The present invention is directed to a monoclonal antibody that recognizes human FGFR4 in its native form. The invention is also directed to a hybridoma cell line that produces the monoclonal antibody and methods of use thereof.Linvention concerne un anticorps monoclonal qui reconnaît FGFR4 humain sous sa forme native. Linvention concerne également une lignée cellulaire dhybridome qui produit lanticorps monoclonal et ses procédés dutilisation.