Volume 20, Issue 5 pp. 667-674
Original Article

Improved overall survival for pediatric patients undergoing allogeneic hematopoietic stem cell transplantation – A comparison of the last two decades

Petter Svenberg

Corresponding Author

Petter Svenberg

Oncology/Coagulation Section, Karolinska University Hospital, Stockholm, Sweden

Petter Svenberg, MD, Department of Pediatric Oncology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm 171 76, Sweden

Tel.: +46851770182

Fax: +46851773283

E-mail: [email protected]

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Mats Remberger

Mats Remberger

Department of Oncology/Pathology, Karolinska Institute, Stockholm, Sweden

Centre for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, Stockholm, Sweden

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Mehmet Uzunel

Mehmet Uzunel

Division of Clinical Immunology and Transfusion Medicine, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden

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Jonas Mattsson

Jonas Mattsson

Department of Oncology/Pathology, Karolinska Institute, Stockholm, Sweden

Centre for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, Stockholm, Sweden

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Britt Gustafsson

Britt Gustafsson

Centre for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, Stockholm, Sweden

Division of Pediatrics, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden

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Gustav Fjaertoft

Gustav Fjaertoft

Centre for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, Stockholm, Sweden

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Mikael Sundin

Mikael Sundin

Division of Pediatrics, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden

Hematology/Immunology Section, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden

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Jacek Winiarski

Jacek Winiarski

Division of Pediatrics, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden

Hematology/Immunology Section, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden

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Olle Ringdén

Olle Ringdén

Division of Clinical Immunology and Transfusion Medicine, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden

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First published: 01 June 2016
Citations: 27

Abstract

Pediatric protocols for allogeneic hematopoietic SCT have been altered during the last two decades. To compare the outcomes in children (<18 yr old), who underwent SCT at our center during 1992–2002 (P1) and 2003–2013 (P2). We retrospectively analyzed 188 patients in P1 and 201 patients in P2. The most significant protocol changes during P2 compared with P1 were a decrease in MAC protocols, particularly those containing TBI, an increase in RIC protocols, and altered GvHD prophylaxis. In addition, P2 had more patients with nonmalignant diagnoses (p = 0.002), more mismatched (MM) donors (p = 0.01), and more umbilical CB grafts (p = 0.03). Mesenchymal or DSCs were used for severe acute GvHD during P2. Three-yr OS in P1 was 58%, and in P2, it was 78% (p < 0.001). Improved OS was seen in both malignant disorders (51% vs. 68%; p = 0.05) and nonmalignant disorders (77% vs. 87%; p = 0.04). Multivariate analysis showed that SCT during P2 was associated with reduced mortality (HR = 0.57; p = 0.005), reduced TRM (HR = 0.57; p = 0.03), unchanged relapse rate, similar rate of GF, less chronic GvHD (HR = 0.49; p = 0.01), and more acute GvHD (HR = 1.77, p = 0.007). During recent years, OS has improved at our center, possibly reflecting the introduction of less toxic conditioning regimens and a number of other methodological developments in SCT.

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