Abstract: The present technology provides polypeptides comprising a first immunoglobulin single variable domain (ISVD) binding to albumin, a second ISVD capable of binding to both the constant domain of a human T cell receptor (TCR) on a T cell and the constant domain of a non-human primate TCR on a T cell, wherein said first and second ISVD are linked by a protease cleavable linker, and a targeting moiety. The present technology further provides nucleic acids encoding said polypeptides as well as vectors, hosts and methods to produce these polypeptides. Moreover, the present technology relates to methods for treatment making use of the polypeptides according to the present technology.

Abstract: VH domain, in which: (i) the amino acid residue at position 112 is one of K or Q; and/or (ii) the amino acid residue at position 89 is T; and/or (iii) the amino acid residue at position 89 is L and the amino acid residue at position 110 is one of K or Q; and (iv) in each of cases (i) to (iii), the amino acid at position 11 is preferably V; and in which said VH domain contains a C-terminal extension (X)n, in which n is 1 to 10, preferably 1 to 5, such as 1, 2, 3, 4 or 5 (and preferably 1 or 2, such as 1); and each X is an (preferably naturally occurring) amino acid residue that is independently chosen, and preferably independently chosen from the group consisting of alanine (A), glycine (G), valine (V), leucine (L) or isoleucine (I).

Abstract: The present invention relates to amino acid sequences that can bind to serum albumin. In particular, the present invention relates to immunoglobulin single variable domains, and in particular heavy-chain immunoglobulin single variable domains, that can bind to serum albumin. The invention also relates to proteins, polypeptides and other constructs, compounds, molecules or chemical entities that comprise at least one of the immunoglobulin single variable domains binding to serum albumin that are described herein.

Abstract: The present invention relates to improved immunogenicity assays and methods for performing the same. In particular, the present invention relates to improved immunogenicity assays that are capable of distinguishing neutralizing anti-drug antibodies from non-neutralizing anti-drug antibodies. More in particular, the present invention relates to improved immunogenicity assays that allow (amounts and/or concentrations of) neutralizing anti-drug antibodies to be detected and/or measured in a sample even in the presence of non-neutralizing anti-drug antibodies.

Abstract: Described herein are methods, assays and techniques for detecting and/or measuring anti-drug antibodies that bind to a protein, polypeptide or other compound or molecule that comprises at least one immunoglobulin variable domain with an exposed C-terminal region.

Abstract: The present invention relates to an improved method for the manufacture of immunoglobulin single variable domains. More specifically, the present invention relates to a method of producing immunoglobulin single variable domains in which the proportion of carbamylated variants is strongly reduced or absent and to improved immunoglobulin single variable domains obtainable by methods of the present invention.

Abstract: This invention provides, and in certain specific but non-limiting aspects relates to: assays that can be used to predict whether a given ISV will be subject to protein interference as described herein and/or give rise to an (aspecific) signal in such an assay (such as for example in an ADA immunoassay).

Abstract: The present disclosure provides a novel type of drug for treating a subject suffering from an inflammatory disease. Specifically, the disclosure provides polypeptides comprising at least three immunoglobulin single variable domains (ISVDs), characterized in that at least one ISV binds to OX40L and at least two ISVDs bind to IL-13. The present disclosure also provides nucleic acids, vectors and compositions.

Abstract: T cell recruiting polypeptides are provided that bind CD3 on a T cell. The polypeptides can be used in methods for treatment of cancers.

Abstract: In a broad aspect the present invention generally relates to novel dimer-complexes (herein called “non-fused-dimers” or NFDs) comprising single variable domains, methods of making these complexes and uses thereof. These non-covalently bound dimer-complexes consist of two identical monomers that each comprises of one or more single variable domains (homodimers) or of two different monomers that each comprises on or more single variable domains (heterodimers). The subject NFDs have typically altered e.g. improved binding characteristics over their monomeric counterpart. The NFDs of the invention may further be engineered through linkage by a flexible peptide or cysteines in order to improve the stability. This invention also describes conditions under which such NFDs are formed and conditions under which the formation of such dimers can be avoided.

Abstract: The present technology aims at providing a novel type of drug for treating a subject suffering from an inflammatory disease. Specifically, the present technology provides polypeptides comprising at least four immunoglobulin single variable domains (ISVDs), characterized in that at least two ISVDs bind to IL-13 and at least two ISVDs binds to TSLP. The present technology also provides nucleic acids, vectors and compositions.

Abstract: The present invention relates method for purifying antibodies, said method comprising a limited number of steps while still allowing obtaining high yields of purified antibodies with an appropriate degree of purity. Briefly, this method comprises only filtration and precipitation steps, omitting the need for chromatography steps.

Abstract: The present invention relates to improved immunogenicity assays and methods for performing the same. In particular, the present invention relates to improved immunogenicity assays that are capable of distinguishing neutralizing anti-drug antibodies from non-neutralizing anti-drug antibodies. More in particular, the present invention relates to improved immunogenicity assays that allow (amounts and/or concentrations of) neutralizing anti-drug antibodies to be detected and/or measured in a sample even in the presence of non-neutralizing anti-drug antibodies.

Abstract: The invention provides novel LRP5-binding polypeptides, and more specifically novel LRP5-binding immunoglobulin single variable domain constructs which can inhibit Wnt signaling pathways. The invention also relates to specific sequences of such polypeptides, methods of their production, and methods of using them, including methods of treatment of diseases such as cancer.

Abstract: The present technology aims at providing a novel type of drug for treating a subject suffering from an inflammatory disease. Specifically, the present technology provides polypeptides comprising at least four immunoglobulin single variable domains (ISVDs), characterized in that at least two ISVDs bind to IL-13 and at least two ISVDs binds to TSLP. The present technology also provides nucleic acids, vectors and compositions.

Abstract: The present invention relates to dimers comprising a first polypeptide and a second polypeptide, wherein each of said first and second polypeptide comprises at least one immunoglobulin single variable domain (ISVD) and a C-terminal extension comprising a cysteine moiety (preferably at the C-terminus), wherein said first polypeptide and said second polypeptide are covalently linked via a disulfide bond between the cysteine moiety of said first polypeptide and the cysteine moiety of said second polypeptide, in which the dimer outperformed the benchmark constructs, e.g. cognate multivalent and multispecific constructs, in various assays. The present invention provides methods for making the dimers of the invention.

Abstract: T cell recruiting polypeptides are provided that bind CD3 on a T cell. The polypeptides can be used in methods for treatment of cancers.

Abstract: The present technology relates to the field of drug delivery and provides molecules comprising or consisting of at least one ISVD suitable for site-specific conjugation, wherein the ISVD comprises at least one, preferably at least two, attachment point(s) or conjugation site(s).

Abstract: The invention provides LRP5-binding polypeptides, and more specifically LRP5-binding immunoglobulin single variable domain constructs which can inhibit Wnt signaling pathways. The invention also relates to specific sequences of such polypeptides, methods of their production, and methods of using them, including methods of treatment of diseases such as cancer.

Abstract: The present invention relates to a method for producing a domain antibody in a yeast, wherein the formation of disulfide bridges in the domain antibody is promoted. The method encompasses the addition of oxidizing agents, preferably oxidizing metal ions, preferably one or more selected from Cu2+, Fe2+, Fe3+ and Zn2+.