multiepitopic vaccine-associated cancers with Her2 / neu

A fusion peptide comprising three epitopes noncontiguous B lymphocytes extracellular domain (ECD) of Her2 / neu, or derivatives thereof which retain their quality as epitope B lymphocytes, in which the three epitopes B lymphocytes noncontiguous are bonded directly together or linked via a sequence of non-natural peptide linker into a single polypeptide chain, and wherein the three epitopes noncontiguous B lymphocytes have the amino acid sequence set forth in SEQ ID nO: 12, SEQ ID nO 2 and SEQ ID No. 3.