Abstract: The present invention is related to antibodies with binding affinity to fibroblast growth factor receptor 2 (FGFR2) optionally with binding affinity to other FGF receptors, which block both ligand-dependent and constitutive ligand independent receptor activation. Specifically, the present invention relates to antibodies with high affinity to more than one FGF receptor subtype, and fragments thereof, useful in treating disorders including cell proliferative diseases.

Abstract: The present invention provides a method of preventing and treating a T cell mediated disease, including inflammatory autoimmune diseases and in particular rheumatoid arthritis, by administering to an individual in need thereof at least one FGFR 3 inhibitor including a molecule comprising the antigen-binding portion of an antibody having a specific affinity for fibroblast growth factor receptor 3 (FGFR3), a FGFR3 specific small organic molecule tyrosine kinase inhibitor, a FGFR3 specific soluble receptor, a FGFR3 peptide or peptidomimetic, a FGFR3 specific RNA inhibitor, a FGFR3 specific antagonist ligand or a DNA vaccine encoding FGFR3 or a fragment thereof, or an inhibitor of heparan sulfate binding.