Management of refractory acute lymphoblastic leukemia in children and adolescents: remission re-induction followed by allogeneic hematopoietic stem cell transplantation

E.V. Semenova, N.V. Stancheva, S.N. Bondarenko, V.N. Vavilov, D.A. Bagge, O.V. Paina, S.V. Razumova, A.S. Borovkova, T.A. Bykova, A.A. Raths, L.S. Zuborovskaya, B.V. Afanasyev

R.M. Gorbacheva Memorial Institute of Children Hematology and Transplantation, Pavlov State Medical University, Saint-Petersburg, Russian Federation


Objective: to analyze efficacy of fludarabine- and nelarabine-containing chemotherapy  before  allogeneic hematopoietic stem cell transplantation (allo-HSCT) in children and adolescents with relapsed and refractory acute lymphoblastic leukemia (ALL) .

Patients and methods: Thirty three patients (pts) with relapsed and refractory ALL from 1 till 21 y.o. (median age was 11,5 y.o.) were treated by fludarabine- (n=23) and nelarabine- (n=10) containing therapy.  Subsequently 24 patients underwent allo-HSCT.  

Results: CR was achieved in 11(48%) of 23 pts after FLAG±IDA and 7 (70%) of 10 pts after nelarabine-containg regimens. Duration of remissions were 1-18 months (median was 4,9 months).

Overall 3-year survival (OS) after allo-HSCT in remission was 58%, OS  after allo-HSCT in relapse was 8%, OS without allo-HSCT was 0%.

Conclusion: Fludarabine- and nelarabine-containing therapy can be used as bridge to allo-HSCT in children and adolescents with poor-prognosis ALL.

Кeywords: fludarabine, nelarabine, allo-HSCT, relapsed or refractory acute lymphoblastic leukemia, children and adolescents

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  1. Schrappe M., Reiter A., Ludwig W.D. et al. Improved outcome in childhood acute Lymphoblastic leukemia despite reduced use of antracyclines and cranial radiotherapy: results of trial ALL-BFM 90. Blood 2000; 95(11): 3310–22.
  2. Silverman L.B., Gelber R.D., Dalton V.K. et al. Improved outcome for children with acute lymphoblastic leukemia: results of Dana-Farber Consortium Protocol 91-01. Blood 2001; 97(5): 1211–8.
  3. Pui C.-H., Schrappe M., Ribeiro R.C., Niemeyer C.M. Childhood and adolescent lymphoid and myeloid leukemia. Hematology 2004; 84: 124–32.
  4. Pui C.H., Evans W.E. Treatment of acute lymphoblastic leukemia. N. Engl. J. Med. 2006; 354(2): 166–78.
  5. Chessells J.M., Veys P., Kempski H. et al. Long-term follow-up of relapsed childhood acute lymphoblastic leukaemia. Br. J. Haematol. 2003; 123: 396–405.
  6. Nguyen K., Devidas M., Cheng S.C. et al. Factors influencing survival after relapse from acute lymphoblastic leukemia: A Children’s Oncology Group study. Leukemia 2008; 22: 2142–50.
  7. Афанасьев Б.В., Зубаровская Л.С. Трансплантация гемопоэтических стволовых клеток крови. Детская онкология: Руководство. СПб., 2002: 90–108. [Afanas’ev B.V., Zubarovskaya L.S. Transplantatsiya gemopoeticheskikh stvolovykh kletok krovi. Detskaya onkologiya: Rukovodstvo (Hematopoietic stem cell transplantation. Pediatric oncology. Manual). , 2002: 90–108.]
  8. Румянцев А.Г., Масчан А.А. Трансплантация гемопоэтических стволовых клеток у детей: Руководство для врачей. М., 2003. [Rumyantsev A.G., Maschan A.A. Transplantatsiya gemopoeticheskikh stvolovykh kletok u detei: Rukovodstvo dlya vrachei (Hematopoietic stem cell transplantation in children. Manual for medical practitioners)., 2003.]
  9. McCarthy A.J., Pitcher L.A., Hann I.M., Oakhill A. FLAG (fludarabine, high-dose cytarabine, and G-CSF) for refractory and high-risk relapsed acute leukemia in children. Med. Pediatr. Oncol. 1999; 32(6): 411–5.
  10. Yang S.W. et al. Dual mode of inhibition of purified DNA ligase from human cells by 9-β-D-arabinosyl-2-fluoroadenine triphosphate. J. Biol. Chem. 1992; 267: 2345–9.
  11. Ross S.P. et al. Fludarabine: a review of its pharmacological properties and therapeutic potential in malignancy. Drug 1993; 45: 737–59.
  12. Gandhi V. et al. Combination of fludarabine and arabinosyl-cytosine for the treatment of chronic lymphocytic leukemia: clinical efficacy and modulation of arabinosyl-cytosine pharmacology. Cancer Chem. Pharmacol. 1994; 34: 30–6.
  13. Tavil B., Aytac S., Balci Y.I. et al. Fludarabine, cytarabine, granulocyte colony-stimulating factor, and idarubicin (FLAG-IDA) for the treatment of children with poor-prognosis acute leukemia: the Hacettepe experience. Hematol. Oncol. 2010; 27(7): 517–28.
  14. Quarello P., Berger M., Rivetti E. et al. FLAG-liposomal doxorubicin (Myocet) regimen for refractory or relapsed acute leukemia pediatric patients. J. Pediatr. Hematol. Oncol. 2012; 34(3): 208–16.
  15. Berg S.L., Blaney S.M., Devidas M. et al. Phase II study of Nelarabine in children and young adults with refractory T-cell malignancies: a report from the Children’s Oncology Group. J. Clin. Oncol. 2005; 23(15): 3376–82.
  16. Commander L.A., Seif A.E., Insogna I.G., Susan R. Rheingold. Salvage therapy with nalarabine, etoposide and cyclophosphamide in relapsed/refractory paediatric T-cell lymphoblastic leukaemia and lymphoma. J. Haem. 2010; 150: 345–51.
  17. Trotti A., Colevas A.D. et al. CTCAE v3.0: development of a comprehensive grading system for the adverse effects of cancer treatment. Radiat. O 2007; 13: 176–81.