CEL-SCI Corporation, a clinical-stage biotechnology company, engages in the research and development to treat cancer and other diseases by using the immune system in the United States. The company's lead immunotherapy is Multikine, which has completed Phase III clinical trials for the potential treatment of certain head and neck cancers. It is also developing Ligand Epitope Antigen Presentation System (LEAPS) technology, a patented T-cell modulation process that stimulates the human immune system to fight bacterial, viral, parasitic infections, autoimmune conditions, allergies, transplantation rejections, and cancer, as well as to potentially treat rheumatoid arthritis. In addition, the company's LEAP product candidates include CEL-2000; CEL-4000; and CEL-5000 that are in preclinical trials for potential rheumatoid arthritis therapeutic treatments. CEL-SCI Corporation was incorporated in 1983 and is headquartered in Vienna, Virginia.