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Biol Blood Marrow Transplant. 2018 Aug;24(8):1629-1642. doi: 10.1016/j.bbmt.2018.03.002. Epub 2018 Mar 13.

Second Hematopoietic Stem Cell Transplantation for Post-Transplantation Relapsed Acute Leukemia in Children: A Retrospective EBMT-PDWP Study.

Author information

1
Rina Zaizov Hematology-Oncology Division, Schneider Children's Medical Center of Israel, Petach Tikva, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. Electronic address: iyaniv@clalit.org.il.
2
Rina Zaizov Hematology-Oncology Division, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.
3
EBMT Paris study office/CEREST-TC, Department of Haematology, Saint Antoine Hospital, INSERM UMR 938, Paris, France.
4
Pediatric Hematology, Oncology and Stem Cell Transplantation, University of Regensburg, Regensburg, Germany.
5
Pediatric Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
6
Hematology and Transplantation Department, Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russian Federation.
7
Pediatric Onco-Hematology, Regina Margherita Children Hospital, Torino, Italy.
8
Division of Hematopoietic Stem Cell Transplantation, "Nino Jesus" Children Hospital, Madrid, Spain.
9
Department of Pediatric Hematology/Oncology and Bone Marrow Transplantation, Cape of Hope Wroclaw Medical University, Wroclaw, Poland.
10
Pediatric Hematology-Oncology, University Hospital Motol, Prague, Czech Republic.
11
Oncoematologia Pediatrica, Azienda Ospedaliera-Universita, Padova, Italy.
12
AustriaStem Cell Transplantation Unit, St. Anna Children's Hospital, Vienna, Austria.
13
Department for Children and Adolescents; Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt, Germany.

Abstract

Outcome data were collected from the European Society for Blood and Marrow Transplantation registry on 373 children from 120 centers with relapsed leukemia (214 with acute lymphoblastic leukemia [ALL] and 159 with acute myelogenous leukemia [AML]) who underwent second allogeneic hematopoietic stem cell transplantation (HSCT) between 2004 and 2013. Overall survival (OS) was 38% at 2 years and 29% at 5 years, and leukemia-free survival (LFS) was 30% at 2 years and 25% at 5 years. Median follow-up after second HSCT was 36.4 months in the ALL group and 50.2 months in the AML group. In the ALL group, OS was 43% at 2 years and 33% at 5 years, and LFS was 34% at 2 years and 31% at 5 years. In the AML group, OS was 32% at 2 years and 24% at 5 years, and LFS was 24% at 2 years and 17% at 5 years. The 2-year nonrelapse mortality (NRM) rate was 22% in the ALL group and 18% in the AML group. Favorable prognostic factors (P < .05) for OS and LFS included >12 months between transplantations and chronic graft-versus-host disease after the first HSCT (in both groups), complete response before the second HSCT (ALL group only), and age >12 years (AML group only). Findings were more consistent over time in the ALL group, with no significant differences between 2-year and 5-year rates of relapse, NRM, and LFS. Children with relapsed acute leukemias have a substantial likelihood of long-term survival following second HSCT. Given the many novel targeted and immunomodulation therapies currently under development, it is important to identify specific patient subpopulations that may benefit from a second HSCT compared with those better suited to new approaches.

KEYWORDS:

Relapse pediatric acute leukemia; Second HSCT; cGVHD

PMID:
29548831
DOI:
10.1016/j.bbmt.2018.03.002

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