Abstract: The present disclosure relates to engineered IgG Fc constructs and uses thereof.

Abstract: The present invention features antibodies that bind to human neonatal Fc receptor (FcRn). These anti-FcRn antibodies are useful, e.g., to promote clearance of autoantibodies in a subject, to suppress antigen presentation in a subject, to block an immune response, e.g., block an immune complex-based activation of the immune response in a subject, and to treat immunological diseases (e.g., autoimmune diseases) in a subject. These anti-FcRn antibodies are also useful, e.g., to decrease pathogenic antibody transport across the placenta of a pregnant subject, to increase pathogenic antibody catabolism in a pregnant subject, and to treat an antibody-mediated enhancement of viral disease in a fetus or a neonate.

Abstract: The present invention features antibodies that have high binding affinity to human neonatal Fc receptor (FcRn). These anti-FcRn antibodies are useful, e.g., to promote clearance of autoantibodies in a subject, to suppress antigen presentation in a subject, to block an immune response, e.g., block an immune complex-based activation of the immune response in a subject, and to treat immunological diseases (e.g., autoimmune diseases) in a subject.

Abstract: The present disclosure relates to the characterization and production of biologics.

Abstract: Pharmaceutical preparations containing polypeptides having particular sialylation patterns, and methods for the treatment of immune-related thrombocytopenia with such preparations, are described.

Abstract: Described herein are methods for treating rheumatoid arthritis by determining whether a subject having rheumatoid arthritis will respond to an anti-TNF-alpha therapy based on the number of innate and adaptive immune cells in a sample from the subject prior to treatment.

Abstract: The present disclosure relates to compositions and methods of engineered IgG Fc constructs, wherein the Fc constructs include one or more Fc domains.

Abstract: The invention encompasses the discovery that Fc-containing polypeptides that include branched glycans and that are sialylated on the branched glycan (e.g., on an ? 1,3 and/or ? 1,6 arm in the Fc region's N-linked glycosylation site), with, e.g., a NeuA-? 2,6-Gal or NeuAc-? 2,3-Gal terminal linkage, are useful in treating neurodegeneration, e.g., in the treatment of neurodegenerative diseases such as Alzheimer's Disease. The present disclosure provides, in pert, methods for treating neurodegeneration or neurodegenerative diseases by administering compositions containing such Fc-containing polypeptides as well as methods for evaluating, identifying, and/or producing (e.g., manufacturing) such polypeptides for the treatment of neurodegeneration.

Abstract: The present application features antibodies that bind to human neonatal Fc receptor (FcRn). These anti-FcRn antibodies are useful, e.g., to promote clearance of autoantibodies in a subject, to suppress antigen presentation in a subject, to block an immune response, e.g., block an immune complex-based activation of the immune response in a subject, and to treat immunological diseases (e.g., autoimmune diseases) in a subject. These anti-FcRn antibodies are also useful, e.g., to decrease pathogenic antibody transport across the placenta of a pregnant subject, to increase pathogenic antibody catabolism in a pregnant subject, and to treat an antibody-mediated enhancement of viral disease in a fetus or a neonate.

Abstract: Polypeptides having target levels of C-terminal variants are described.

Abstract: Characterization and production of protein preparations, e.g., therapeutic glycoprotein preparations, are described.

Abstract: Characterization and production of protein preparations, e.g., therapeutic glycoprotein preparations, are described.

Abstract: Disclosed herein are methods of manufacturing therapeutic proteins.

Abstract: The present invention features antibodies that have high binding affinity to human neonatal Fc receptor (FcRn). These anti-FcRn antibodies are useful, e.g., to promote clearance of autoantibodies in a subject, to suppress antigen presentation in a subject, to block an immune response, e.g., block an immune complex-based activation of the immune response in a subject, and to treat immunological diseases (e.g., autoimmune diseases) in a subject.

Abstract: Polypeptides having target levels of C-terminal variants are described.

Abstract: The invention encompasses the discovery that Fc-containing polypeptides that include branched glycans and that are sialylated on the branched glycan (e.g., on an ? 1,3 and/or ? 1,6 arm in the Fc region's N-linked glycosylation site), with, e.g., a NeuAc-? 2,6-Gal or NeuAc-? 2,3-Gal terminal linkage, are useful in treating neurodegeneration, e.g., in the treatment of neurodegenerative diseases such as Alzheimer's Disease. The present disclosure provides, in part, methods for treating neurodegeneration or neurodegenerative diseases by administering compositions containing such Fc-containing polypeptides as well as methods for evaluating, identifying, and/or producing (e.g., manufacturing) such polypeptides for the treatment of neurodegeneration.

Abstract: The present disclosure provides, in part, methods for evaluating, identifying, and/or producing (e.g., manufacturing) a CTLA4-Fc fusion protein, e.g., abatacept. In some instances, methods herein allow highly resolved evaluation of abatacept useful for, inter alia, manufacturing abatacept, characterizing abatacept, identifying and/or confirming abatacept, monitoring the structure of abatacept, comparing abatacept preparations made over time or made under different conditions, and/or controlling the structure of abatacept.

Abstract: Modified glycoproteins, and methods of making and using such modified glycoproteins, are described.

Abstract: Sulfated glycoproteins, and methods of making and using such sulfated glycoproteins, are described.

Abstract: Provided herein are methods for treating fibrosis, including diseases or disorders associated with fibrosis, for example systemic sclerosis.