- Subjects who have received active immunotherapy, such as Antigen Loaded Dendritic Cells, are excluded (Phase I only). In Phase IIa, Subjects who have received an active immunotherapy based on any of the antigens used in this study either as DNA, RNA or a protein/peptide-based vaccines are excluded. Subjects who have received any other active immunotherapy, such as Antigen Loaded Dendritic Cells, within 6 months prior to study entry are also excluded.