Alethia Biotherapeutics Inc.

Adc Therapeutics Sa

Daiichi Sankyo Company, Limited

National Research Council of Canada

Mario Filion

Gilles Bernard Tremblay

Roy Rabindranauth Sooknanan

Traian Sulea

Anna N Moraitis

Matthew Stuible

Elisabeth Viau

Breast cancer cells lacking ER protein expression, PgR protein expression and/or showing absence of HER2 protein over-expression (i.e., triple-negative breast cancer cells, basal-like) can be efficiently targeted with an anti-KAAG1 antibody and killed upon delivery of a therapeutic moiety. Antibodies and antigen binding fragments that specifically binds to KAAG1 may thus be used for the, detection and therapeutic treatment of breast cancer cells that are negative for at least one of these markers. The use of antibody conjugates in the treatment of triple-negative breast cancer and/or basal-like breast cancer is disclosed herein.

Method for treating breast cancer

Novel antibodies and antigen binding fragments that specifically bind to KAAG1 and which may be used in the treatment, detection and diagnosis of cancer comprising KAAG1-expressing cells are disclosed herein. Cells expressing the antibodies and antigen binding fragments as well as methods of detecting and treating cancer using the antibodies and fragments are also disclosed. Cancer indications which may benefit from such treatment or detection include ovarian cancer, renal cancer, lung cancer, colorectal cancer, breast cancer, brain cancer, and prostate cancer, as well as melanomas.

Antibodies against kidney associated antigen 1 and antigen binding fragments thereof

This invention relates, in part, to unique and newly identified genetic polynucleotides involved in the process of bone remodeling; variants and derivatives of the polynucleotides and corresponding polypeptides; uses of the polynucleotides, polypeptides, variants and derivatives; and methods and compositions for the amelioration of symptoms caused by bone remodeling disorders. Disclosed in particular are, the isolation and identification of polynucleotides, polypeptides, variants and derivatives involved in osteoclast activity, validation of the identified polynucleotides for their potential as therapeutic targets and use of the polynucleotides, polypeptides, variants and derivatives for the amelioration of disease states and research purposes.

Methods of impairing osteoclast differentiation using antibodies that bind siglec-15

Novel monoclonal antibodies that specifically bind to KAAG1 are described. In some embodiments, the antibodies block the biological activity of KAAG1 and are useful in composition in certain cancers, more particularly in cancers that have increased cell surface expression of KAAG1, such as ovarian, renal, lung, colorectal, breast, brain, and prostate cancer, as well as melanoma. The invention also relates to cells expressing the monoclonal antibodies and antigen binding fragments such as humanized and chimeric antibodies. Additionally, methods of detecting and treating cancer using the antibodies and fragments are also disclosed.

Anti-kidney associated antigen 1 (KAAG1) antibodies

Epidermal growth factor receptor (EGFR) expression and phosphorylation is increased in cancer cells treated with anti-clusterin antibodies. Such treatment is also accompanied with the reappearance of an epithelial phenotype of the cancer cell, as determined by an increased E-cadherin expression at the surface of cancer cells. Clusterin inhibitors may thus induce reversal of the epithelial to mesenchymal phenotype and restore sensitivity of cancer cells to EGFR inhibitors. Combinations of a clusterin inhibitor and an EGFR as well as their use in treatment of cancer are thus provided herewith.

Co-use of a clusterin inhibitor with an EGFR inhibitor to treat cancer

This invention relates, in part, to unique and newly identified genetic polynucleotides involved in the process of bone remodeling, variants and derivatives of the polynucleotides and corresponding polypeptides, uses of the polynucleotides, polypeptides, variants and derivatives, and methods and compositions for the amelioration of symptoms caused by bone remodeling disorders. Disclosed in particular are the isolation and identification of polynucleotides polypeptides variants and derivatives involved in osteoclast activity, validation of the identified polynucleotides for their potential as therapeutic targets and use of the polynucleotides, polypeptides, variants and derivatives for the amelioration of disease states and research purposes.

Polynucleotides and polypeptide sequences involved in the process of bone remodeling

Novel antibodies and antigen binding fragments that specifically binds to Siglec-15 are described herein. In some embodiments, the antibodies or antigen binding fragments may block the biological activity of Siglec-15 and are useful in composition for the treatment of bone loss, more particularly in bone diseases that have increased cell surface expression of Siglec-15, such as conditions where there is an increase in the bone degradative activity of osteoclasts. The invention also relates to cells expressing the antibodies or antigen binding fragments such as monoclonal, humanized or chimeric antibodies. Additionally, methods of detecting and treating bone loss, bone-related diseases or cancer using the antibodies and fragments are also disclosed.

Siglec-15 antibodies in treating bone loss-related disease

Antibodies and antigen binding fragments that specifically bind to clusterin are described. In some embodiments, the antibodies block the biological activity of clusterin and are useful in composition in certain cancers, more particularly in cancers, such as endometrial carcinoma, breast carcinoma, hepatocellular carcinoma, prostate carcinoma, a renal cell carcinoma, ovarian carcinoma, pancreatic carcinoma, and colorectal carcinoma. The invention also relates to cells expressing the humanized or hybrid antibodies. Additionally, methods of detecting and treating cancer using the antibodies and fragments are also disclosed.

Anti-clusterin antibodies and antigen binding fragments and their use to reduce tumor volume

Antibodies and antigen binding fragments that specifically binds to Siglec-15 are described herein. These antibodies or antigen binding fragments may have the ability of inhibiting differentiation of osteoclasts and/or the ability of inhibiting the bone resorption activity of osteoclasts. Compositions and cells expressing anti-Siglec-15 antibodies or antigen binding fragments are also disclosed herewith. Anti-Siglec-15 antibodies may also be useful for the treatment of bone loss, or bone diseases. Methods for the detection or diagnosis of bone loss or bone-related diseases are also described.

Anti-Siglec-15 antibodies

Novel antibodies and antigen binding fragments that specifically binds to Siglec-15 are described herein In some embodiments, the antibodies or antigen binding fragments may block the biological activity of Siglec-15 and are useful in composition for the treatment of bone loss, more particularly in bone diseases that have increased cell surface expression of Siglec-15, such as conditions where there is an increase in the bone degradative activity of osteoclasts The invention also relates to cells expressing the antibodies or antigen binding fragments such as monoclonal, humanized or chimeric antibodies Additionally, methods of detecting and treating bone loss, bone-related diseases or cancer using the antibodies and fragments are also disclosed.

Nucleic acids encoding anti-Siglec-15 antibodies

This invention relates, in part, to unique and newly identified genetic polynucleotides involved in the process of bone remodeling, variants and derivatives of the polynucleotides and corresponding polypeptides, uses of the polynucleotides, polypeptides, variants and derivatives, and methods and compositions for the amelioration of symptoms caused by bone remodeling disorders. Disclosed in particular are the isolation and identification of polynucleotides, polypeptides, variants and derivatives involved in osteoclast activity, validation of the identified polynucleotides for their potential as therapeutic targets and use of the polynucleotides, polypeptides, variants and derivatives for the amelioration of disease states and research purposes.

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Longueuil, Canada

Mario Filion