Opexa Therapeutics, Inc. (Opexa) is a biopharmaceutical company. The Company is engaged in the development of a personalized immunotherapy with the potential to treat various illnesses, including multiple sclerosis (MS), as well as other autoimmune diseases, such as neuromyelitis optica (NMO). These therapies are based on its T-cell technology. The Company's product candidates include Tcelna and OPX-212. Tcelna is an autologous T-cell immunotherapy that is being developed for the treatment of secondary progressive MS (SPMS) and is tailored to each patient's immune response profile to myelin. Tcelna is designed to reduce the number and/or functional activity of specific subsets of myelin-reactive T-cells (MRTCs) known to attack myelin. Tcelna is manufactured using its method for the production of an autologous T-cell product. In addition to the ongoing clinical development of Tcelna, the Company is developing OPX-212 as an autologous T-cell immunotherapy for the treatment of NMO.