Regeneron Pharmaceuticals, Inc.

Xunbao Duan

Douglas MacDonald

Christopher Daly

Ana Kostic

Brendan J Classon

Sumathi Sivapalasingam

Anne Gurnett-Bander

David Perez-Caballero

Julian Andreev

Terra Potocky

Andres Perez Bay

The protein known as human epidermal growth factor 2 (HER2) is expressed in breast cancer cells and its expression is correlated with aggressive tumor growth. The present invention provides novel full-length human (IgG) antibodies that bind to human HER2 (monospecific antibodies) or to APLP2 (monospecific antibodies). The present invention also provides novel bispecific antibodies (bsAbs) that bind to both HER2 and APLP2 and mediate internalization and degradation of HER2 via the APLP2 complex in the presence of HER2-expressing tumors. Described are bispecific antigen-binding molecules and ADCs comprising a first antigen-binding domain that specifically binds human APLP2, and a second antigen-binding domain that specifically binds human HER2. The described bispecific ADCs are capable of inhibiting the growth of certain tumors expressing HER2 and may be useful for the treatment of breast cancer and disorders in which targeting a therapeutic agent to HER2-expressing tumor cell is desirable and/or therapeutically beneficial. For example, the bispecific antibodies of the invention are useful for the treatment of breast cancers, including breast cancers having a IHC2+ classification. The present invention also includes anti-HER2 antibody drug conjugates which inhibit tumor growth in vivo.

Antibodies, and bispecific antigen-binding molecules that bind HER2 and/or APLP2, conjugates, and uses thereof

The present invention provides antibodies that bind to ErbB3 and methods of using same. According to certain embodiments of the invention, the antibodies are fully human antibodies that bind to human ErbB3. In certain embodiments, the antibodies of the present invention block the interaction of ErbB3 with an ErbB3 ligand such as neuregulin 1. The antibodies of the invention are useful for the treatment of various cancers.

Anti-ErbB3 antibodies and uses thereof

The present invention provides fully human antibodies that bind to respiratory syncytial virus F protein, compositions comprising the antibodies and methods of use. The antibodies of the invention are useful for preventing fusion of the virus with the cell membrane and preventing cell to cell spread of the virus, thereby providing a means of preventing the infection, or treating a patient suffering from the infection and ameliorating one or more symptoms or complications associated with the viral infection. The antibodies may also be useful for diagnosis of an infection by RSV.

Human antibodies to respiratory syncytial virus F protein and methods of use thereof

The present invention provides antibodies that bind to CD48 and methods of using same. According to certain embodiments of the invention, the antibodies are fully human antibodies that bind to human CD48. In certain embodiments, the antibodies of the present invention block the binding of CD48 to one or more CD48 receptor. The antibodies of the invention are useful, inter alia, for the treatment of diseases and disorders associated with one or more CD48 biological activities, including the treatment of allergic conditions and other inflammatory conditions, e.g., systemic lupus erythematosus.

Methods of treating systemic lupus erythematosus (SLE) using anti-CD48 antibodies

The present invention provides pharmaceutical compositions comprising an anti-ErbB3 antibody and an anti-EGFR antibody, and methods of use thereof. The compositions and methods of the present invention are useful for the treatment of various cancers and other diseases and disorders.

Methods and compositions comprising a combination of an anti-ErbB3 antibody and an anti-EGFR antibody

The present invention provides antibodies that bind to CD48 and methods of using same. According to certain embodiments of the invention, the antibodies are fully human antibodies that bind to human CD48. In certain embodiments, the antibodies of the present invention block the binding of CD48 to one or more CD48 receptor. The antibodies of the invention are useful, inter alia, for the treatment of diseases and disorders associated with one or more CD48 biological activities, including the treatment of allergic conditions and other inflammatory conditions.

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Horsham, PA, United States of America

Xunbao Duan