Abstract: The present invention relates to combination therapy involving two or more Fc region-containing antigen-binding polypeptides, such as antibodies, wherein the polypeptides have been modified such that hetero-oligomerization between the polypeptides is strongly favored over homo-oligomerization when the polypeptides are bound to their corresponding target antigens. The invention also relates to polypeptides, compositions, kits and devices suitable for use in the combination therapy of the invention.

Abstract: Provided herein are combinations of first and second antibodies having modified Fc effector functions resulting from amino acid substitutions in the Fc region, the amino acid substitutions allow for co-dependent activation of effector functions such as CDC and/or ADCC. Also provided are combinations of first and second antibodies having agonistic activity or enhanced agonistic activity resulting from amino acid substitutions in the Fc region where the agonistic activity is co-dependent of both a first and second antibodies.

Abstract: The present invention relates to monospecific or bispecific antibody molecules that specifically bind the human DR5 antigen. The invention relates in particular to DR5-specific antibody molecules of the IgG1 isotype having a mutation in the Fc region that enhances clustering of IgG molecules after cell-surface antigen binding leading to the induction of DR5 signalling, apoptosis and cell death. The invention further relates to a combination of antibody molecules binding different epitopes on DR5. The invention also relates to pharmaceutical compositions containing these molecules and the treatment of cancer using these compositions.

Abstract: As described herein are polypeptides and antibodies having an Fc region and an antigen binding region where the Fc region has an Fc-Fc-enhancing mutation and a C1q binding-enhancing mutation providing for polypeptides or antibodies with increased CDC activity and/or agonistic activity.

Abstract: Described herein are polypeptides and related antibodies comprising a variant Fc domain. The variant Fc domain provide for stabilized Fc:Fc interactions when the polypeptide(s), antibody or antibodies are bound to its target, antigen or antigens on the surface of a cell, thus providing for improved effector functions, such as CDC-response.

Abstract: The present invention relates to dimeric proteins comprising amino acids at three different positions which are different from those present in a human IgG1. Six of said dimeric proteins are capable of forming a hexameric structure in solution.

Abstract: The present invention relates to monospecific or bispecific antibody molecules that specifically bind the human DR5 antigen. The invention relates in particular to DR5-specific antibody molecules of the IgG1 isotype having a mutation in the Fc region that enhances clustering of IgG molecules after cell-surface antigen binding leading to the induction of DR5 signaling, apoptosis and cell death. The invention further relates to a combination of antibody molecules binding different epitopes on DR5. The invention also relates to pharmaceutical compositions containing these molecules and the treatment of cancer using these compositions.

Abstract: Described herein are polypeptides and related antibodies comprising a variant Fc domain. The variant Fc domain provide for stabilized Fc:Fc interactions when the polypeptide(s), antibody or antibodies are bound to its target, antigen or antigens on the surface of a cell, thus providing for improved effector functions, such as CDC-response.

Abstract: Anti-DR5 family member antibodies and bispecific antibodies comprising one or more anti-DR5 family member antibodies are disclosed. These antibodies can be used to trigger cell death on DR5 positive cells.

Abstract: The present invention relates to antibody molecules that bind to Wall Teichoic Acid (WTA) or Capsular Polysaccharides (CP) such as Capsular Polysaccharides type 5 (CP5). The invention relates in particular to antibody molecules of the IgG isotype having a mutation in the Fc domain that enhances clustering of IgG molecules after target binding.

Abstract: Described herein are polypeptides and antibodies comprising a variant Fc region. The variant Fc region provides for stabilized Fc-Fc interactions when the polypeptide(s), antibody or antibodies are bound to its target, antigen or antigens on the surface of a cell, while at the same time also having decreased complement-dependent cytotoxicity (CDC) and may also have decreased activation of other effector functions resulting from one or more amino acid modifications in the Fc region.

Abstract: Anti-DR5 family member antibodies and bispecific antibodies comprising one or more anti-DR5 family member antibodies are disclosed. These antibodies can be used to trigger cell death on DR5 positive cells.

Abstract: Described herein are polypeptides and related antibodies comprising a variant Fc domain. The variant Fc domain provide for stabilized Fc:Fc interactions when the polypeptide(s), antibody or antibodies are bound to its target, antigen or antigens on the surface of a cell, thus providing for improved effector functions, such as CDC-response.