- The leukemic fusion gene AML1-MDS1-EVI1 suppresses CEBPA in acute myeloid leukemia by activation of Calreticulin. Helbling, D., Mueller, B.U., Timchenko, N.A., Hagemeijer, A., Jotterand, M., Meyer-Monard, S., Lister, A., Rowley, J.D., Huegli, B., Fey, M.F., Pabst, T. Proc. Natl. Acad. Sci. U.S.A. (2004)