The present invention provides KOC1-derived
epitope peptides having the ability to induce cytotoxic T cells. The present invention further provides polynucleotides encoding the peptides,
antigen-presenting cells presenting the peptides, and cytotoxic T cells targeting the peptides, as well as methods of inducing the
antigen-presenting cells or CTLs. The present invention also provides compositions and pharmaceutical compositions containing them as an
active ingredient. Further, the present invention provides methods of treating and / or preventing
cancer, and / or preventing postoperative recurrence thereof, using the peptides, polynucleotides,
antigen-presenting cells, cytotoxic T cells or pharmaceutical compositions of the present invention. Methods of inducing an immune response against
cancer are also provided.