PMID- 21135860 OWN - NLM STAT- MEDLINE DCOM- 20110513 LR - 20130304 IS - 1476-5551 (Electronic) IS - 0887-6924 (Linking) VI - 25 IP - 3 DP - 2011 Mar TI - Monitoring of WT1 expression in PB and CD34(+) donor chimerism of BM predicts early relapse in AML and MDS patients after hematopoietic cell transplantation with reduced-intensity conditioning. PG - 498-505 LID - 10.1038/leu.2010.283 [doi] AB - Relapse of malignant disease remains the major complication in patients with acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS) after hematopoietic cell transplantation (HCT) with reduced-intensity conditioning (RIC). In this study, we investigated the predictive value of disease-specific markers (DSMs), donor chimerism (DC) analysis of unsorted (UDC) or CD34(+) sorted cells and Wilms' tumor gene 1 (WT1) expression. Eighty-eight patients with AML or MDS were monitored after allogenic HCT following 2 Gy total-body irradiation with (n=84) or without (n=4) fludarabine 3 x 30 mg/m(2), followed by cyclosporin A and mycophenolate mofetil. DSMs were determined by fluorescence in situ hybridization (FISH) and WT1 expression by real-time polymerase chain reaction. Chimerism analysis was performed on unsorted or CD34(+) sorted cells, by FISH or short tandem repeat polymerase chain reaction. Twenty-one (24%) patients relapsed within 4 months after HCT. UDC, CD34(+) DC and WT1 expression were each significant predictors of relapse with sensitivities ranging from 53 to 79% and specificities of 82-91%. Relapse within 28 days was excluded almost entirely on the basis of WT1 expression combined with CD34(+) DC kinetics. Monitoring of WT1 expression and CD34(+) DC predict relapse of AML and MDS after RIC-HCT. FAU - Lange, T AU - Lange T AD - Department of Hematology, Oncology and Hemostaseology, University of Leipzig, Leipzig, Germany. langet@medizin.uni-leipzig.de FAU - Hubmann, M AU - Hubmann M FAU - Burkhardt, R AU - Burkhardt R FAU - Franke, G-N AU - Franke GN FAU - Cross, M AU - Cross M FAU - Scholz, M AU - Scholz M FAU - Leiblein, S AU - Leiblein S FAU - Al-Ali, H K AU - Al-Ali HK FAU - Edelmann, J AU - Edelmann J FAU - Thiery, J AU - Thiery J FAU - Niederwieser, D AU - Niederwieser D LA - eng PT - Journal Article DEP - 20101207 PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Antigens, CD34) SB - IM CIN - Expert Rev Mol Diagn. 2011 May;11(4):361-6. PMID: 21545254 MH - Adult MH - Aged MH - Antigens, CD34/*analysis MH - Blood Donors MH - Disease-Free Survival MH - Female MH - *Genes, Wilms Tumor MH - *Hematopoietic Stem Cell Transplantation MH - Humans MH - In Situ Hybridization, Fluorescence MH - Leukemia, Myeloid, Acute/*genetics/mortality/therapy MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/*genetics/mortality/therapy MH - Recurrence MH - Transplantation Chimera MH - *Transplantation Conditioning EDAT- 2010/12/08 06:00 MHDA- 2011/05/14 06:00 CRDT- 2010/12/08 06:00 PHST- 2010/12/08 06:00 [entrez] PHST- 2010/12/08 06:00 [pubmed] PHST- 2011/05/14 06:00 [medline] AID - leu2010283 [pii] AID - 10.1038/leu.2010.283 [doi] PST - ppublish SO - Leukemia. 2011 Mar;25(3):498-505. doi: 10.1038/leu.2010.283. Epub 2010 Dec 7.