Abstract: The present invention provides humanized chimeric antigen receptors (CARs) targeting the B-cell receptor (BCR) of CLL cells characterised by R110-mutated immunoglobulin lambda variable 3-21 (IGLV3-21R110). The Invention also provides nucleic acid sequences encoding the forgoing CARs, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

Abstract: The present invention provides antibodies for the treatment of chronic lymphocytic leukemia (CLL). These antibodies target the B-cell receptor (BCR) of CLL cells characterised by R110-mutated immunoglobulin lambda variable 3-21 (IGLV3-21R110). The invention also provides nucleic acid sequences encoding the forgoing antibodies, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

Abstract: The present invention provides antibodies for the treatment of chronic lymphocytic leukemia (CLL). These antibodies target the B-cell receptor (BCR) of CLL cells characterised by R110-mutated immunoglobulin lambda variable 3-21 (IGLV3-21R110). The invention also provides nucleic acid sequences encoding the forgoing antibodies, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

Abstract: The present invention relates to the field of producing, identifying, and selecting biological binding molecules, e.g. in particular antibodies or fragments thereof, which selectively bind to somatically hypermutated B-cell receptors or B-cell receptor complexes. The method is used in order to select a biological binding molecule which specifically binds to a B-cell receptor having hypermutated regions as the target receptor, but not to a B-cell receptor without hypermutated regions, and is carried out in a cell-based system using immature B cells which are in the pro/pre stage and cause a ‘Triple Knockout’ of the genes for RAG2 or RAG1, Lambda5, and SLP65.

Abstract: The present invention relates to the field of the production, identification and selection of biological binding molecules such as antibodies or fragments thereof, as well as to their use in the therapy and prophylaxis of cancer diseases, such as, in particular, malignant B-cell neoplasia. The binding molecules are able to selectively bind to autonomously active or autonomously activated B-cell receptors, the autonomously active or autonomously activated B-cell receptors being characterized by the presence of structural domains to which the binding molecule selectively binds and which are responsible for the autonomously active or autonomously activated state of the B-cell receptors.