- The mouse pale ear (ep) mutation is the homologue of human Hermansky-Pudlak syndrome. Gardner, J.M., Wildenberg, S.C., Keiper, N.M., Novak, E.K., Rusiniak, M.E., Swank, R.T., Puri, N., Finger, J.N., Hagiwara, N., Lehman, A.L., Gales, T.L., Bayer, M.E., King, R.A., Brilliant, M.H. Proc. Natl. Acad. Sci. U.S.A. (1997)