A self-adjuvanted chimeric recombinant protein priming vaccine, based on the self-adjuvanting KISIMA immunization platform, composed of three components: the 42 residue fragment Z12, a cell penetrating peptide (CPP) derived from the ZEBRA protein transduction domain, a toll-like receptor (TLR) peptide agonist as an adjuvant and a chimeric cargo, a multiple antigenic domain (MAD; MultiE), that contains an as of yet not disclosed amount of major histocompatibility class (MHC)-restricted peptides derived from as of yet undisclosed tumor-associated antigens (TAAs) that are specific for pancreatic cancer patients, with potential immunomodulating and antineoplastic activities. Upon administration of ATP150, the Z12 moiety targets, binds to and penetrates antigen-presenting cells (APCs), specifically dendritic cells (DCs) and promotes the loading of the epitopes into the DCs and transports antigenic cargoes into both endosomal and cytosolic compartments. Upon processing and antigen presentation by MHC II and I, the immune system is stimulated and activates specific CD4+ and CD8+ T-cells, respectively, against the multi-epitopes specific for pancreatic adenocarcinoma cells, thereby killing the tumor cells.