[1] Univ Freiburg, Dept Hematol Oncol, D-79106 Freiburg, Germany
[2] Novartis Res Fdn, Genom Inst, Dept Pharmacol, San Diego, CA 92121 USA
[3] Novartis Res Fdn, Genom Inst, Dept Med Chem, San Diego, CA 92121 USA
[4] Novartis Inst BioMed Res, CH-4002 Basel, Switzerland
[5] Novartis Inst BioMed Res, Cambridge, MA 02139 USA