Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.

Abstract: Antibodies, or antigen-binding fragments thereof, that bind to Lymphocyte-activation gene-3 (LAG-3) are described, in particular antibodies, or antigen-binding fragments thereof, that are agonists of LAG-3. The antibodies bind to LAG-3 and inhibit antigen-induced CD4+ and/or CD8+ T cell proliferation, or antigen-induced CD4+ and/or CD8+ T cell activation.

Abstract: This invention relates to the use of a LAG-3 protein or a derivative thereof and optionally a chemotherapy agent for the treatment of cancer in a subject. The subject may have one or more of a low monocyte count, a Luminal B breast cancer, an age of less than about 85 years, has been previously treated with a CDK4/6 inhibitor, and has not previously undergone treatment with a taxane chemotherapy. Suitably, the cancer is a breast cancer, such as a hormone receptor positive breast cancer.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.

Abstract: Antibodies, or antigen-binding fragments thereof, that bind to Lymphocyte-activation gene-3 (LAG-3) are described, in particular antibodies, or antigen-binding fragments thereof, that are agonists of LAG-3. The antibodies bind to LAG-3 and inhibit antigen-induced CD4+ and/or CD8+ T cell proliferation, or antigen-induced CD4+ and/or CD8+ T cell activation. The antibodies may be used as medicaments, in particular for the treatment of conditions associated with proliferation and/or activation of CD4+ and/or CD8+ T cells, such as inflammatory and autoimmune disorders.

Abstract: The present invention relates to the use of a recombinant LAG-3 or derivatives thereof in order to boost a monocyte-mediated immune response, in particular to elicit an increase in the number of monocytes in blood. This finds use in the development of novel therapeutic agents for the treatment of an infectious disease or cancer.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells).

Abstract: The present invention relates to the use of a recombinant LAG-3 or derivatives thereof in order to boost a monocyte-mediated immune response, in particular to elicit an increase in the number of monocytes in blood. This finds use in the development of novel therapeutic agents for the treatment of an infectious disease or cancer.

Abstract: Assays for screening for, or determining activity of, an agonist of lymphocyte-activation gene 3 (LAG-3) are described. According to the assays, a plurality of effector T cells is provided, each effector T cell expressing LAG-3 and a T-cell receptor (TCR) on its surface, and comprising a reporter gene encoding a reporter, wherein expression of the reporter is regulated by LAG-3-mediated inhibition of TCR signaling within the effector T cells. Activity of the agonist is determined from the extent to which expression of the reporter is altered in the presence of the agonist compared with expression of the reporter in the absence of the agonist. The assays may be used for determining the potency of a preparation of the agonist as part of a quality control step in production of the agonist, or for stability testing of a preparation of the agonist. Kits for carrying out the assays are also described.

Abstract: The present disclosure relates to agonistic anti-LAG-3 (CD223) antibodies which inhibit T cell receptor (TCR)-mediated signal transduction in LAG-3 positive T cells through agonism of LAG-3. The antibodies bind specifically to a discontinuous epitope within the extracellular lg superfamily domain D1 of LAG-3 protein, wherein the epitope lies outside a 30 amino acid extra-loop sequence of domain D1 of the LAG-3 protein. Use of the antibodies as medicaments is described.

Abstract: Combination therapies comprising antibody molecules that specifically bind to LAG-3 are disclosed. The combination therapies can be used to treat, prevent and/or diagnose cancerous or infectious disorders.

Abstract: Cytotoxic anti-LAG-3 monoclonal antibodies or fragments thereof causing depletion of LAG-3+ activated T cells are described, as are related pharmaceuticals and methods of treating. Also described are related nucleic acid and protein sequences.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.

Abstract: Antibody molecules that specifically bind to LAG-3 are disclosed. The anti-LAG-3 antibody molecules can be used to treat, prevent and/or diagnose cancerous or infectious disorders.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.

Abstract: Combined preparations for the treatment of cancer are described. The combined preparations comprise: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) an anti-neoplastic agent, wherein the anti-neoplastic agent is a platinum-based anti-neoplastic agent or a topoisomerase I inhibitor. Methods for the treatment of cancer using the combined preparations are also described.

Abstract: Combined preparations for the treatment of cancer are described. The combined preparations comprise: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) an anti-neoplastic agent, wherein the anti-neoplastic agent is a platinum-based anti-neoplastic agent or a topoisomerase I inhibitor. Methods for the treatment of cancer using the combined preparations are also described.

Abstract: Antibody molecules that specifically bind to LAG-3 are disclosed. The anti-LAG-3 antibody molecules can be used to treat, prevent and/or diagnose cancerous or infectious disorders.

Abstract: Combined preparations, and pharmaceutical compositions, comprising: (a) LAG-3 protein, or a derivative thereof that is able to bind to MHC class II molecules; and (b) a programmed cell death protein-1 (PD-1) pathway inhibitor, are described. The PD-1 pathway inhibitor, such as an anti-PD-1 antibody or an anti-PD-L1 antibody, and a soluble derivative of LAG-3, acting as an APC activator, together synergistically activate T cells (in particular, CD8+ T cells). Use of the combined preparations and compositions as medicaments, in particular for the treatment of cancer or infection, and to methods for the treatment of cancer or infection, is described.