The present invention relates to peptides, nucleic acids and cells for use in immunotherapeutic methods. In particular, the present invention relates to the immunotherapy of cancer. The present invention furthermore relates to tumor-associated T-helper cell peptide epitopes, alone or in combination with other tumor-associated peptides that serve as active pharmaceutical ingredients of vaccine compositions which stimulate anti-tumor immune responses. The present invention relates to novel peptide sequences and their variants derived from HLA class I and class II molecules of human tumor cells which can be used in vaccine compositions for eliciting anti-tumor immune responses.
