Described herein, are antibodies specific for epsin-1 (EPN1), an antigen expressed on the surface of various cancer cells. Methods for treating, ameliorating and diagnosing various types of cancers characterized by EPN1-expressing tumor cells are also disclosed.L'invention concerne des anticorps spécifiques de l'epsine-1 (EPN1), un antigène exprimé sur la surface de diverses cellules cancéreuses. L'invention concerne également des procédés de traitement, d'amélioration et de diagnostic de divers types de cancers caractérisés par des cellules tumorales exprimant EPN1.