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Blood, 15 May 2008, Vol. 111, No. 10, pp. 5252-5255. Prepublished online as a Blood First Edition Paper on March 31, 2008; DOI 10.1182/blood-2007-10-118141.
Submitted October 29, 2007
Section of Experimental Haematology & Haemopoietic Stem Cells, University of Glasgow, Glasgow, United Kingdom * Corresponding author; email: tlh1g{at}clinmed.gla.ac.uk.
Patients with newly diagnosed chronic phase chronic myeloid leukaemia (CML) were treated with imatinib mesylate (IM), for 6-12 months to establish disease control, prior to reduced intensity stem cell transplantation (RISCT). Escalating doses of donor lymphocyte infusions (DLI) were given from 6 months post-transplant to eradicate residual disease. 18 patients entered the study and 15 received RISCT (median follow up 31 months). RISCT was well tolerated with rapid engraftment, short in-patient stays and few readmissions. Viral reactivation was common, although extensive graft versus host disease (GvHD) occurred infrequently. DLI were given as part of the RISCT protocol in 13/15 patients. BCR-ABL transcripts continue to decrease post-RISCT and 8 (53%) patients have achieved sustained undetectable levels. All patients are currently off IM. Although IM is now established as first-line therapy for chronic phase CML, this protocol is a safe, well tolerated and effective strategy in these patients. This study is registered at http://www.controlled-trials.com as ISRCTN86187144.
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