Such antibodies that bind PSMA and CD3 are useful, for example in the treatment of PSMA-related cancer.
Type:
Grant
Filed:
January 17, 2024
Date of Patent:
September 2, 2025
Assignee:
Xencor, Inc.
Inventors:
John R. Desjarlais, Alex Nisthal, Michael Hedvat, Matthew Adam Dragovich
Abstract: Provided herein are novel CLDN6 binding domains, and anti-CLDN6×anti-CD3 antibodies that include such CLDN6 binding domains. Also provided herein are methods of using such antibodies for the treatment of CLDN6-associated cancers.
Type:
Grant
Filed:
August 20, 2024
Date of Patent:
August 26, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew S. Faber, Sung-Hyung Lee, Yoon Kyung Kim, Jing Qi, Kendra N. Avery, Seung Y. Chu, Alex Nisthal, Matthew J. Bernett, John R. Desjarlais, Chad Borchert
Abstract: The present invention provides binding agents comprising at least two binding domains, wherein a first binding domain has specificity for CLDN18.2 and a second binding domain has specificity for CD3, and methods of using these binding agents or nucleic acids encoding therefor for treating cancer.
Type:
Grant
Filed:
July 5, 2023
Date of Patent:
August 5, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew Bernett, Alex Nisthal, Gregory Moore
Abstract: Provided herein are novel anti-CD28×anti-PSMA antibodies and methods of using such antibodies for the treatment of PSMA-associated cancers. Subject anti-CD28×anti-PSMA antibodies are capable of agonistically binding to CD28 costimulatory molecules on T cells and PSMA on tumor cells. Thus, such antibodies selectively enhance anti-tumor activity at tumor sites while minimizing peripheral toxicity. The subject antibodies provided herein are particularly useful in combination with other anti-cancer therapies (e.g., anti-CD3×anti-PSMA antibodies) for the treatment of prostate cancers.
Type:
Grant
Filed:
February 13, 2024
Date of Patent:
August 5, 2025
Assignee:
Xencor, Inc.
Inventors:
John R. Desjarlais, Gregory Moore, Michael Hedvat, Juan Diaz, Veronica Gusti Zeng, Matthew Adam Dragovich, Joseph Erhardt, Theresa McDevitt, Fouad Moussa, Pankaj Seth, Fei Shen, Adam Zwolak
Abstract: Provided herein are novel anti-CD28× anti-PSMA antibodies and methods of using such antibodies for the treatment of PSMA-associated cancers. Subject anti-CD28× anti-PSMA antibodies are capable of agonistically binding to CD28 costimulatory molecules on T cells and PSMA on tumor cells. Thus, such antibodies selectively enhance anti-tumor activity at tumor sites while minimizing peripheral toxicity. The subject antibodies provided herein are particularly useful in combination with other anti-cancer therapies (e.g., anti-CD3× anti-PSMA antibodies) for the treatment of prostate cancers.
Type:
Grant
Filed:
February 22, 2023
Date of Patent:
July 22, 2025
Assignee:
Xencor, Inc.
Inventors:
John R. Desjarlais, Gregory Moore, Michael Hedvat, Juan Diaz, Veronica Gusti Zeng, Matthew Adam Dragovich, Joseph Erhardt, Theresa McDevitt, Fouad Moussa, Pankaj Seth, Fei Shen, Adam Zwolak
Abstract: The present invention is directed to methods for treating a solid cancerous cancer through administering a bispecific anti-PD1 x anti-CTLA4 antibody.
Abstract: The present invention is directed to novel IL-15/IL-15R? heterodimeric Fc fusion proteins and uses thereof. The IL-15/IL-15R? heterodimeric Fc fusion proteins can be administered to a patient to treat cancer. In some cases, the IL-15/IL-15R? heterodimeric Fc fusion protein is administered in combination with a checkpoint blockage antibody such as a PD-1 antibody.
Type:
Grant
Filed:
March 22, 2021
Date of Patent:
March 4, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew Bernett, John Desjarlais, Rumana Rashid, Rajat Varma, Christine Bonzon
Abstract: The present invention provides novel IL-12 Fc fusion proteins, methods of making and using the same. The IL-12 Fc fusion proteins are useful for treatment of cancer and can be used in combination with checkpoint blockade.
Type:
Grant
Filed:
April 11, 2022
Date of Patent:
February 25, 2025
Assignee:
Xencor, Inc.
Inventors:
Matthew Bernett, John R. Desjarlais, Rajat Varma, Ke Liu, Nargess Hassanzadeh-Kiabi, Rumana Rashid