The present invention relates to antigen-binding proteins, or antigen-binding fragments thereof. In particular, the present invention relates to antigen-binding proteins, or antigen- binding fragments thereof that bind to ERBB2. Compositions comprising a physiologically acceptable carrier and a therapeutically effective amount of the antigen-binding protein, or antigen-binding fragment thereof, use of the antigen-binding protein, or antigen-binding fragment thereof, methods for detecting cancer as well as kits when used in such methods are also provided.
