The invention provides a peptide comprising a human cytolytic T lymphocyte (CTL) epitope from the human tumor-associated antigen (TAA) New Gene Expressed in Prostate (NGEP), which can be used in vaccine prevention or therapy of prostate cancer, as well as a nucleic acid encoding the peptide, a vector comprising the nucleic acid, a cell comprising the peptide, nucleic acid, or vector, and compositions thereof.
