Volume 121, Issue 6 pp. 874-885

Decreased treatment failure in recipients of HLA-identical bone marrow or peripheral blood stem cell transplants with high CD34 cell doses

Olle Ringdén

Olle Ringdén

Huddinge University Hospital, Huddinge, Sweden,

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A. John Barrett

A. John Barrett

National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD,

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Mei-Jie Zhang

Mei-Jie Zhang

Graft-versus-host disease/graft-versus-leukaemia Working Committee of the International Bone Marrow Transplant Registry, Health Policy Institute, Medical College of Wisconsin, Milwaukee, WI,

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Fausto R. Loberiza

Fausto R. Loberiza

Graft-versus-host disease/graft-versus-leukaemia Working Committee of the International Bone Marrow Transplant Registry, Health Policy Institute, Medical College of Wisconsin, Milwaukee, WI,

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Brian J. Bolwell

Brian J. Bolwell

The Cleveland Clinic Foundation, Cleveland, OH,

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Mitchell S. Cairo

Mitchell S. Cairo

Columbia University, New York, NY,

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Robert Peter Gale

Robert Peter Gale

Center for Advanced Studies in Leukaemia, Los Angeles, CA, 6 St Jude Children's Research Hospital, Memphis, TN,

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Gregory A. Hale

Gregory A. Hale

Center for Advanced Studies in Leukaemia, Los Angeles, CA, 6 St Jude Children's Research Hospital, Memphis, TN,

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Mark R. Litzow

Mark R. Litzow

Mayo Clinic, Rochester, MN, USA,

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Rodrigo Martino

Rodrigo Martino

Hospital de la Santa Creu I Sant Pau, Barcelona, Spain,

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James A. Russell

James A. Russell

Tom Baker Cancer Centre, Calgary, Alta, Canada,

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Pierre Tiberghien

Pierre Tiberghien

Etablissement de Transfusion Sangine de Franche-Comte, Besancon, France, and

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Alvaro Urbano-Ispizua

Alvaro Urbano-Ispizua

Hospital Clinic, Barcelona, Spain

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Mary M. Horowitz

Mary M. Horowitz

Graft-versus-host disease/graft-versus-leukaemia Working Committee of the International Bone Marrow Transplant Registry, Health Policy Institute, Medical College of Wisconsin, Milwaukee, WI,

Reprint requests: Mary M. Horowitz, MD, MS, Statistical Center, International Bone Marrow Transplant Registry, Medical College of Wisconsin, 8701 Watertown Plank Road, PO Box 26509, Milwaukee, Wisconsin, 53226, USA. E-mail: [email protected]

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First published: 03 June 2003
Citations: 75
Olle Ringdén, MD, PhD, Huddinge University Hospital, Division of Clinical Immunology, F79, Huddinge, S-141–86, Sweden. E-mail: [email protected]/[email protected]

Abstract

Summary. We studied the association between CD34 cell dose and transplant outcomes in 359 bone marrow (BM) and 511 peripheral blood stem cell (PBSC) transplant recipients from human leucocyte antigen (HLA)-identical siblings, reported to the International Bone Marrow Transplant Registry (IBMTR). Transplants for leukaemia were performed between 1995 and 1998. Patients were divided into those receiving below or above the median CD34+ dose, for BM (3 × 106/kg) and PBSC (6 × 106/kg) grafts respectively. Cox proportional hazards regression was used to adjust for baseline patient-, disease- and transplant-related characteristics. Analysis of the BM recipients showed that high CD34 cell dose was associated with lower transplant-related mortality [relative risk (RR) = 0·60, P = 0·033] and treatment failure (inverse of leukaemia-free survival, RR = 0·69, P = 0·032). Among PBSC recipients, high CD34 dose was associated with faster recovery of neutrophils to > 0·5 × 109/l (RR = 1·38, P < 0·001) and platelets to > 20 × 109/l (RR = 1·34, P = 0·003), lower risk of relapse (RR = 0·62, P = 0·029) and treatment failure (RR = 0·74, P = 0·03). We conclude that higher CD34 cell doses decrease treatment failure in recipients of HLA-identical sibling BM and PBSC transplants.

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