Marker Therapeutics, Inc., formerly TapImmune Inc., is an immuno-oncology company. The Company specializes in the development of peptide and gene-based immunotherapeutics and vaccines for the treatment of cancer. It is engaged in developing vaccines that target candidate breast cancers, colorectal cancers, ovarian cancers and non-small cell lung cancers. It combines a set of licensed technologies, including peptide antigen technologies and deoxyribonucleic acid (DNA) expression technologies that improve the ability of the cellular immune system to recognize and destroy diseased cells. Its core technology platforms include TPIV 100/110, a vaccine for the treatment of Human Epidermal Growth Factor receptor 2 (HER2)/neu+ breast cancer that over-expresses HER2/neu; TPIV 200, a vaccine for treating breast and ovarian cancers that over-express Folate Receptor Alpha, and DNA expression vaccine technology (Polystart) for further treating various cancers or infectious disease.