Abstract: The present invention relates to antibodies and antigen binding fragments thereof which bind to the human CD70 protein with high affinity and display potent inhibition of tumour cell growth.

Abstract: The present invention relates to antibodies and antigen binding fragments thereof which bind to the human CD70 protein with high affinity and display potent inhibition of tumour cell growth.

Abstract: The present invention relates to amino acid sequences (also referred to herein as “single variable domain(s) of the invention”. “Nanobody™ of the invention” or “Nanobodies™ of the invention”, ilpolypeptide(s) of the invention”) that are directed against (as defined herein) members of the Notch signalling pathway such as the four mammalian members of the Notch Receptors (Notch-1, Notch-2, Notch-3, Notch-4, hereinafter also “Notch Receptors”) and the five mammalian members of the Notch Ligands (the Delta-like family with “DLL1”, “DLL3”, “DLL4” wherein “DLL” stands for Delta-like ligand; the Jagged family with “Jagged-1”, “Jagged-2”, hereinafter also “Notch Ligands”), as well as to constructs that comprise or essentially consist of one or more such single variable domain(s) (also referred to herein as “construct of the invention” and “constructs of the invention”, “Nanobody™ of the invention” or “Nanobodies™ of the invention”, respectively).

Abstract: Biparatopic protein constructs that are directed against IL-23, and in particular against the p19 subunit of IL-23. The constructs comprise at least a first binding domain or binding unit directed against a first defined epitope on p19 and at least a second binding domain or binding unit directed against a second defined epitope on p19 (or the p19/p40 interface). The binding domains or binding units may in particular be a domain antibody, a single domain antibody, a dAb or a Nanobody®. The constructs and pharmaceutical compositions comprising the same can be used for the prevention and/or treatment of diseases and disorders associated with IL-23 or IL-23 mediated signaling, such as inflammation and inflammatory disorders such as colitis, Crohn's disease and IBD, infectious diseases, psoriasis, cancer, autoimmune diseases, sarcoidosis, transplant rejection, cystic Fibrosis, asthma, chronic obstructive pulmonary disease, rheumatoid arthritis, viral infection, and common variable immunodeficiency.

Abstract: The present invention relates to amino acid sequences that are directed against proteins from the group of the Angiopoietin/Tie family such as Tie1, Tie2, Ang1, Ang2, Ang3, Ang4, Angptl1, Angptl12, Angptl13, Angptl14, Angptl15, Angptl16, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more of such amino acid sequences.

Abstract: The present invention relates to binding molecules, such as amino acid sequences with multiple antigen binding sites. In particular, the binding molecules of the present invention have at least two antigen binding sites that partially or fully overlap with each other and that are directed against at least two different naturally occurring binding molecules. The invention further relates to uses of such binders, for example in methods for inhibiting and/or blocking of the interaction between said at least two naturally occurring binding molecules and a third naturally occurring binding molecule.

Abstract: The present invention relates to amino acid sequences that are directed against (as defined herein) human cellular receptors for viruses and/or bacteria such as e.g. Nanobodies specifically recognizing hCD4, hCXCR4, hCCR5. hTLR4, human alphaV integrin, human beta3 integrin, human beta1 integrin, human alpha2 integrin, hCD81, hSR-B1, hClaudin-1, hClaudin-6 and hClaudin-9, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences. Said amino acid sequences may be used to prevent human cell entry of HIV, HCV, adenoviruses, hantavirus, herpesvirus, echo-virus 1 and others.

Abstract: The present invention relates to amino acid sequences that are directed against (as defined herein) Integrins, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences (also referred to herein as ?amino acid sequences of the invention? com?pounds of the invention?, poly?peptides of the invention?, respectively).

Abstract: The present invention relates to amino acid sequences that are directed against receptors for growth factors, compounds comprising such sequences, as well as nucleic acid sequences encoding the same. In one embodiment the invention relates to amino acid sequences that bind to a receptor tyrosine kinase. The receptor tyrosine kinase and/or growth factor receptor may be of human origin. In one embodiment the amino acid sequences are Nanobodies™.

Abstract: The present invention relates to amino acid sequences that block the interaction between (a target on) an antigen presenting cell (APC) and (a target on) a T-cell. More particularly, the present invention relates to amino acid sequences that are directed against (as defined herein) a target on an APC (also referred to herein as “APC target”) or a target on a T-cell (also referred to herein as “T-cell target”). The invention further relates to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences.

Abstract: The present invention relates to amino acid sequences that are directed against (as defined herein) G-protein coupled receptors (GPCRs) and in particular to CXCR4 and CXCR7, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences (also referred to herein as “amino acid sequences of the invention”, “compounds of the invention”, and “polypeptides of the invention”, respectively). Furthermore, the invention provides a new method of making amino acid sequences that are directed against transmembrane protein, and in particular for multiple spanning transmembrane proteins for which the native conformation cannot be reproduced in other “in vitro” system (e.g. GPCRs in general).

Abstract: The present invention relates to protein and polypeptide constructs that comprise single variable domains that are linked to an Fc portion. The immunoglobulin constructs comprise two polypeptide chains in which each polypeptide chain comprises two or more single variable domains that are linked, usually via a suitable hinge region or linker, to one or more constant domains that, together, form an Fc portion. The invention also relates to polypeptide chains that form part of such constructs and/or that can be used to form such constructs. The invention further relates to nucleotide sequences and nucleic acids that encode or can be used to express such constructs or polypeptide chains; to methods for producing such constructs and polypeptides chains; to compositions (and in particular pharmaceutical compositions) that comprise such constructs or polypeptide chains; and to uses of such constructs, polypeptide chains or compositions.

Abstract: The present invention relates in part to amino acid sequences that are directed against and/or that can specifically bind to an envelope protein of a virus, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences.

Abstract: The present invention relates to binding molecules, such as amino acid sequences with multiple antigen binding sites. In particular, the binding molecules of the present invention have at least two antigen binding sites that partially or fully overlap with each other and that are directed against at least two different naturally occurring binding molecules. The invention further relates to uses of such binders, for example in methods for inhibiting and/or blocking of the interaction between said at least two naturally occurring binding molecules and a third naturally occurring binding molecule.

Abstract: The present invention relates to amino acid sequences (also referred to herein as “single variable domain(s) of the invention”. “Nanobody™ of the invention” or “Nanobodies™ of the invention”, ilpolypeptide(s) of the invention”) that are directed against (as defined herein) members of the Notch signalling pathway such as the four mammalian members of the Notch Receptors (Notch-1, Notch-2, Notch-3, Notch-4, hereinafter also “Notch Receptors”) and the five mammalian members of the Notch Ligands (the Delta-like family with “DLL1”, “DLL3”, “DLL4” wherein “DLL” stands for Delta-like ligand; the Jagged family with “Jagged-1”, “Jagged-2”, hereinafter also “Notch Ligands”), as well as to constructs that comprise or essentially consist of one or more such single variable domain(s) (also referred to herein as “construct of the invention” and “constructs of the invention”, “Nanobody™ of the invention” or “Nanobodies™ of the invention”, respectively).

Abstract: The present invention relates to amino acid sequences that are directed against (at defined herein) heterodimeric cytokines and/or their receptors, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consists of one or more such amino acid sequences ( also referred to herein as “amino acid sequences of the invention”, “compounds of the invention”, and “polypeptides of the invention”, respectively).

Abstract: The present application relates to amino acid sequences that are directed against and/or that can specifically bind to metalloproteinases from the ADAM family, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such ammo acid sequences, and to methods of preparing the same.

Abstract: The present invention relates to amino acid sequences that are directed against (as defined herein) receptors for proteins with an immunoglobulin fold (Fc receptors), as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences. The invention also relates to nucleic acids encoding such amino acid sequences and polypeptides; to methods for preparing such amino acid sequences and polypeptides; to host cells expressing or capable of expressing such amino acid sequences or polypeptides; to compositions, and in particular to pharmaceutical compositions, that comprise such amino acid sequences, polypeptides, nucleic acids and/or host cells; and to uses of such amino acid sequences or polypeptides, nucleic acids, host cells and/or compositions, in particular for prophylactic, therapeutic or diagnostic puiposes, such as the prophylactic, therapeutic or diagnostic purposes mentioned herein.

Abstract: The present invention relates to amino acid sequences that are directed against chemokines, as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences. The invention also relates to nucleic acids encoding such amino acid sequences and polypeptides; to methods for preparing such amino acid sequences and polypeptides; to host cells expressing or capable of expressing such amino acid sequences or polypeptides; to compositions, and in particular to pharmaceutical compositions, that comprise such amino acid sequences, polypeptides, nucleic acids and/or host cells; and to uses of such amino acid sequences or polypeptides, nucleic acids, host cells and/or compositions, in particular for prophylactic, therapeutic or diagnostic purposes.

Abstract: The present invention relates to amino acid sequences that are directed G-protein coupled receptors (GPCRs), as well as to compounds or constructs, and in particular proteins and polypeptides, that comprise or essentially consist of one or more such amino acid sequences. The invention also relates to nucleic acids encoding such amino acid sequences and polypeptides to methods for preparing such amino acid sequences and polypeptides; to host cells expressing or capable of expressing such amino acid sequences or polypeptides; to compositions, and in particular to pharmaceutical compositions, that comprise such amino acid sequences, polypeptides, nucleic acids and/or host cells; and to uses of such amino acid sequences or polypeptides, nucleic acids, host cells and/or compositions, in particular for prophylactic, therapeutic or diagnostic purposes, such as the prophylactic, therapeutic or diagnostic purposes mentioned herein.