The product (recombinant human glutamic acid decarboxylase) is one of the major autoantigens (a protein that the immune system is reacting to) involved in the autoimmune process underlying T1DM. Recombinant human glutamic acid decarboxylase https://www.creativebiomart.net/therapeutic-proteins/p/195/recombinant-human-glutamic-acid-decarboxylase/