Macrogenics, Inc.

Duke University

The University of North Carolina at Chapel Hill

Liqin Liu

Leslie Sydnor Johnson

Chia-Ying Kao Lam

Scott Koenig

Paul A Moore

Ezio Bonvini

Barton F Haynes

Guido Ferrari

Jeffrey Lee Nordstrom

Gundo Diedrich

Ling Ling Huang

Kalpana Shah

Gurunadh Reddy Chichili

David Margolis

Bhaswati Barat

Stephen James Burke

Julia A Sung

Hua Watson Li

The invention is directed to bispecific molecules comprising an HIV-1 envelope targeting arm and an arm targeting an effector cell, compositions comprising these bispecific molecule and methods of use. In certain aspects, the bispecific molecules of the present invention can bind to two different targets or epitopes on two different cells within the first epitope is expressed on a different cell type than the second epitope, such that the bispecific molecules can bring the two cells together. In certain aspects, the bispecific molecules of the present invention can bind to two different cells, wherein the bispecific molecules comprises an arm with the binding specificity of A32, 7B2, CH27, CH28 or CH44.

Bispecific molecules comprising an HIV-1 envelope targeting arm

The present invention is directed to binding molecules that possess one or more epitope-binding sites specific for an epitope of CD137 and one or more epitope-binding sites specific for an epitope of a tumor antigen ('TA') (e.g., a “CD137×TA Binding Molecule”). In one embodiment, such CD137×TA Binding Molecules will be bispecific molecules, especially bispecific tetravalent diabodies, that are composed of two, three, four or more than four polypeptide chains and possessing two epitope-binding sites each specific for an epitope of CD137 and two epitope-binding sites each specific for an epitope of a TA. Alternatively, such CD137×TA Binding Molecules will be bispecific molecules, especially bispecific trivalent binding molecules composed of three or more polypeptide chains and possessing one or two epitope-binding sites each specific for an epitope of CD137 and one or two epitope-binding sites each specific for an epitope of a TA. The CD137×TA Binding Molecules of the invention are capable of simultaneous binding to CD137, and a TA. The invention is directed to pharmaceutical compositions that contain any such CD137×TA Binding Molecules. The invention is additionally directed to methods for the use of such molecules in the treatment of cancer and other diseases and conditions. The invention also provides novel CD137-binding molecules, and HER2/neu-binding molecules, as well as derivatives thereof and uses thereof.

Bispecific binding molecules that are capable of binding CD137 and tumor antigens, and uses thereof

The present invention relates to Tri-Specific Binding Molecules, which are multi-chain polypeptide molecules that possess three Binding Domains and are thus capable of mediating coordinated binding to three epitopes. The Binding Domains may be selected such that the Tri-Specific Binding Molecules are capable of binding to any three different epitopes. Such epitopes may be epitopes of the same antigen or epitopes of two or three different antigens. In a preferred embodiment, one of such epitopes will be capable of binding to CD3, the second of such epitopes will be capable of binding to CD8, and the third of such epitopes will be capable of binding to an epitope of a Disease-Associated Antigen. The invention also provides a novel ROR1-binding antibody, as well as derivatives thereof and uses for such compositions.

Multi-chain polypeptide-containing tri-specific binding molecules

The present invention is directed to molecules (e.g., an antibody, a diabody, an scFv, an antibody, a TandAb, etc.) capable of binding an epitope of human CD16 (a 'CD16 Binding Molecule'). The present invention is further directed to CD 16 Binding Molecules that are capable of binding an epitope of human CD16 and one or more epitope(s) of a Disease Antigen ('DA') (e.g., a &#x201c;CD16&#xd7;DA Binding Molecule&#x201d;). The present invention is particularly directed to such CD16&#xd7;DA Binding Molecules that are antibodies, or that comprise an Epitope Binding Domain thereof, or are diabodies (including DART&#xae; diabodies), bispecific antibodies, TandAbs, other multispecific binding molecules (e.g., trivalent TRIDENT&#x2122; molecules), etc. The invention particularly concerns CD16&#xd7;DA Binding Molecules that are capable of binding a Disease Antigen that is a Cancer Antigen or a Pathogen-Associated Antigen in addition to being able to bind CD 16. The invention particularly concerns the use of such CD16 and CD16&#xd7;DA Binding Molecules in the treatment of cancer and pathogen-associated diseases. The present invention is also directed to pharmaceutical compositions that comprise such molecule(s).

Bispecific CD16-binding molecules and their use in the treatment of disease

CD19&#xd7;CD3 bi-specific monovalent diabodies, and particularly, CD19&#xd7;CD3 bi-specific monovalent Fc diabodies, are capable of simultaneous binding to CD19 and CD3, and are used in the treatment of hematologic malignancies.

Bi-specific monovalent diabodies that are capable of binding CD19 and CD3, and uses thereof

The present invention is directed to binding molecules that possess one or more epitope-binding sites specific for an epitope of CD137 and one or more epitope-binding sites specific for an epitope of a tumor antigen ('TA') (e.g., a 'CD137&#xd7;TA Binding Molecule'). In one embodiment, such CD137&#xd7;TA Binding Molecules will be bispecific molecules, especially bispecific tetravalent diabodies, that are composed of two, three, four or more than four polypeptide chains and possessing two epitope-binding sites each specific for an epitope of CD137 and two epitope-binding sites each specific for an epitope of a TA. Alternatively, such CD137&#xd7;TA Binding Molecules will be bispecific molecules, especially bispecific trivalent binding molecules composed of three or more polypeptide chains and possessing one or two epitope-binding sites each specific for an epitope of CD137 and one or two epitope-binding sites each specific for an epitope of a TA. The CD137&#xd7;TA Binding Molecules of the invention are capable of simultaneous binding to CD137, and a TA. The invention is directed to pharmaceutical compositions that contain any such CD137&#xd7;TA Binding Molecules. The invention is additionally directed to methods for the use of such molecules in the treatment of cancer and other diseases and conditions. The invention also provides novel CD137-binding molecules, and HER2/neu-binding molecules, as well as derivatives thereof and uses thereof.

The present invention relates to bispecific molecules that are capable of localizing an immune effector cell that expresses an activating receptor to a virally infected cell, so as to thereby facilitate the killing of the virally infected cell. In a preferred embodiment, such localization is accomplished using bispecific molecules that are immunoreactive with an activating receptor of an immune effector cell and to an antigen expressed by a cell infected with a virus wherein the antigen is detectably present on the cell infected with the virus at a level that is greater than the level at which the antigen is detected on the virus by the bispecific molecules, and to the use of such bispecific molecules in the treatment of latent viral infections.

Bispecific molecules that are immunoreactive with immune effector cells that express an activating receptor and an antigen expressed by a cell infected by a virus and uses thereof

The invention is directed to bispecific molecules comprising an HIV-1 envelope targeting arm and an arm targeting an effector cell, compositions comprising these bispecific molecules and methods of use. In certain aspects, the bispecific molecules of the present invention can bind to two different targets or epitopes on two different cells wherein the first epitope is expressed on a different cell type than the second epitope, such that the bispecific molecules can bring the two cells together. In certain aspects, the bispecific molecules of the present invention can bind to two different cells, wherein the bispecific molecules comprises an arm with the binding specificity of A32, 7B2, CH27, CH28, or CH44.

CD 19&#xd7;CD3 bi-specific monovalent diabodies, and particularly, CD 19&#xd7;CD3 bi-specific monovalent Fc diabodies, are capable of simultaneous binding to CD 19 and CD3, and are used in the treatment of hematologic malignancies.

Growing community of inventors

Germantown, MD, United States of America

Liqin Liu