French “real life” experience of clofarabine in children with refractory or relapsed acute lymphoblastic leukaemia

Experimental Hematology & Oncology

André Baruchel^1,18  Sylvie Chevret^1,11  Kristell Desseaux^1,11  Caroline Thomas^1,13  Alain Robert³  Dominique Plantaz⁵  Stéphane Ducassou^1,14  Brigitte Pautard⁹  Geneviève Margueritte^1,10  Patrick Boutard^1,15  Nicolas Sirvent^1,16  Claudine Schmitt⁴  Pierre Rohrlich⁶  Yves Bertrand^1,17  Arnaud Petit⁸  Isabelle Pellier¹  Gérard Michel^1,12  Brigitte Nelken²  Pascale Trioche⁷ 

[1] CHU, Angers, France;CHU, Lille, France;CHU, Toulouse, France;CHU, Nancy, France;CHU, Grenoble, France;CHU, Besançon, France;Department of Pediatric, APHP, Hôpital Antoine Béclère, Service de Pédiatrie, 157 rue de la porte de Trivaux, 92141 Clamart Cedex, France;APHP, Hôpital Armand Trousseau, Paris, France;CHU, Amiens, France;CHU, Montpellier, France;APHP, Hôpital Saint-Louis, Département de Biostatistique et Informatique Médicale, Paris et Université Paris Diderot, Paris, France;Hôpital La Timone, APHM, Marseille, France;CHU, Nantes, France;CHU, Bordeaux, France;CHU, Caen, France;CHU, Nice, France;CHU, Lyon, France;APHP, Hôpital Robert Debré, Hématologie et Immunologie Pédiatrique, Paris, et Université Paris Diderot, Paris, France

关键词: Clofarabine;    Leukaemia;    Relapsed;    Refractory;    Childhood leukaemia;    Acute lymphoblastic leukaemia;   

Others  :  821197
DOI  :  10.1186/2162-3619-1-39

 received in 2012-12-03, accepted in 2012-12-03,  发布年份 2012

【 摘 要 】

Background

Clofarabine alone or in combination with cyclophosphamide and etoposide has shown a good efficacy and a tolerable toxicity profile in previous studies of children with relapsed or refractory leukaemia. This report describes a retrospective study of 38 French patients who received clofarabine as a monotherapy or in combination for relapsed or refractory acute lymphoblastic leukaemia (ALL) outside of clinical trials after marketing authorization.

Methods

We retrospectively analysed data for 38 patients, up to 21 years old, attending 17 French centres. Thirty patients received clofarabine alone or in combination for a bone marrow relapse of acute lymphoblastic leukaemia (ALL) or refractory disease and eight patients for a high level of minimal residual disease (MRD). Survival and response durations were estimated by the Kaplan-Meier method.

Results

For the 30 patients who received clofarabine for a bone marrow relapse of ALL (number of relapse, 1-3; median, 1), the overall remission rate (ORR) was 37%: eight complete remission (CR) and three complete remission without platelet recovery (CRp). Ten of the 11 responding patients subsequently underwent haematopoietic stem cell transplantation (HSCT).

Only four of the eight patients who received clofarabine while in remission for a high level of MRD, showed a moderate improvement of MRD. Seven of these eight patients received HSCT and six of them were alive at the end of the study. One other patient was alive without receiving HSCT.

However, clofarabine treatment was associated with a high risk of infection and hepatotoxicity. Febrile neutropenia grade ≥ 3 was reported in 79% of patients and documented infections grade ≥ 3 occurred in nine patients (24%). Hepatotoxicity grade 3 was reported in nine patients (24%). We observed four deaths related to treatment.

Conclusion

In our experience, the efficacy of clofarabine is poorer than previously reported. Its toxicity is high and can be life threatening. Prospective studies on clofarabine used during earlier phases of the disease may help to define how best this new drug can be exploited for childhood and adolescent ALL.

【 授权许可】

   
2012 Trioche et al; licensee BioMed Central Ltd.

【 图 表 】

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