- Defects in the cappuccino (cno) gene on mouse chromosome 5 and human 4p cause Hermansky-Pudlak syndrome by an AP-3-independent mechanism. Gwynn, B., Ciciotte, S.L., Hunter, S.J., Washburn, L.L., Smith, R.S., Andersen, S.G., Swank, R.T., Dell'Angelica, E.C., Bonifacino, J.S., Eicher, E.M., Peters, L.L. Blood (2000)