Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2003-5-16
pubmed:abstractText
Allogeneic stem cell transplantation (SCT) using reduced-intensity conditioning (RIC) has potential to be a promising treatment of aggressive chronic lymphocytic leukemia (CLL). Since available clinical data obtained with this novel approach are very limited, we have performed a survey on this issue. Data of 77 patients were collected from 29 European Group for Blood and Marrow Transplantation centers. Median age was 54 (30-66) years, and the median number of previous chemotherapy regimens was 3 (0-8). HLA-identical sibling donors were used in 81% of the cases. Moderate conditioning regimens (mainly low-dose total body irradiation (TBI) or fludarabine-cyclophosphamide combinations) were administered to 56% of the patients, whereas the remainder received more intense conditioning consisting of fludarabine-busulfan or high-dose melphalan combinations. In 40% of the patients, in vivo T-cell depletion (TCD) with anti-thymocyte globulin or CAMPATH-1H was part of the conditioning regimen. Cumulative treatment-related mortality (TRM) was 18% (95% CI 9; 27) after 12 months. Complete chimerism as well as best response was not achieved immediately post-transplant but took a median of 3 months to develop. The 2-year probability of relapse was 31% (95% CI 18; 44), with no event occurring later than 12 months post transplant in the absence of TCD. With one exception, relapses were not observed after onset of chronic graft-versus-host disease. Event-free and overall survival at 24 months were 56% (95% CI 43; 69) and 72% (95% CI 61; 83), respectively. The median follow-up was 18 (1-44) months. Donor lymphocyte infusions or secondary transplants were performed in 19 patients with insufficient disease control and/or incomplete donor chimerism post-transplant, leading to a response in seven patients (37%). Preliminary multivariate analysis identified less than PR at transplant (hazard ratio (HR) 3.5; P&<0.01) and alternative donor (HR 3.1; P=0.02) as significant risk factors for relapse, whereas number of previous regimens >2 (HR 5.4; P=0.03), TBI (HR 2.5; P=0.05), and alternative donor (HR 2.3; P=0.08) were risk factors for survival. We conclude that RIC might favorably influence the outcome after allogeneic SCT for CLL by reducing TRM while preserving graft-versus leukemia activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0887-6924
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
841-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed-meshheading:12750695-Adult, pubmed-meshheading:12750695-Aged, pubmed-meshheading:12750695-Antineoplastic Combined Chemotherapy Protocols, pubmed-meshheading:12750695-Busulfan, pubmed-meshheading:12750695-Cohort Studies, pubmed-meshheading:12750695-Disease-Free Survival, pubmed-meshheading:12750695-Female, pubmed-meshheading:12750695-Graft vs Host Disease, pubmed-meshheading:12750695-Hematopoietic Stem Cell Transplantation, pubmed-meshheading:12750695-Humans, pubmed-meshheading:12750695-Leukemia, Lymphocytic, Chronic, B-Cell, pubmed-meshheading:12750695-Lymphocyte Depletion, pubmed-meshheading:12750695-Male, pubmed-meshheading:12750695-Middle Aged, pubmed-meshheading:12750695-Neoplasm Recurrence, Local, pubmed-meshheading:12750695-Neoplasm Staging, pubmed-meshheading:12750695-Remission Induction, pubmed-meshheading:12750695-Retrospective Studies, pubmed-meshheading:12750695-Survival Rate, pubmed-meshheading:12750695-Transplantation, Homologous, pubmed-meshheading:12750695-Transplantation Conditioning, pubmed-meshheading:12750695-Treatment Outcome, pubmed-meshheading:12750695-Vidarabine, pubmed-meshheading:12750695-Whole-Body Irradiation
pubmed:year
2003
pubmed:articleTitle
Treatment-related mortality and graft-versus-leukemia activity after allogeneic stem cell transplantation for chronic lymphocytic leukemia using intensity-reduced conditioning.
pubmed:affiliation
Department of Hematology, Allgemeines Krankenhaus St Georg, Hamburg, Germany.
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't, Multicenter Study