The present invention relates generally to the field of prophylaxis and therapy of metastatic cancer. In particular there is provided a protein； Ras Homology gene family, member C (RhoC) or peptide fragments thereof that are capable of eliciting anti-cancer immune responses. Specifically, the invention relates to use of RhoC or peptides derived thereof or RhoC specific T-cells for treatment of metastatic cancer. Hence, the invention in one aspect relates to RhoC specific T-cells adoptively transferred or induced in vivo by vaccination as a treatment of cancer. Also the use of RhoC and immunogenic peptide fragments hereof in cancer treatment, diagnosis and prognosis is provided.
