Figure A Patient with WT1 overexpression at diagnosis who showed low levels of WT1 expression after SCT as well as negative FCM and complete chimerism during follow-up, and remaining in CR. Figure B: Patient with progressive increase of WT1 expression from day +48 untill reaching the highest levels in relapse on day +337, while chimerism remains complete and FCM results remain at the limit of delection in the same studied samples. FCM: flow cytometry, C: chimerism, Pos: positive, Neg: negative, CT: chemotherapy