| abstract |
A polypeptide comprising a first binding domain that is an antibody capable of binding to an epitope of the human CD3ε chain and of Callithrix jacchus, Saguinus oedipus or Saimiri sciureus, in which the epitope forms an amino acid sequence comprised in the group that It consists of SEQ ID NO: 2, 4, 6 or 8 and comprises at least the Gln-Asp-Gly-Asn-Glu amino acid sequence, and a second binding domain capable of binding to EGFR, Her2 / neu or IgE of a being human and / or a primate other than a chimpanzee. |