- Human desmocollin 1 (Dsc1) is an autoantigen for the subcorneal pustular dermatosis type of IgA pemphigus. Hashimoto, T., Kiyokawa, C., Mori, O., Miyasato, M., Chidgey, M.A., Garrod, D.R., Kobayashi, Y., Komori, K., Ishii, K., Amagai, M., Nishikawa, T. J. Invest. Dermatol. (1997)