Patents by Inventor Sanjay Khare
Sanjay Khare 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: 20220098294Abstract: The present disclosure provides activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM). The present disclosure provides activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM. Furthermore the present disclosure also provides ABPs which contain a first TBM, a second TBM and a CM. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. The disclosure further provides libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. The disclosure further provides ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: ApplicationFiled: April 30, 2021Publication date: March 31, 2022Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 11028162Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: August 13, 2018Date of Patent: June 8, 2021Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Publication number: 20190211089Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: ApplicationFiled: August 13, 2018Publication date: July 11, 2019Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 10259854Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: GrantFiled: November 28, 2016Date of Patent: April 16, 2019Assignee: ImmunGene IncInventors: Iqbal Grewal, Sanjay Khare, Michael Gresser, Rashid Syed
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Publication number: 20180312561Abstract: The present invention relates to methods of treating a proliferative disease (such as cancer) in an individual, comprising administering to the individual a non-naturally occurring fusion molecule comprising an antibody against one or more tumor-associated antigen (“TAA Ab”) attached to an interferon (IFN) molecule (hereinafter “TAA Ab-IFN fusion molecule”), as monotherapy at therapeutically effective low doses, or in combination with immunotherapy, wherein the combination therapy provides increased effector cell killing. The methods of the present invention are particularly effective treating recurrent, resistant, or refractory proliferative diseases.Type: ApplicationFiled: June 10, 2016Publication date: November 1, 2018Inventors: Michael Gresser, Sanjay Khare, Kristopher Steward
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Patent number: 10077300Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: September 14, 2015Date of Patent: September 18, 2018Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 9783589Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof for treatment of autoimmune diseases. More specifically, the present invention provides novel genetically engineered fusion molecules comprising an interferon (IFN) molecule attached to an antibody (Ab) which targets an antigen which is differentially expressed or up-regulated on activated T cells as compared to resting T cells, wherein the fusion molecule when contacted to an activated T cell results in induced apoptosis and programmed cell death or impairment of functions of said activated T cell.Type: GrantFiled: August 13, 2013Date of Patent: October 10, 2017Assignee: IMMUNGENE INCInventors: Iqbal Grewal, Sanjay Khare, Michael Gresser
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Publication number: 20170073388Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: ApplicationFiled: November 28, 2016Publication date: March 16, 2017Inventors: Iqbal Grewal, Sanjay Khare, Michael Gresser, Rashid Syed
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Patent number: 9534056Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to engineered fusion molecules comprising an antibody (Ab) which can target tumor cells (e.g., RITUXIN®), fused to one or more biologic moieties capable of inducing apoptosis in tumor cells, e.g., tumor necrosis factor super family (TNFSF) member ligands such as TNF-?, CD40L, CD95L (also “FasL/Apo-1L”) and TRAIL/Apo-2L. Importantly, the engineered fusion molecules of the present invention retain the death-inducing properties of the biologic moiety at optimum concentrations and with reduced systemic toxicities.Type: GrantFiled: June 6, 2012Date of Patent: January 3, 2017Assignee: IMMUNGENE INCInventors: Iqbal Grewal, Michael Gresser, Sanjay Khare, Rashid Syed
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Patent number: 9534057Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: GrantFiled: February 2, 2015Date of Patent: January 3, 2017Assignee: IMMUNGENE INCInventors: Iqbal Grewal, Sanjay Khare, Michael Gresser, Rashid Syed
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Publication number: 20160122425Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: ApplicationFiled: September 14, 2015Publication date: May 5, 2016Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 9169321Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: July 24, 2013Date of Patent: October 27, 2015Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Publication number: 20150203560Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof for treatment of autoimmune diseases. More specifically, the present invention provides novel genetically engineered fusion molecules comprising an interferon (IFN) molecule attached to an antibody (Ab) which targets an antigen which is differentially expressed or up-regulated on activated T cells as compared to resting T cells, wherein the fusion molecule when contacted to an activated T cell results in induced apoptosis and programmed cell death or impairment of functions of said activated T cell.Type: ApplicationFiled: August 13, 2013Publication date: July 23, 2015Inventors: Iqbal Grewal, Sanjay Khare, Michael Gresser
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Publication number: 20150139951Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: ApplicationFiled: February 2, 2015Publication date: May 21, 2015Inventors: Iqbal Grewal, Sanjay Khare, Michael Gresser, Rashid Syed
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Patent number: 8980267Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: GrantFiled: March 4, 2013Date of Patent: March 17, 2015Assignee: ImmunGene IncInventors: Iqbal Grewal, Sanjay Khare, Michael Gresser, Rashid Syed
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Publication number: 20140105860Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to engineered fusion molecules comprising an antibody (Ab) which can target tumor cells (e.g., RITUXIN®), fused to one or more biologic moieties capable of inducing apoptosis in tumor cells, e.g., tumor necrosis factor super family (TNFSF) member ligands such as TNF-?, CD40L, CD95L (also “FasL/Apo-1L”) and TRAIL/Apo-2L. Importantly, the engineered fusion molecules of the present invention retain the death-inducing properties of the biologic moiety at optimum concentrations and with reduced systemic toxicities, thus improving the therapeutic index of the engineered fusion molecules.Type: ApplicationFiled: June 6, 2012Publication date: April 17, 2014Applicant: IMMUNGENE INCInventors: Iqbal Grewal, Michael Gresser, Sanjay Khare, Rashid Syed
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Publication number: 20140045195Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: ApplicationFiled: July 24, 2013Publication date: February 13, 2014Applicants: CytomX Therapeutics, Inc., The Regents of the University of CaliforniaInventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 8529898Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: March 6, 2012Date of Patent: September 10, 2013Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Publication number: 20130230517Abstract: The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-?) mutant molecule. The engineered Ab-IFN-? mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-? fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-? fusion molecules.Type: ApplicationFiled: March 4, 2013Publication date: September 5, 2013Applicant: ImmunGene Inc.Inventors: IQBAL GREWAL, SANJAY KHARE, MICHAEL GRESSER, RASHID SYED
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Patent number: 8518404Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: March 2, 2012Date of Patent: August 27, 2013Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert