Volume 63, Issue 2 pp. 270-275
Research Article

A Phase I Study of Clofarabine With Multiagent Chemotherapy in Childhood High Risk Relapse of Acute Lymphoblastic Leukemia (VANDEVOL Study of the French SFCE Acute Leukemia Committee)

Brigitte Nelken MD

Brigitte Nelken MD

Pediatric Hematology, CHRU Lille, Lille, France

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Helene Cave PhD

Helene Cave PhD

Department of Genetics, Robert-Debré Hospital, Paris, France

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Guy Leverger MD

Guy Leverger MD

Pediatric Haematology and Oncology Unit, Hopital Trousseau, Paris, France

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Claire Galambrun MD

Claire Galambrun MD

Pediatric Hematology Department, Hopital de La Timone, Marseille, France

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Genevieve Plat MD

Genevieve Plat MD

Department of Pediatric Onco-Hematology, CHU-Hopital Purpan, Toulouse, France

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Claudine Schmitt MD

Claudine Schmitt MD

Pediatric Hematology Oncology, CHU de Nancy, Vandoeuvre, France

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Caroline Thomas MD

Caroline Thomas MD

Hematology Department, CHU de Nantes, France

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Cécile Vérité MD

Cécile Vérité MD

Pediatric Oncology Unit, University Hospital, Bordeaux, France

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Benoit Brethon MD

Benoit Brethon MD

Pediatric Hematology, Hopital Robert Debre AP-HP, Paris, France

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Virginie Gandemer MD

Virginie Gandemer MD

Department of Pediatric Hematology/Oncology, CHU-Hopital Sud, Rennes, France

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Yves Bertrand MD

Yves Bertrand MD

Institute of Pediatric Hematology and Oncology, University Hospital, Lyon, France

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André Baruchel MD

André Baruchel MD

Department of Pediatric Hematology, Robert Debré Hospital, Paris, France

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Pierre Rohrlich MD

Corresponding Author

Pierre Rohrlich MD

Pediatric Hematology Unit, CHU Jean Minjoz Hospital, Besançon, France

Correspondence to: Pierre S. Rohrlich, Hemato-Oncologie Pédiatrique, Hôpital ARCHET 1, BP 3079, 06202 NICE CEDEX 3, France. E-mail: [email protected]

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First published: 16 September 2015
Citations: 10
Conflict of Interest: This study was supported in part by an investigator-initiated grant from Genzyme. Brigitte Nelken received a travel fund from Genzyme.

Abstract

Background

Current outcome of very early relapse of acute lymphoblastic leukemia (ALL) in children remains poor. As a single agent, clofarabine provided a response rate of 26% in childhood ALL second relapse and, in combination with cyclophosphamide and etoposide, a 44% complete remission and complete remission without platelet recovery (CR+CRp) rate. Further multi-drug combinations need to be investigated. We used the VANDA regimen as a template, cytarabine being replaced by clofarabine.

Patients and methods

A phase I study combining escalating doses of clofarabine (25% increments from 20 to 40 mg/m2/d) with fixed doses of mitoxantrone, etoposide, asparaginase, and dexamethasone was undertaken in children presenting with very early or second or post-transplant ALL relapse.

Results

Twenty patients were enrolled, 19 were evaluable. Four patients had previously been allografted. Dose-limiting toxicity (DLT) appeared at dose level 3 (32 mg/m2), one out of six patients experienced a liver DLT. At dose level 4 (40 mg/m2), four DLT occurred (two fungal infection and two liver DLT). The maximum tolerated dose (MTD) of clofarabine was thus determined to be 32 mg/m2. There was no toxic death. Eleven (57.9%) patients achieved a CR. Six patients proceeded to allogeneic stem cell transplantation.

Conclusion

Clofarabine MTD was 32 mg/m2/d in this combination which appeared feasible and effective in this population. Pediatr Blood Cancer © 2015 Wiley Periodicals, Inc.

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