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Blood, 15 February 2007, Vol. 109, No. 4, pp. 1408-1413.
Prepublished online as a Blood First Edition Paper on October 24, 2006; DOI 10.1182/blood-2006-03-011908.
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CLINICAL TRIALS AND OBSERVATIONS
Imatinib combined with induction or consolidation chemotherapy in patients with de novo Philadelphia chromosomepositive acute lymphoblastic leukemia: results of the GRAAPH-2003 study
Adrienne de Labarthe1,
Philippe Rousselot2,
Françoise Huguet-Rigal3,
Eric Delabesse4,
Francis Witz5,
Sébastien Maury6,
Delphine Réa1,
Jean-Michel Cayuela1,
Marie-Christine Vekemans7,
Oumedaly Reman8,
Agnès Buzyn4,
Arnaud Pigneux9,
Martine Escoffre10,
Yves Chalandon11,
Elizabeth MacIntyre4,
Véronique Lhéritier12,
Jean-Paul Vernant13,
Xavier Thomas12,
Norbert Ifrah14,
Hervé Dombret, for the Group for Research on Adult Acute Lymphoblastic Leukemia (GRAALL)1
1 Department of Hematology, Hôpital Saint-Louis, Paris, France;
2 Department of Hematology, Hôpital André Mignot, Versailles, France;
3 Department of Hematology, Hôpital Purpan, Toulouse, France;
4 Department of Hematology, Hôpital Necker, Paris, France;
5 Department of Hematology, Hôpital de Brabois, Nancy, France;
6 Department of Hematology, Hôpital Henri Mondor, Créteil, France;
7 Department of Hematology, Cliniques Universitaires Saint-Luc, Bruxelles, Belgium;
8 Department of Hematology, Centre Hospitalier Universitaire, Caen, France;
9 Department of Hematology, Hôpital Haut-Lévèque, Pessac, France;
10 Department of Hematology, Centre Hospitalier Universitaire, Rennes, France;
11 Department of Hematology, Hôpital Universitaire, Genève, Switzerland;
12 Department of Hematology, Hôpital Edouard Herriot, Lyon, France;
13 Department of Hematology, Hôpital Pitié-Salpêtrière, Paris, France;
14 Department of Hematology, Centre Hospitalier Universitaire, Angers, France
The combination of imatinib with chemotherapy has been recently reported as very promising in patients with Philadelphia chromosomepositive (Ph+) acute lymphoblastic leukemia (ALL). During 2004 and 2005, 45 patients with newly diagnosed Ph+ ALL were treated in the Group for Research on Adult Acute Lymphoblastic Leukemia (GRAAPH) 2003 study, in which imatinib was started with HAM (mitoxantrone with intermediate-dose cytarabine) consolidation in good early responders (corticosensitive and chemosensitive ALL) or earlier during the induction course in combination with dexamethasone and vincristine in poor early responders (corticoresistant and/or chemoresistant ALL). Imatinib was then continuously administered until stem cell transplantation (SCT). Overall, complete remission (CR) and BCR-ABL real-time quantitative polymerase chain reaction (RQ-PCR) negativity rates were 96% and 29%, respectively. All of the 22 CR patients (100%) with a donor actually received allogeneic SCT in first CR. At 18 months, the estimated cumulative incidence of relapse, disease-free survival, and overall survival were 30%, 51%, and 65%, respectively. These 3 end points compared very favorably with results obtained in the pre-imatinib LALA-94 trial. This study confirms the value of the combined approach and encourages prospective trials to define the optimal chemotherapy that has to be combined with imatinib and to carefully reevaluate the place of allogeneic SCT in this new context.

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