Abstract: The invention relates to a therapeutically effective truncated survivin and its therapeutic use as vaccine in a liposomal preparation, wherein the survivin fragment is preferably gluconoylated, and said liposomal preparation elicits in-vivo anti-tumor activity. The invention is directed, in more detail, to a cancer vaccine comprising a fragment of human survivin that is specifically effective in conjunction with an lipid adjuvant. The invention relates in more detail to a liposomal vaccine delivery system comprising an active truncated survivin molecule as tumor antigen and a chiral cationic lipid, for example R-DOTAP acting as adjuvant, which is part of the liposome preparation, wherein the liposomal drug delivery system is optimized with regard to its lipid and adjuvant components, physical or physicochemical parameters, and the final therapeutic efficacy of the released truncated survivin molecules.