Stimuvax®, otherwise called BLP25 liposome vaccine (Merck Serono/Oncothyreon) is a liposome-encapsulated peptide vaccine consisting of a synthetic peptide derived from the mucin 1 (MUC-1) antigen that is overexpressed on the cell surface of many epithelial tumor cells, as well as on the surface of some B-cell lymphoma and multiple myeloma cells [29]. Here, MUC1 is linked to plasma cell myeloma.