Abstract: The present invention relates to a particularly advantageous antibody, antibody fragment or derivative thereof, which specifically binds to/interacts with at least one epitope of the extracellular or intracellular domain or the mammalian EAG1 ion channel and to nucleic acid molecules encoding these anti-EAG1 antibodies, antibody fragments or derivatives and to vectors comprising such nucleic acid molecules. The invention additionally relates to methods for the preparation of such anti-EAG1 antibodies, antibody fragments or derivatives thereof, pharmaceutical compositions comprising these antibodies, antibody fragments or derivatives, and methods of using the antibodies, antibody fragments or derivatives or the compositions for a variety of purposes, such as diagnosing disease, treating disease, assessing for the presence of EAG1-expressing cells, or blocking EAG1 function in cells.

Abstract: The present invention relates to a particularly advantageous antibody, antibody fragment or derivative thereof, which specifically binds to/interacts with at least one epitope of the extracellular or intracellular domain or the mammalian EAG1 ion channel and to nucleic acid molecules encoding the same and to vectors comprising said nucleic acid molecules. The invention additionally relates to methods for the preparation of said antibody, antibody fragments or derivatives thereof and to pharmaceutical compositions comprising the same. Furthermore, the use of said antibody, antibody fragment or derivative thereof and also diagnostic compositions comprising said components are disclosed in the specification. The invention also relates to a method of assessing for the presence of EAG1 expressing cells and for a method of blocking EAG1 function in said cells. The invention further relates to a method of treating diseases with the help or said antibody or antibody fragment or derivative thereof.