Correction to: Leukemia (2006) 20, 1467–1473. doi:10.1038/sj.leu.2404284 It has been identified by the authors that there was an error in the author list. The following author was omitted in error. M Cavo, Institute of Hematology and Medical Oncology ‘Seràgnoli’, University of Bologna, Italy. The corrected list is mentioned here.