Peptides and combination of peptides for use in immunotherapy against breast cancer and other cancers

A method of treating cancer in an HLA-A*02+ patient having a cancer overexpressing a DUSP4 polypeptide comprising the amino acid sequence of SEQ ID NO:

• 20 and presenting at its surface a peptide consisting of SEQ ID NO:
• 20 in the context of a complex with an MHC class I molecule, said method comprising administering to said patient an effective amount of activated antigen-specific CD8+ cytotoxic T cells to kill the cancer cells, wherein said activated antigen-specific CD8+ cytotoxic T cells are produced by contacting CD8+ cytotoxic T cells with an antigen presenting cell presenting at its surface a peptide consisting of SEQ ID NO:
• 20 in the context of a complex with an MHC class I molecule in vitro, wherein said cancer is selected from breast cancer, bile duct cancer, esophageal cancer, gallbladder cancer, gastric cancer, melanoma, non-Hodgkin lymphoma, non-small cell lung cancer, ovarian cancer, small cell lung cancer, urinary bladder cancer, and uterine cancer.